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2 low-power control register (lpwrcr) – Renesas H8S/2111B User Manual

Page 499

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Rev. 1.00, 05/04, page 465 of 544

Table 20.1 Operating Frequency and Wait Time

STS2 STS1 STS0 Wait Time

10 MHz

8 MHz

6 MHz

4 MHz

Unit

0 0 0 8192

states

0.8 1.0 1.3 20.

0 0 1 16384

states

1.6 2.0 2.7 4.1

0 1 0 32768

states 3.3 4.1 5.5 8.2

0 1 1 65536

states

6.6 8.2

10.9

16.4

1 0 0 131072

states 13.1

16.4 21.8 32.8

1 0 1 262144

states 26.2 32.8 43.6 65.6

1 1 0 Reserved

1 1 1 Reserved

ms

Shaded cells indicate the recommended specification.

20.1.2

Low-Power Control Register (LPWRCR)

LPWRCR controls power-down modes.

Bit Bit

Name

Initial
Value R/W Description

7

DTON

0

R/W

Direct Transfer On Flag

Specifies the operating mode to be entered after
executing the SLEEP instruction.

When the SLEEP instruction is executed in high-speed
mode or medium-speed mode:

0: Shifts to sleep mode, software standby mode, or

watch mode

1: Shifts directly to subactive mode, or shifts to sleep

mode or software standby mode

When the SLEEP instruction is executed in subactive
mode:

0: Shifts to subsleep mode or watch mode

1: Shifts directly to high-speed mode, or shifts to

subsleep mode

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