TS68HC901 データシートの表示（PDF） - STMicroelectronics

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TS68HC901

HCMOS MULTI-FUNCTION PERIPHERAL

STMicroelectronics 

®

TS68HC901

HCMOS MULTI-FUNCTION PERIPHERAL

The TS68HC901 CMFP (CMOS Multi-Function

Peripheral) is a combination of many of the neces-

sary peripheral functions in a microprocessor sys-

.tem.

Included are :

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

PROGRAMMABLE 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

DESCRIPTION

The use of the CMFP in a system can significantly

reduce chip count, thereby reducing system cost.

The CMFP is completely 68000 bus compatible, and

24 directly addressable internal registers provide

the necessary control and status interface to the pro-

grammer.

The CMFP is a derivative of the MK3801 STI, a Z80

family peripheral.

September 1992

48

1

PDIP48

PLCC52

(Ordering Information at the end of the Datasheet

1/42

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