Section 28
Power-Down Modes
Rev. 1.00 Mar. 12, 2008 Page 1059 of 1178
REJ09B0403-0100
Bit Bit
Name
Initial
Value
R/W Description
6
5
4
STS2
STS1
STS0
0
0
0
R/W
R/W
R/W
Standby Timer Select 2 to 0
Select the wait time for clock settling from clock oscillation
start when canceling software standby mode. Select a
wait time of 8 ms (oscillation settling time) or more,
depending on the operating frequency.
With an external clock, select a wait time of 500
µ
s
(external clock output settling delay time) or more,
depending on the operating frequency.
Table 28.1 shows the relationship between the STS2 to
STS0 values and wait time.
3 DTSPEED
0 R/W
DTC
Speed
Specifies the operating clock for the bus masters (DTC)
other than the CPU in medium-speed mode.
0: All bus masters operate based on the medium-speed
clock.
1: The DTC operates based on the system clock.
The operating clock is changed when a DTC transfer is
requested even if the CPU operates based on the
medium-speed clock.
2
1
0
SCK2
SCK1
SCK0
0
0
0
R/W
R/W
R/W
System Clock Select 2 to 0
Select a clock for the bus master in high-speed mode or
medium-speed mode.
000: High-speed mode (Initial value)
001: Medium-speed clock:
φ
/2
010: Medium-speed clock:
φ
/4
011: Medium-speed clock:
φ
/8
100: Medium-speed clock:
φ
/16
101: Medium-speed clock:
φ
/32
11x: Must not be set.
[Legend]
x: Don't
care
Содержание H8S Family
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Страница 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Страница 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Страница 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Страница 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Страница 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Страница 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
Страница 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Страница 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Страница 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Страница 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Страница 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Страница 1168: ...Section 30 Platform Environment Control Interface PECI Rev 1 00 Mar 12 2008 Page 1120 of 1178 REJ09B0403 0100...
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Страница 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...