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MITSUBISHI MICROCOMPUTERS

ELI

PR

.

.

tion hange

c

ifica

pec ject to

s

ub

inal

t a f are s

s no limits

i

his tric

e

e: T

otic param

N

ome

S

M

ARY

IN

4282 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

DESCRIPTION

The 4282 Group enables fabrication of 8

脳

7 key matrix and has

the followin timers;

鈥?an 8-bit timer which can be used to set each carrier wave and

has two reload register

鈥?an 8-bit timer which can be used to auto-control and has a

reload register.

FEATURES

鈥?Number of basic instructions ............................................. 68

鈥?Minimum instruction execution time ............................ 8.0

碌

s

(at f(X

IN

) = 4.0 MHz, system clock = f(X

IN

)/8)

鈥?Supply voltage ................................................. 1.8 V to 3.6 V

鈥?Subroutine nesting ..................................................... 4 levels

鈥?Timer

Timer 1 ................................................................... 8-bit timer

(This has a reload register and carrier wave output auto-control

function)

Timer 2 ................................................................... 8-bit timer

(This has two reload registers and carrier wave output function)

鈥?Logic operation function (XOR, OR, AND)

鈥?RAM back-up function

鈥?Key-on wakeup function (ports D

4

鈥揇

7

, E

0

鈥揈

2

, G

0

鈥揋

3

) .... 11

鈥?I/O port (ports D, E, G, CARR) .......................................... 16

鈥?Oscillation circuit ..................................... Ceramic resonance

鈥?Watchdog timer

鈥?Power-on reset circuit

鈥?Voltage drop detection circuit ......................... Typical:1.50 V

(system reset)

APPLICATION

Various remote control transmitters

Product

M34282M1-XXXGP *

M34282M2-XXXGP *

M34282E2GP *

* : Under development (June, 2000)

ROM (PROM) size

(脳 9 bits)

1024 words

2048 words

2048 words

RAM size

(脳 4 bits)

48 words

64 words

64 words

Package

20P2E/F-A

20P2E/F-A

20P2E/F-A

ROM type

Mask ROM

Mask ROM

One Time PROM

PIN CONFIGURATION (TOP VIEW)

V

SS

E

2

E

1

X

IN

X

OUT

E

0

G

0

G

1

G

2

G

3

1

2

20

19

V

DD

CARR

D

0

D

1

D

2

D

3

D

4

D

5

D

6

D

7

M34282Mx-XXXGP

3

4

5

6

7

8

9

10

18

17

16

15

14

13

12

11

Outline 20P2E/F-A

next

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