MK68901中文资料意法半导体数据手册PDF规格书

DESCRIPTION

The MK68901 MFP (Multi-Function Peripheral) is a combination of many of the necessary peripheral functions in a microprocessor system. Included are :

Eight parallel I/O lines

Interrrupt controller for 16 sources

Four timers

Single channel full duplex USART

■ 8 INPUT/OUTPUT PINS

• Individually programmable direction

• Individual interrupt source capability

- Programmable edge selection

■ 16 SOURCE INTERRUPT CONTROLLER

• 8 Internal sources

• 8 External sources

• Individual source enable

• Individual source masking

• Programmable interrupt service modes

- Polling

- Vector generation

- Optional In-service status

• Daisy chaining capability

■ FOUR TIMERS WITH INDIVIDUALLY PRO GRAMMABLE PRESCALING

• Two multimode timers

- Delay mode

- Pulse width measurement mode

- Event counter mode

• Two delay mode timers

• Independent clock input

• Time out output option

■ SINGLE CHANNEL USART

• Full Duplex

• Asynchronous to 65 kbps

• Byte synchronous to 1 Mbps

• Internal/External baud rate generation

• DMA handshake signals

• Modem control

• Loop back mode

■ 68000 BUS COMPATIBLE

■ 48 PIN DIP OR 52 PIN PLCC