Section 27 Power-Down Modes
Rev. 3.00 Jan 25, 2006 page 774 of 872
REJ09B0286-0300
Table 27.1 Operating Frequency and Wait Time
STS2
STS1
STS0
Wait Time
24M Hz 20 MHz 10 MHz 8 MHz
6 MHz
Unit
0
0
0
8192 states
0.3
0.4
0.8
1.0
1.3
0
0
1
16384 states
0.7
0.8
1.6
2.0
2.7
0
1
0
32768 states
1.3
2.0
3.3
4.1
5.5
0
1
1
65536 states
2.7
4.1
6.6
8.2
10.9
1
0
0
131072 states
5.5
8.2
13.1
16.4
21.8
1
0
1
262144 states
10.9
16.4
26.2
32.8
43.6
ms
1
1
0
Reserved
1
1
1
16 states
*
0.7
0.8
1.6
2.0
2.7
µ
s
Recommended specification
Note:
*
This setting cannot be made in the flash-memory version of this LSI.
27.1.2
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
Содержание H8S/2158
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Страница 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Страница 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Страница 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Страница 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...