H8SSLASH2214 datasheet(679/936 Pages) RENESAS

Il numero della parte	H8S/2214

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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Section 17 Power-Down Modes

Rev.4.00 Sep. 18, 2008 Page 619 of 872

REJ09B0189-0400

Hardware

standby mode

STBY pin = low

Notes:

• When a transition is made between modes by means of an interrupt, transition cannot be made

on interrupt source generation alone. Ensure that interrupt handling is performed after accepting

the interrupt request.

• From any state except hardware standby mode, a transition to the power-on reset state occurs

whenever

RES goes low. From any state except hardware standby mode and the power-on reset

state, a transition to the manual reset state occurs whenever

MRES goes low.

• From any state, a transition to hardware standby mode occurs when

STBY goes low.

Sleep mode

(main clock)

SSBY = 0

Software

standby mode

SSBY = 1

Medium-speed

mode

(main clock)

High-speed

mode

(main clock)

Power-on

reset state

Manual

reset state

STBY pin = high,

RES pin = low

RES pin = high

MRES = high

Program

execution state

Reset state

SCK2 to

SCK0

≠ 0

SCK2 to

SCK0

= 0

Program-halted state

SLEEP

instruction

All interrupt

SLEEP

instruction

External

interrupt*

: Transition after exception handling

: Power-down mode

* NMI, IRQ0 to IRQ7

Figure 17.1 Mode Transitions

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