68901Q05中文資料意法半導(dǎo)體數(shù)據(jù)手冊PDF規(guī)格書

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