User's Manual

Interface Locations and Pinouts
1320x-QE128EVB Reference Manual, Rev. 0.0
Freescale Semiconductor 4-5
4.9 RS232-Compatible UART Connector
The 1320x-QE128EVB provides a secondary standard RS232-compatible UART serial port. Connection
is provided by a standard DB9 connector (J14). The RS232 converter is connected to MCU port SCI1.
4.10 GPIO Connectors
The 1320x-QE128EVB contains two GPIO connectors (J3) and (J4). The GPIO connectors are a standard
2.54mm/0.1inch spacing, 20- and 32-pin header, respectively.
These connectors provide access to MCU GPIO, Timer outputs, ADC inputs, the SPI port, the I
2
C port,
among others. Power is also provided on both connectors.
• V_PERIF is the main supply voltage. Current draw should be limited to 50 mA.
• Some of the GPIO are shared with on-board devices. Check for any conflict.
1
NC = No Connect.
2
Pulled-up to V_BB through 51kohms. Hardware reset not supported on
this BDM port.
Table 4-4. GPIO Connector J3 Pinouts
Pin
Number
Name Function Notes
1 PTE2/BUZZER GPIO Hardwired to Q2 Base to Turn
On/Off on-board Buzzer (LS1)
2 GND System ground
3 PTF2 ADC Analog Input Channel or GPIO
4 GND System ground
5 PTF3 ADC Analog Input Channel or GPIO
6 GND System ground
7 PTD2 KBI input or GPIO Hardwired to Push Button SW4
8 GND System ground
9 PTD3 KBI input or GPIO Hardwired to Push Button SW5
10 GND System ground
11 PTB0/RxD1 KBI Input or SCI1 or ADC Analog Input
Channel or GPIO
Hardwired to J13 and to RS-232
Transceiver
12 GND System ground
13 PTB1/TxD1 KBI Input or SCI1 or ADC Analog Input
Channel or GPIO
Hardwired to J15 and to RS-232
Transceiver
14 GND System ground
15 V_PERIF System Supply
16 GND System ground