参数资料
型号: MC9S12K
厂商: 飞思卡尔半导体(中国)有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件页数: 90/126页
文件大小: 7307K
代理商: MC9S12K
Device User Guide — 9S12KT256DGV1/D V01.09
66
Freescale Semiconductor
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 all other modes the reset state of the ROMON bit is as
follows:
special single : ROMCTL = 1
normal single : ROMCTL = 1
emulation expanded wide : ROMCTL = 0
emulation expanded narrow : ROMCTL = 0
special test : ROMCTL = 0
peripheral test : ROMCTL = 1
2.3.31 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.
2.3.32 PM7 / TXCAN4 — Port M I/O Pin 7
PM7 is a general purpose input or output pin. It can be configured as the transmit pin TXCAN of the
Motorola Scalable Controller Area Network controllers 4 (CAN4).
2.3.33 PM6 / RXCAN4 — Port M I/O Pin 6
PM6 is a general purpose input or output pin. It can be configured as the receive pin RXCAN of the
Motorola Scalable Controller Area Network controllers 4 (CAN4).
2.3.34 PM5 / TXCAN0 / TXCAN4 / 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 controllers 0 or 4 (CAN0 or CAN4). It can be configured as
the serial clock pin SCK of the Serial Peripheral Interface 0 (SPI0).
2.3.35 PM4 / RXCAN0 / RXCAN4/ 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 controllers 0 or 4 (CAN0 or CAN4). 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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