TS68HC901 Datasheet, PDF (1/42 Pages) STMicroelectronics – HCMOS MULTI-FUNCTION PERIPHERAL

®
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
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