HD404314H Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics

Número de pieza

componentes Descripción

Fabricante

HD404314H

4-bit HMCS400-series microcomputer

Hitachi -> Renesas Electronics 

HD404318 Series

,
,Resetby

RESET input or

by watchdog timer

RAME = 0

RAME = 1

RESET 1 RESET 2

Standby mode

fOSC: Oscillate

øCPU: Stop

øPER: fcyc

Active

mode

SBY

instruction

Interrupt

fOSC: Oscillate

øCPU: fcyc

øPER: fcyc

STOPC

Stop mode

STOP

instruction

fOSC: Stop

øCPU: Stop

øPER: Stop

fOSC: Main oscillation frequency

fcyc: fOSC/4

øCPU: System clock

øPER: Clock for other peripheral

functions

Figure 11 MCU Status Transitions

In stop mode, the system oscillator is stopped. To ensure a proper oscillation stabilization period of at least

tRC when clearing stop mode, execute the cancellation according to the timing chart in figure12.

Oscillator

Internal

clock

Stop mode

RESET

or

STOPC

STOP instruction execution

tres

tres ≥ tRC (stabilization period)

Figure 12 Timing of Stop Mode Cancellation

19

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