M34280M1-082GP datasheet(3/47 Pages) MITSUBISHI

Part #	M34280M1-082GP

Description	SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS

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Manufacturer	MITSUBISHI [Mitsubishi Electric Semiconductor]

Direct Link	http://www.mitsubishichips.com

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MITSUBISHI

ELECTRIC

3

MITSUBISHI MICROCOMPUTERS

4280 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS

PERFORMANCE OVERVIEW

Function

62

8.0

µs (at 4.0 MHz system clock frequency)

(f(XIN) = 4.0 MHz, system clock = f(XIN)/8, VDD = 3 V)

1024 words ! 9 bits

32 words ! 4 bits

Seven independent output ports

1-bit I/O port with the pull-down function

3-bit input port with the pull-down function

2-bit output port (E0, E1)

4-bit I/O port with the pull-down function

1-bit output port; CMOS output

8-bit timer with a reload register

4 levels (However, only 3 levels can be used when the TABP p instruction is executed)

CMOS silicon gate

20-pin plastic molded SOP (20P2N-A)/SSOP (20P2E/F-A)

–20

°C to 85 °C

1.8 V to 3.6 V

400

µA

(f(XIN) = 4.0 MHz, system clock = f(XIN)/8, VDD = 3 V)

0.1

µA (at room temperature, VDD = 3 V)

Parameter

Number of basic instructions

Minimum instruction execution time

Memory sizes

Input/Output

ports

Timer 1

Subroutine nesting

Device structure

Package

Operating temperature range

Supply voltage

Power

dissipation

(typical value)

ROM

RAM

D0–D6

D7

E0–E2

E0, E1

G0–G3

CARR

Active mode

RAM back-up mode

M34280M1/

E1

Output

I/O

Input

Output

I/O

Output

PIN DESCRIPTION

Name

Power supply

Ground

System clock input

System clock output

Output port D

I/O port D

I/O port E

I/O port G

Carrier wave output

for remote control

Input/Output

—

Input

Output

I/O

Output

Input

I/O

Output

Function

Connected to a plus power supply.

Connected to a 0 V power supply.

I/O pins of the system clock generating circuit. Connect a ceramic resonator

between pins XIN and XOUT. The feedback resistor is built-in between pins XIN

and XOUT.

Each pin of port D has an independent 1-bit wide output function. The output

structure is P-channel open-drain.

1-bit I/O port. For input use, turn on the built-in pull-down transistor and set the

latch of the specified bit to “0.” In addition, key-on wakeup function using “H”

level sense becomes valid. The output structure is P-channel open-drain.

2-bit (E0, E1) output port. The output structure is P-channel open-drain.

3-bit input port. For input use (E0, E1), turn on the built-in pull-down transistor and

set the latch of the specified bit to “0.” In addition, key-on wakeup function using

“H” level sense becomes valid. Port E2 has an input-only port and has a key-on

wakeup function using “H” level sense and pull-down transistor.

4-bit I/O port. For input use, set the latch of the specified bit to “0.” The output

structure is P-channel open-drain. Port G has a key-on wakeup function using

“H” level sense and pull-down transistor.

Carrier wave output pin for remote control. The output structure is CMOS circuit.

VDD

VSS

XIN

XOUT

D0–D6

D7

E0–E2

G0–G3

CARR

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M34280M1-082GP Datasheet(PDF) 3 Page - Mitsubishi Electric Semiconductor

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