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68901P04 Datasheet

  • 68901P04

  • MULTI.FUNCTION PERIPHERAL

  • 314.63KB

  • 33頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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MK68901
MULTI鈥揊UNCTION PERIPHERAL
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.
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8 INPUT/OUTPUT PINS
鈥?/div>
Individually programmable direction
鈥?/div>
Individual interrupt source capability
-
Programmable edge selection
16 SOURCE INTERRUPT CONTROLLER
鈥?/div>
8 Internal sources
鈥?/div>
8 External sources
鈥?/div>
Individual source enable
鈥?/div>
Individual source masking
鈥?/div>
Programmable interrupt service modes
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Polling
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Vector generation
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Optional In-service status
鈥?/div>
Daisy chaining capability
FOUR TIMERS WITH INDIVIDUALLY PRO-
GRAMMABLE PRESCALING
鈥?/div>
Two multimode timers
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Delay mode
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Pulse width measurement mode
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Event counter mode
鈥?/div>
Two delay mode timers
鈥?/div>
Independent clock input
鈥?/div>
Time out output option
SINGLE CHANNEL USART
鈥?/div>
Full Duplex
鈥?/div>
Asynchronous to 65 kbps
鈥?/div>
Byte synchronous to 1 Mbps
鈥?/div>
Internal/External baud rate generation
鈥?/div>
DMA handshake signals
鈥?/div>
Modem control
鈥?/div>
Loop back mode
68000 BUS COMPATIBLE
48 PIN DIP OR 52 PIN PLCC
1
DPIP48
PLCC52
Figure 1 :
Pin connections.
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-
December 1988
MFP
1/33

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