M34280M1-089FP View Datasheet(PDF) - Mitsumi

Part Name

Description

Manufacturer

M34280M1-089FP

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

Mitsumi 

MITSUBISHI MICROCOMPUTERS

4280 Group

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

RESET FUNCTION

The 4280 Group has the power-on reset circuit, though it does

not have RESET pin. System reset is performed automatically

at power-on, and software starts program from address 0 in page

0.

In order to make the built-in power-on reset circuit operate

efficiently, set the voltage rising time until VDD= 0 to 2.2 V is

obtained at power-on 1ms or less.

f(XIN)

“H”

Internal reset signal “L”

f(XIN) 16384 pulses

Software starts

(address 0 in page 0)

Fig. 17 Reset release timing

VDD

Internal reset signal

Power-on reset circuit

Voltage drop detection circuit

Watchdog timer output

Power-on reset circuit

output voltage

Reset state

Internal reset signal

Power-on

Reset released

Fig. 18 Power-on reset circuit example

MITSUBISHI

16

ELECTRIC

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