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STMicroelectronics - MULTI.FUNCTION PERIPHERAL

Numéro de référence 68901N05
Description MULTI.FUNCTION PERIPHERAL
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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68901N05 fiche technique
MK68901
MULTI–FUNCTION PERIPHERAL
. 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
1
DPIP48
Figure 1 : Pin connections.
PLCC52
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
The use of the MFP in a system can significantly re-
duce chip count, thereby reducing system cost. The
MFP is completely 68000 bus compatible, and 24 di-
rectly addressable internal registers provide the ne-
MFP
December 1988
1/33

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