H8SXSLASH1663R datasheet(1308/1504 Pages) RENESAS

Part #	H8SX/1663R

Description	Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

PDF	1504 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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1308 / 1504 page

Section 28 Power-Down Modes

Rev. 2.00 Sep. 24, 2008 Page 1276 of 1468

REJ09B0412-0200

(3)

Deep Software Standby Mode in External Extended Mode (IOKEEP = 0)

Figure 28.6 shows an example of operations in deep software standby mode with the IOKEEP bit

is set to 1 and the OPE bit is cleared to 0 in external extended mode. When the IOKEEP bit is

cleared to 0, retention of the states of pins including the address bus, bus-control signals (

CS0, AS,

RD, HWR, and LWR), data bus, and other pins including Bφ output is released after the

oscillation settling time has elapsed.

SLEEP

instruction

Deep software standby mode

(power-down mode)

Program

execution state

Program

execution state

Reset

exception

handling

Oscillator

NMI

Internal reset

Operated

Retained

Address

Retained

Bus control

Retained

Data

Retained

I/O other than

above

Started from h'00000

Operated

Oscillation

settling time

Figure 28.6 Example of Deep Software Standby Mode Operation in

External Extended Mode (IOKEEP = OPE = 0)

H8SX/1663R Datasheet(PDF) 1308 Page - Renesas Technology Corp

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