MB89990 データシートの表示（PDF） - Fujitsu

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MB89990

8-bit Proprietary Microcontroller

Fujitsu 

MB89990 Series

s BLOCK DIAGRAM

X0

X1

RST

Main oscillator

circuit

Clock control

Reset circuit

(WDT)

Timebase timer

RAM

(128 × 8 bits)

F2MC-8L

CPU

ROM

(32K × 8 bits)

The other pins

TEST, VCC, VSS

Remote-control

carrier frequency

8-bit timer/counter

8-bit timer/counter

External interrupt

CMOS I/O port

CMOS I/O port

External interrupt

(wake-up function)

P34/TO/INT10

P33/EC

P30 to P32

P35/INT11

P36/INT12

P37/RCO

8

P00/INT20 to

P07/INT27

N-ch open drain I/O port

6

P40 to P45

16

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