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Connector Pinouts
Headers and connections to all digital, analog and PWM inputs/outputs of the HCS12/9S12 development board


The PDQ Board Lite is a low cost HCS12 9S12 single board computer and development platform for instrument control and automation. Numerous headers and connectors provide access to its plentiful I/O and custom prototyping area.

The following tables provide the signal pinouts for all headers and connectors on the PDQ Board Lite. The headers are easily identified by designators on the board. Their positions are also shown in the following figure:

Connections to the analog and digital I/O of a 9S12/HCS12 development board
Fig. 1  Top view of the PDQ Board Lite showing connector placement.
 

H1: Serial connector

H1: Serial Communications Header
Signal Pins Signal
/TxD1 —1 2— /RxD1
DGND —3 4— RxD2
TxD1 —5 6— RxD1
/TxD2 —7 8— /RxD2
DGND —9 10— TxD2
Note:
This pinout differs from that of the PDQ Board comm header in that RS485 signals are replaced with logic level RS232 signals.
 

H2: Power connector

While a footprint is provided on the board, no header is installed. For power input you should use H12 or apply +5V to pin 2 of H10.

H2: Power Connector
Pins Signal
1— V+Raw
2— GND
3— Vcc (+5)
4— NC
5— NC
6— NC
7— NC
Note:
Only V+RAW (pin 1), GND (pin 2) and +5V (pin 3) are connected. V+RAW is not used by the PDQ Board Lite, but it is passed through to the Analog I/O Connector (H4) and the uninstalled Wildcard headers (H3 and H9).
 

H3: Wildcard header 0

While a footprint is provided on the board, no header is installed.

H3: Wildcard Port Header 0
Signal Pins Signal
GND —1 2— +5V
NC —3 4— V+RAW
NC —5 6— NC
NC —7 8— NC
NC —9 10— NC
NC —11 12— NC
NC —13 14— NC
NC —15 16— NC
NC —17 18— NC
NC —19 20— NC
NC —21 22— NC
NC —23 24— NC
Note:
Only +5V, V+Raw and GND are connected. V+RAW is not used by the PDQ Board Lite, but it is passed through to the Analog I/O Connector (H4). Other pins may be wired to as custom applications require.
 

H4: Analog I/O connector

H4: Analog I/O Header
Signal Pins Signal
AGND —1 2— +5VAN
GND —3 4— V+RAW
(PJ7) SCL —5 6— SDA (PJ6)
PM7 —7 8— PM6
AN15 —9 10— AN14
AN13 —11 12— AN12
AN11 —13 14— AN10
AN9 —15 16— AN8
AN7 —17 18— AN6
AN5 —19 20— AN4
AN3 —21 22— AN2
AN1 —23 24— AN0
Note:
Signals are the same as for the PDQ Board.
 

H5: Prototyping field header

H5: Prototyping Field Header
Signal Pins Signal
NC —1 2— NC
NC —3 4— NC
NC —5 6— NC
NC —7 8— NC
NC —9 10— NC
Note:
This unassigned 10-pin header is available for custom circuitry. You can wire signals from the prototyping area to this connector for connection to external devices.
 

H6: Prototyping signal header

H6: Prototyping Signal Header
Signal Pins Signal
PP1/PWM1 —1 2— PP0/PWM0
PT1/IOC1 —3 4— PT0/IOC0
GND —5 6— +5V
AN1 —7 8— AN0
AN3 —9 10— AN2
Note:
This connector provides eight of the processor's IO signals as well as +5V and GND for connection to custom circuitry mounted in the prototyping area.
 

H7: Power/Comm header

H7: Power/Comm Header
Signal Pins Signal
/TxD1 —1 2— /RxD1
DGND —3 4— NC
TxD1 —5 6— RxD1
/TxD2 —7 8— /RxD2
DGND —9 10— NC
Note:
This pinout differs from that of the PDQ Board comm header in that RS485 signals are replaced with logic level RS232 signals for serial 1. This connector mirrors H1 except that pins 4 and 10 (for logic level serial 2 RS232) are not connected.
 

H8: BDM connector

H8: BDM Header
Signal Pins Signal
BGND —1 2— GND
NC —3 4— /RESET
NC —5 6— +5
Note:
Signals are the same as for the PDQ Board.
 

H9: Wildcard header 1

While a footprint is provided on the board, no header is installed.

H9: Wildcard Port Header 1
Signal Pins Signal
GND —1 2— +5V
NC —3 4— V+RAW
NC —5 6— NC
NC —7 8— NC
NC —9 10— NC
NC —11 12— NC
NC —13 14— NC
NC —15 16— NC
NC —17 18— NC
NC —19 20— NC
NC —21 22— NC
NC —23 24— NC
Note:
Only +5V, V+Raw and GND are connected. V+RAW is not used by the PDQ Board Lite, but it is passed through to the Analog I/O Connector (H4). Other pins may be wired to as custom applications require.
 

H10: Digital I/O connector

H8: Digital Field Header
Signal Pins Signal
GND —1 2— +5V
PM5 —3 4— PM4
PM3 —5 6— PM2
PM1 —7 8— PM0
PP7 —9 10— PP6
PP5 —11 12— PP4
PP3 —13 14— PP2
PP1 —15 16— PP0
(TxD4) PT7 —17 18— PT6 (RxD4)
(TxD3) PT5 —19 20— PT4 (RxD3)
PT3 —21 22— PT2
PT1 —23 24— PT0
Note:
Signals are the same as for the PDQ Board.
For logic-level serial ports 3 and 4,
use the Software UART library.
 

H11: SPI connector

H11: SPI Header
Signal Pins Signal
/SS1 —1 2— /SS2
SCK1 —3 4— SCK2
MOSI1 —5 6— MOSI2
MISO1 —7 8— MISO2
DGND —9 10— +5V
Note:
Signals at pins 1-9 are the same as for the PDQ Board; but pin 10 connects to +5V.
 

H12: Power (micro-USB) connector

H12: micro-USB Power Input
Pins Signal
1— +5V
2— Data+
3— Data-
4— ID/NC
5— GND
Note:
Only +5 and GND are used by the board. The three data signals from this connector are routed to holes near the connector for forward compatibility and customizability.
 

J1: Factory cleanup header

J1: Factory Cleanup
Pins Signal
1— Factory clean input
2— +5V through 10K
Note:
Shorting this jumper (next to the reset button) during a reset or power-up implements a factory cleanup that removes any autostart vectors and returns the PDQ Board Lite to its default software configuration.
 
This page is about: 9S12 HCS12 SBC & Developer Board Connector Pinouts, I/O Connections – Headers and connectors for analog and digital I-O, PWM, I2C, RS232 serial communications lines, and SPI of the PDQ Board Lite, an inexpensive HCS12 single board computer and 9S12 development board. Freescale MC9S12DP512 MC9S12A512 MCU, RS232, RS485, serial communications, serial peripheral interface, SPI, power supply, digital io, analog io
 
 
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