S12SPIV2D datasheet(59/126 Pages) FREESCALE

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MC9S12DJ64 Device User Guide — V01.17

2.3.30 PJ6 / KWJ6 / SDA / RXCAN0 — PORT J I/O Pin 6

PJ6 is a general purpose input or output pin. It can be configured to generate an interrupt causing the MCU

to exit STOP or WAIT mode. It can be configured as the serial data pin SDA of the IIC module. It can be

configured as the receive pin RXCAN of the Motorola Scalable Controller Area Network controller 0

(CAN0).

2.3.31 PJ[1:0] / KWJ[1:0] — Port J I/O Pins [1:0]

PJ1 and PJ0 are general purpose input or output pins. They can be configured to generate an interrupt

causing the MCU to exit STOP or WAIT mode.

2.3.32 PK7 / ECS / ROMCTL — Port K I/O Pin 7

PK7 is a general purpose input or output pin. During MCU expanded modes of operation, this pin is used

as the emulation chip select output (ECS). During MCU expanded modes of operation, this pin is used to

enable the Flash EEPROM memory in the memory map (ROMCTL). At the rising edge of RESET, the

state of this pin is latched to the ROMON bit. For a complete list of modes refer to 4.2 Chip Configuration

Summary.

2.3.33 PK[5:0] / XADDR[19:14] — Port K I/O Pins [5:0]

PK5-PK0 are general purpose input or output pins. In MCU expanded modes of operation, these pins

provide the expanded address XADDR[19:14] for the external bus.

2.3.34 PM7 — Port M I/O Pin 7

PM7 is a general purpose input or output pin.

2.3.35 PM6 — Port M I/O Pin 6

PM6 is a general purpose input or output pin.

2.3.36 PM5 / TXCAN0 / SCK0 — Port M I/O Pin 5

PM5 is a general purpose input or output pin. It can be configured as the transmit pin TXCAN of the

Motorola Scalable Controller Area Network controller 0 (CAN0). It can be configured as the serial clock

pin SCK of the Serial Peripheral Interface 0 (SPI0).

2.3.37 PM4 / RXCAN0 / MOSI0 — Port M I/O Pin 4

PM4 is a general purpose input or output pin. It can be configured as the receive pin RXCAN of the

Motorola Scalable Controller Area Network controller 0 (CAN0). It can be configured as the master output

(during master mode) or slave input pin (during slave mode) MOSI for the Serial Peripheral Interface 0

(SPI0).

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