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MITSUBISHI MICROCOMPUTERS

4250 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

DESCRIPTION

The 4250 Group is a 4-bit single-chip microcomputer designed

with CMOS technology. Its CPU is that of the 720 series using a

simple instruction set. The computer is equipped with one 8-bit

timer which has a reload register and the interrupt function.

The various microcomputers in the 4250 Group include variations

of the built-in memory type as shown in the table below.

鈥?Timer

Timer 1 ................................ 8-bit timer with a reload register

鈥?Interrupt ................................................................... 2 sources

鈥?CR oscillation circuit (Capacitor and Resistor connected

externally)

鈥?Logic operation instruction

鈥?RAM back-up function

鈥?Key-on wakeup function (ports G and S, INT pin)

FEATURES

鈥?Minimum instruction execution time ............................. 1.0

碌

s

(at 4.0 MHz system clock frequency, V

DD

=4.5 V to 5.5 V)

鈥?Supply voltage

4.5 V to 5.5 V (at 4.0 MHz system clock frequency)

2.5 V to 5.5 V (at 1.0 MHz system clock frequency)

2.2 V to 5.5 V (at 1.0 MHz system clock frequency:

only for Mask ROM version)

ROM (PROM) size

(! 9 bits)

2048 words

2048 words

APPLICATION

Electric household appliances, consumer electronics products

(mouse, etc.)

Product

M34250M2-XXXFP

M34250E2-XXXFP *

RAM size

(! 4 bits)

64 words

64 words

Package

20P2N-A

20P2N-A

ROM type

Mask ROM

One Time PROM

*: Shipped after writing (shipped in blank: M34250E2FP)

PIN CONFIGURATION (TOP VIEW)

M34250M2-XXXFP

V

D D

V

SS

X

IN

X

OUT

CNV

SS

RESET

F

0

F

1

G

0

/INT

G

1

/T

OUT

1

2

20

19

D

0

D

1

D

2

/C

D

3

/K

S

0

S

1

S

2

S

3

G

3

G

2

M34250M2-XXXFP

MITSUBISHI

ELECTRIC

3

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18

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Outline 20P2N-A

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