M34282M2 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC

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M34282M2

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

MITSUBISHI MICROCOMPUTERS

4282 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

RESET FUNCTION

The 4282 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)

Internal reset signal

“H”

“L”

Fig. 18 Reset release timing

f(XIN) 16384 pulses

Software operation starts

(address 0 in page 0)

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. 19 Power-on reset circuit example

MITSUBISHI

ELECTRIC

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