UM0276 User manual
STFPC311 LED Evaluation board hardware description and user manual
Introduction
The STFPC311-LED is an evaluation board designed for the quick and easy evaluation of the STFPC311 Vacuum Fluorescent Display Controller used to drive LED (Light Emitting Diode) displays. Its key features include:
One 4-digit, 7-segment LED display Fifteen programmable front panel keys Two switches Four LEDs Two LEDs to display Standby and Mute status respectively One InfraRed Connector for remote control Parallel Port for communication with PC External power supply STFPC311 graphical user interface (GUI) that simulates communication between the VFD controller and a microcontroller One STFPC311-LED Evaluation board STFPC311 Evaluation software program (GUI) User manual
The Evaluation board package includes:
STFPC311-LED Evaluation board v1.0
April 2007
Rev 2
1/25
www.st.com
Contents
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Contents
1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 1.2 Installing the evaluation software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Connecting the evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Using the evaluation software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 2.2 WDT and Standby tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Command tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 Display configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Write LED ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Read switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Setting the Read frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Read RC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Read front panel keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 2.4
Write Display Memory tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 RC and Hotkeys Config tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4.1 2.4.2 2.4.3 2.4.4 2.4.5 RC protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 RC address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 RC and hotkey configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Front panel hotkeys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Front panel hotkey configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5
RTC tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
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List of figures
List of figures
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. STFPC311-LED Evaluation board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Parallel port configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 READY HIGH selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Display configuration (ON position) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Write LED Ports and Read Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Read frequency selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 LED data display selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Remote control and hotkey configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Setting the alarm using the RTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Reading the RC5 Standby data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 RC5-based remote control Standby configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 RC5 protocol Standby key waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Reading the RC6 Standby data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 RC6-based remote control Standby configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Standby Key for RC6 protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Reading the NEC remote control key1 data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 NEC-based remote control Key1 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 NEC Protocol KEY1 code waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Keys in Bank1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Keys in Bank2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Keys in Bank3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Schematic STFPC311- LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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Getting started
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1
Getting started
To start evaluating the STFPC311 Vacuum Fluorescent Display Controller, you must:
Install the Evaluation software. Connect the Evaluation Board to the PC running the Evaluation software. Connect an external power supply to the Evaluation Board. STFPC311-LED Evaluation board layout
Figure 1.
Parallel Cable LEDs Switches
Front Panel Keys IR Sensor VFD Controller LED Display Power Supply
1.1
Installing the evaluation software
A ZIP file, "STFPC311_GUI.ZIP", contains the Evaluation software. This software runs on all Windows operating system platforms. 1. 2. Unzip this file to extract the STFPC311_GUI.exe setup file on the host PC system. Double-click on the setup file and follow the instructions displayed on the PC screen to install the software GUI.
Note:
Ensure that the io.dll file included in the ZIP file is extracted to the same folder as the EXE file.
1.2
Connecting the evaluation board
The Evaluation Board requires an external power supply (supply not included). An appropriate power supply must have two connectors: one for the 3.3 VDC (reference) supply and the other for the ground provided on the board (Figure 1). 1. 2. Connect the parallel cable to the host system. Plug the external power supply into the board.
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2
Using the evaluation software
1. 2. 3. 4. Star t the STFPC311_GUI evaluation software application. Configure the parallel port; open the Settings tab from the main menu and select LPTx Addr... and enter the correct value as shown in Figure 2. (Default setting is 0378.) Switch ON the STFPC311 Evaluation Board. Within 10 seconds after power-on, select the Ready High radio button located on the WDT and Standby tab (Figure 3). The Standby and Mute LEDs on the board will light up.
Note:
Each time the GUI is invoked, the Ready High radio button is selected by default. Figure 2. Parallel port configuration
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2.1
WDT and Standby tab
The WDT and Standby tab enables the user to configure the Watchdog Timeout and Standby control settings. In the Watchdog Timer pane, use the Timer Setting pull-down menu to specify the Watchdog Timer timeout period. Select OFF or a timeout period from 1 to 15 seconds. The default value is 10 seconds. Press Reset Timer to reset the Watchdog Timer counter. The Watchdog Action Setting pane defines the action that takes place when the Watchdog Timeout expires. Select No Action to do nothing or Issue Standby to switch the VFD controller into Standby mode. The STFPC311 continuously monitors the status of the READY pin. Once the READY pin goes low (Mute LED is OFF on the board), and within the preset timeout period (1s to 15s) it is not asserted high, the STFPC311 sets the STBY pin to a logic high (STBY LED is OFF on the board). Figure 3. READY HIGH selection
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Using the evaluation software
2.2
2.2.1
Command tab
Display configuration
Select the appropriate dimming settings for the LED display. The Display Mode (digits and segments) is pre-selected. Figure 4. Display configuration (ON position)
2.2.2
Write LED ports
The Write LED Ports pane enables the user to switch ON or OFF the evaluation board LEDs. Select the required check boxes (LED1 to LED4) and click Write to switch ON the corresponding LEDs as shown in the example in Figure 5.
2.2.3
Read switches
The Read Switches button enables the user to read the status of the STFPC311 evaluation board switches. Click Read to display the status of switches SW1 and SW2. A green background indicates that the corresponding switch is closed (ON) as shown in Figure 5.
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Using the evaluation software Figure 5. Write LED Ports and Read Switches
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2.2.4
Setting the Read frequency
The user can select the time period after which the status of the Front Panel Keys is read. The same option is also available for RC Data (Figure 6). Select the correct frequency: Once (default) or every 100ms, 250ms, 500ms or 1000ms. Figure 6. Read frequency selection
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2.2.5
Read RC Data
The decoded IR commands are sent to the main processor through the serial interface by sending 3 bytes of data. The Read RC Data pane represents the 24 bits of these 3-byte data frames.
2.2.6
Read front panel keys
The Read Front Panel Keys pane enables the user to read the status when the keys on the evaluation board are pressed. Click the Read Frequency to display the status of keys KS1 to KS15. A green background indicates that the corresponding key is pressed.
2.3
Write Display Memory tab
The Write Display Memory tab (Figure 7) enables the user to select the data displayed on the LED display. From the Set Bits drop-down menu, select the data bit-map to be displayed: Reset, Play, CH2 or 15:30. Click Send to write the data to the display memory. Click Toggle Bits to switch bit values in the Display Memory pane, and then click Send to write the data to the display memory. Also, the bit-map can be configured by double-clicking the bits in the Display Memory area. Click Send to write the data to the display memory. Figure 7. LED data display selection
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2.4
RC and Hotkeys Config tab
The RC and Hotkeys Config tab is used to configure the remote control and hotkeys as shown in the example given in Figure 8. Figure 8. Remote control and hotkey configuration
2.4.1
RC protocol
The STFPC311 supports three Remote Control (RC) protocols, RC5, RC6, and NEC. (For more information, see Appendix A on page 13.) Select the appropriate protocol using radio buttons in the Remote Control Protocol pane. The RC5 and RC6 protocols use bi-phase modulation Manchester encoding where logic transitions represent a logic high or logic low signal. The NEC protocol uses pulse distance bit encoding. A logic `1' takes 2.25 ms to transmit, while a logic `0' takes only 1.12 ms. A message starts with a 9ms Auto Gain Control (AGC) burst, which is followed by a 4.5 ms space, which is then followed by the Address and Command. The Address and Command are transmitted twice. The second time, all the bits are inverted and are used to verify the received message.
2.4.2
RC address
The address of the Remote Control unit that will communicate with the STFPC311 must be specified. Enter the 8 bit values of the protocol address of the Remote Control unit in the text box of the RC Address pane. For example, the address for the RC5 protocol is 0x00. Table 1 lists the RC protocol address and Standby hotkey configuration values. Double-click on each of the bits to change its value.
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2.4.3
RC and hotkey configuration
The STFPC311 GUI supports 24 Front Panel Keys, 8 of which may be programmed as RC hotkeys using check boxes in the RC Hotkeys Configuration pane as shown in Figure 8. For example, the RC hotkey configuration for Standby mode in RC5 protocol is 0000 1100 (0Ch). Table 1. RC protocol address and STANDBY RC hotkey
Address 0000 0000 (00h) 0010 0111 (27h) 0000 0010 (02h) RC hotkey Configuration for STANDBY 0000 1100 (0Ch) 0000 1100 (0Ch) 1000 1000 (88h)
Protocol RC5 RC6 NEC
2.4.4
Front panel hotkeys
The Front Panel Hotkeys pane is used to configure hotkeys. Select the correct bank (Bank1, Bank2 or Bank3) and double-click on each of the bits to change its value. For more information, see Appendix B on page 21.
2.4.5
Front panel hotkey configuration
The STFPC311 GUI supports 24 Front Panel Keys, 8 of which may be programmed as RC hotkeys using the RC Hotkey Configuration pane. The Front Panel Hotkeys pane (Figure 8) shows the settings used to configure the KS15 key as a hotkey. For more information, see the corresponding Hotkey Configuration section in Appendix A on page 13.
Example of Hotkey use:
1. To put the VFD controller in Standby mode, select the Ready Low option in the Standby Control pane on the WDT and Standby tab. When the VFD controller is in Standby mode, there are two ways to wake-up the controller: a) b) 2. Press the remote control Standby key, or Press the Front Panel hotkey
After the controller wakes up from Standby mode, select the Ready High option in the Standby Control pane on the WDT and Standby tab within the timeout period, otherwise the controller switches into Standby mode again.
For more information about how commands are sent, see Section 2.2: Command tab.
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2.5
RTC tab
The Real-Time Clock (RTC) tab (Figure 9) is used to configure the current time and date for the RTC on the evaluation board. It is also used to configure an Alarm function of the RTC used to check the interrupt status. The Time Settings pane displays the current system date and time and provides an interface for modifying these values. Click Send to store updated values in the RTC registers. In the Alarm Settings pane, set the date and time to trigger the RTC interrupt. Select Enable Alarm to enable the interrupt. Use the Repeat Mode drop-down menu to select the interrupt repetition rate: once per second, minute, hour, day, month or year. Click Send to store the configuration in the RTC registers. The user can specify the frequency at which the RTC interrupt status is to be read using the Read Frequency pull-down menu in the Status pane. Click Clear IRQ to clear the interrupt.
Note:
The color of IRQ label changes to green when the RTC interrupt is generated. If the Read Date/Time check box is selected, the Time Settings pane displays the system time. Figure 9. Setting the alarm using the RTC
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Remote control protocols
Appendix A
A.1
A.1.1
Remote control protocols
RC5 protocol
RC5 protocol key interpretation
Figure 10 shows the value in the 3-byte data frame when the RC5 remote control Standby key is pressed. The RC key interpretation of these bit values for the 3-byte data frames for the various STFPC311 protocols is as follows:
A0 to A4: Device Address S: Start bit T: Toggle bit D0 to D5: Key Code Data Others: Stuffed bits (ignored)
Note:
See Section 2.4: RC and Hotkeys Config tab on page 10 for more protocol information Figure 10. Reading the RC5 Standby data
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Remote control protocols
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A.1.2
RC5 hotkey configuration
Figure 11 shows the STFPC311 being configured to interface with the RC5 protocol-based remote control. The RC5 hotkey addressing for Standby configuration is as follows:
RC Address: 0x00 Hotkey: Standby (code: 0x0C)
The RC5 protocol uses Bi-phase modulation Manchester encoding in which a low-to-high transition represents a logic high signal, and a high-to-low transition represents a logic low signal. Note: See Section 2.4: RC and Hotkeys Config tab on page 10 for more protocol information. Figure 11. RC5-based remote control Standby configuration
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Remote control protocols Figure 12 shows the signal at the IR sensor output when the RC5 Standby key is pressed. The output shown is an inversion of the IR signal received by the IR sensor. Figure 12. RC5 protocol Standby key waveform
A.2
A.2.1
RC6 protocol
RC6 protocol key interpretation
Figure 13 shows the signal at the output of IR sensor when Standby key of RC6 remote control is pressed. The RC key interpretation of these bit values for the 3-byte data frames for the various STFPC311 protocols is as follows:
A0 to A7: device Address S: Start bit T: Toggle bit D0 to D7: Key Code Data Others: Stuffed bits (ignored)
Note:
See Section 2.4: RC and Hotkeys Config tab on page 10 for more protocol information.
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Remote control protocols Figure 13. Reading the RC6 Standby data
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A.2.2
RC6 hotkey configuration
Figure 14 shows STFPC311 being configured to interface with the RC 6 protocol-based remote control. The RC6 hotkey addressing for the Standby configuration is as follows:
RC Address: 0x27 Hotkey: Standby (code: 0x0C)
The RC6 protocol uses Bi-phase modulation Manchester encoding in which a low-to-high transition represents a logic low signal and a high-to-low transition represents a logic high signal. Note: Note: These transitions are the opposite of those in the RC5 protocol. See Section 2.4: RC and Hotkeys Config tab on page 10 for more protocol information.
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Remote control protocols Figure 14. RC6-based remote control Standby configuration
Figure 15 shows the signal at the IR sensor output when the RC6 Standby key is pressed. The output shown in an inversion of the IR signal by the IR sensor. Figure 15. Standby Key for RC6 protocol
Mode Address MSB Data LSB MSB LSB
LS
SB
000
TR
0
0 1 0 01 1 1 0 0 0 0
110 0
Note:
LS: Leader Start Pulse SB: Start Bit TR: Trailer Bit
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Remote control protocols
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A.3
A.3.1
NEC protocol
NEC protocol key interpretation
Figure 16 shows the value of the 3-byte data frame when KEY1 of NEC remote is pressed. The RC key interpretation of these bit values for the 3-byte data frames for the various STFPC311 protocols is as follows:
A0 to A7: device Address S: Start bit T: Toggle bit D0 to D7: Key Code Data Others: Stuffed bits (ignored)
Note:
See Section 2.4: RC and Hotkeys Config tab on page 10 for more protocol information. Figure 16. Reading the NEC remote control key1 data
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Remote control protocols
A.3.2
NEC hotkey configuration
Figure 17 shows STFPC311 being configured to interface with NEC protocol-based remote control. The NEC hotkey addressing for the Key1 configuration is as follows:
RC Address: 0x02 Hotkey: Key1 (Code: 0x88)
A command is transmitted only once, even when the key on the remote control remains pressed. Every 110ms, a repeat code is transmitted for as long as the key remains down. This repeat code is simply a 9-ms AGC burst, followed by 2.23-ms space and a 560-s burst. Note: See Section 2.4: RC and Hotkeys Config tab on page 10 for more protocol information. Figure 17. NEC-based remote control Key1 configuration
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Remote control protocols
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Figure 18 shows the signal at the IR sensor output when the NEC remote control Key1 is pressed. The output shown is an inversion of the IR signal received by the IR sensor. Figure 18. NEC Protocol KEY1 code waveform
AGC Burst
Space Logic1
Logic0
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Front panel key banks
Appendix B
Front panel key banks
STFPC311 has key data memory of size 2x12, which means it can support 24 front panel hotkeys. These keys are divided into 3 banks of 8 keys each. Figure 19. Keys in Bank1
LSB Figure 20. Keys in Bank2
MSB
LSB
MSB
Figure 21. Keys in Bank3
LSB
MSB
Table 2.
# 1 2 3 4 5 6 7 8 9 10 Qty 1 3 2 1 2 1 1 12 1 1
Bill of materials (BOM)
Reference / footprint BT1 C1, C2, C8 C3, C6, C7 C4 C5, C9 CON1 CON2 D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 JP1 JP2 Value / generic part number BAT-2 100 nF 10 pF 10 nF 10 F DB25 - 25 pin male Header SIP4 Diode - 0.4 Header HDR1X30 HDR6X2 Description Berg strip for battery Capacitor Capacitor Capacitor Capacitor Connector Connector Diode Header Header Manufacturer Any Any Any Any Any Any Any Any Not mounted Any
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Front panel key banks Table 2.
# Qty
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Bill of materials (BOM) (continued)
Reference / footprint KS1, KS 2, KS 3, KS 4, KS 5, KS 6, KS 7, KS 8,KS 9, KS 10, KS 11, KS 12, KS 13, KS 14, KS 15 LED1, LDE2, LED3, LED4, Mute, STBY1 Q13 Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11,Q12 R1, R10, R2, R3, R4, R5 R11 R6, R9,R12, R13, R16, R17 R14 R15 R7, R8, R19 R18 S1 U1 U2 U3 U4 U5 X1, X2 Y1 Value / generic part number Description Manufacturer
11
15
Push tact switch
Keys
Any
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
6 1 13 6 1 6 1 1 3 1 1 1 1 1 1 1 2 1
SMD SOT-23/BC857B SOT-23/BC547 220 0 18 k 33 k 100 10 k 4.7 k SW-DIP4 7-SEG-LED 74VHC14TTR STFPC311BTR 74V2G07STR M41T81M6E Banana socket 32.768 KHz-BCY-W2/D3.1
LED PNP Transistor NPN Transistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor DIP switch Seven segment display Hex - inverter VFD Controller I2C Buffer RTC Socket Crystal oscillator
Any Any Any Any Any Any Any Any Any Any Any Any ST ST ST ST FARNELL 150-040 Any
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1 6
2
3
4
5
U1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 VCC3.3V
JP1
Header 30
VCC3.3V 220
LED4 LED3
LED4 220 R2 220 LED2 7-SEG-LED Provision to Connect to different LED R3 220 LED1 R4 220 MUTE R5
G(1) G(2) G(3) G(4) G(5) G(6) G(7) G(8) S(20)/G(9) S(19)/G(10) S(18)/G(11) S(17)/G(12) S(16)/G(13) S(15)/G(14) S(14)/G(15) S(13)/G(16) S/KS(12) S/KS(11) S/KS(10) S/KS(9) S/KS(8) S/KS(7) S/KS(6) S/KS(5) S/KS(4) S/KS(3) S/KS(2) S/KS(1)
R1
D
S1 S2 S3 S4 S5 K1 1 2 3 4 5 6 SEG1 SEG2 SEG3 SEG4 SEG5 K1 K4 SEG8 SEG7 K3 K2 SEG6 12 11 10 9 8 7
K4 S8 S7 K3 K2 S6
D
LED3
LED2
LED1
CON1 220 STBY VCC3.3V R10 8 7 6 5 LED Segment Driver 2 S1 2 S2
MUTE1
SW1 SW2 NC READY
G(1) G(2) G(3) G(4) G(5) G(6) G(7) G(8) S(20)/G(9) S(19)/G(10) S(18)/G(11)
S(14)/G(15) S(13)/G(16) S/KS(12) S/KS(11) S/KS(10) S/KS(9) S/KS(8) S/KS(7) S/KS(6) S/KS(5) S/KS(4) S/KS(3) S/KS(2) S/KS(1)
DOUT STB CLK
STBY1
2 S3
U2 74VHC14 S1 Q1
S/KS(11 ) S/KS(21 )
Q2
S/KS(3) 1
Q3
S/KS(41 )
Q4
R14 52 51 50 49 48 47 46 45 44 43 42 41 40 1 2 3 4 33k R13 18k 3 R12 18k VCC3.3V 2 S5 C4 10nF
S/KS(51 )
LED1 LED2 LED3 LED4 DOUT DI N CLK STB G(1) G(2) G(3) G(4) G(5)
VCC3.3V U3 STFPC311 BC547
BC547 3 3
BC547 3
2 S4 BC547 VCC3.3V C 2 S6 2 S7 Q6 Q7 Q8 2 S8
C LED1 LED2 LED3 LED4 DOUT DIN CLK STB GRID1 GRID2 GRID3 GRID4 GRID5
R9 18k
DIN
1 2 3 4 5 6 7
1A 1Y 2A 2Y 3A 3Y GND
VCC 6A 6Y 5A 5Y 4A 4Y
14 13 12 11 10 9 8
LED Segment Driver
Figure 22. Schematic STFPC311- LED
R11 0 C1 GND 100nF
Q5
S/KS(6) 1
13 25 12 24 SDA_IN 11 23 10 SPI_DOUT 22 9 21 8 20 SCL 7 19 6 SDA_OUT 18 5 READY 17 4 SPI_STB 16 3 SPI_DIN 15 2 SPI_CLK 14 1 BC547 3 3
S/KS(7) 1
S/KS(81 )
BC547 3
BC547 3
BC547 VCC3.3V LED Grid Driver 3 K1 3 K2 3 K3 3 K4 Q9 Q10
G(1) 1 G(21 ) G(31 )
DB25-M R16 18k R17 18k VCC3.3V C2 14 15 16 17 18 19 20 21 22 23 24 25 26 100nF SEG1/KS1 SEG2/KS2 SEG3/KS3 SEG4/KS4 SEG5/KS5 SEG6/KS6 SEG7/KS7 SEG8/KS8 SEG9/KS9 SEG10/KS10 SEG11/KS11 SEG12/KS12 VEE
R15
VCC3.3V
R6 18k
C5 10uF
100
1 2 3 4 5 6 7 8 9 10 11 12 13 OSC SW1 SW2 MUTE STBY VDD GND KEY1 KEY2 READY IRDATA_IN VEE VDD
G(6) G(7) G(8) S(20)/G(9) S(19)/G(10) S(18)/G(11) S(17)/G(12) S(16)/G(13) S(15)/G(14) S(14)/G(15) S(13)/G(16)
NC VDD GRID6 GRID7 GRID8 SEG20/GRID9 SEG19/GRID10 SEG18/GRID11 SEG17/GRID12 SEG16/GRID13 SEG15/GRID14 SEG14/GRID15 SEG13/GRID16
39 38 37 36 35 34 33 32 31 30 29 28 27
CON2
Q11
G(41 )
GND VCC NC OUT
1 2 3 4
Q12
BC547 2 2
BC547 2
BC547 2
BC547 B
KS10
KS12
KS14
KS1
KS2
KS3
KS4
KS5
KS6
KS7
KS9
KS11
SCL 1 SDA_IN 2 SDA_OUT 3
I2C_SCL I2C_SDA
KS8
KS13
KS15
U4 R18 4.7k Q13 3 BC857B 2 1
VCC3.3V
RTC_IRQ
IR Demodulator
KEY2 KEY1
S/KS(1) S/KS(2) S/KS(3) S/KS(4) S/KS(5) S/KS(6) S/KS(7) S/KS(8) S/KS(9) S/KS(10) S/KS(11) S/KS(12)
B
F.Header
Front Panel Keys
74V2G07
D1 S/KS(1) D2 S/KS(2) D3 S/KS(3) D4 S/KS(4) D5 S/KS(5) D6 S/KS(6) D7 S/KS(7) D8 S/KS(8) D9 S/KS(9) D10 S/KS(10) D11 S/KS(11) D12 S/KS(12) 1N4148
4
1A VCC 3Y 1Y 2A 3A GND 2Y
8 7 6 5
C6 10pF
C3 10pF U5 M41T81 Y1 32.768kHz
VBAT
VCC3.3V
I2C BUFFER
R19 10k
RTC_IRQ
VCC3.3V X1 X2 VBAT GND VCC IRQ SCL SDA C8 100nF C9 10uF X2 VCC3.3V X1 GND Real Time Clock BT1 Battery C7 10pF Power Plugs A Title
VCC3.3V
JP2
1 2 3 4
8 7 6 5
STB DIN READY MUTE RTC_IRQ
1 3 5 7 9 11
2 4 6 8 10 12
CLK DOUT STBY I2C_SDA I2C_SCL
R7 10k
R8 10k
A
Header 6X2
Front Panel Board (LED):STFPC311
Size B Date: File: 2 3 4 5 Number Revision Version0.1 30-Mar-2007 Sheet of C:\Documents and Settings\deepak pathania\Dawktop\: DFPC31urniawan DB Dr es n BySTicky K 1_LED.D 6
Signal and power header Provision
Front panel key banks
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1
Revision history
UM0276
3
Revision history
Table 3.
Date 31-Aug-2006 02-Apr-2007
Revision history
Revision 1 2 Initial release Bill of materials (BOM) and Schematic STFPC311- LED added Changes
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UM0276
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