HD404612FS datasheet(27/91 Pages) RENESAS

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HD404618 Series

System Clock (ø

CPU)

Operating

Stopped

Non-time-base peripheral function clock (ø

PER)

Operating

Active mode

Standby mode

Subactive mode

Stopped

—

Watch mode (TMA3 = 1)

Stop mode (TMA3 = 0)

Table 16 Operations in Low-Power Dissipation Modes

Function

Stop Mode

Watch Mode*

Standby Mode

Subactive Mode*

2, 3

CPU

Reset

Retained

RAM

Retained

Timer A

Reset

Timer B

Reset

Stopped

Timer C

Reset

Stopped

Serial interface

Reset

Stopped*

LCD

Reset

DTMF

Reset

Stopped

Reset

I/O

Reset*

Retained

Notes: OP indicates operating.

1. Output pins are at high impedance.

2. Subactive mode is an optional function specified on the function option list.

3. In the watch and subactive modes, the MCU requires a 32.768 kHz crystal oscillator.

4. Transmission/reception is activated if a clock is input in external clock mode. (However,

interrupts stop.)

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