h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 1046

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 23B Power-Down Modes [HD64F2636UF, HD6432636UF, HD64F2638UF,
HD6432638UF, HD64F2638WF, HD6432638WF, HD64F2639UF, HD6432639UF, HD64F2639WF,
HD6432639WF, HD64F2630UF, HD6432630UF, HD64F2630WF, HD6432630WF]
Bit 4—Prescaler Select (PSS): This bit selects the clock source input to WDT1 TCNT.
It also controls operation when shifting low power dissipation modes. The operating mode
selected after the SLEEP instruction is executed is determined in combination with other control
bits.
For details, see the description for clock selection in section 12.2.2, Timer Control/Status Register
(TCSR), and this section.
Notes: 1. Always set high-speed mode when shifting to watch mode or subactive mode.
Rev. 6.00 Feb 22, 2005 page 986 of 1484
REJ09B0103-0600
Bit 4
PSS
0
1
2. Bit 4 (PSS) in TCSR of WDT1 is valid in the U-mask and W-mask versions, and
Description
H8S/2635 Group. In versions other than the U-mask and W-mask versions, and
H8S/2635 Group, however, the PSS bit must always be written with 0 since no subclock
functions are available.
TCNT counts the divided clock from the
When the SLEEP instruction is executed in high-speed mode or medium-speed
mode, operation shifts to sleep mode or software standby mode.
TCNT counts the divided clock from the subclock-based prescaler (PSS).
When the SLEEP instruction is executed in high-speed mode or medium-speed
mode, operation shifts to sleep mode, watch mode *
When the SLEEP instruction is executed in subactive mode *
subsleep mode *
2
, watch mode *
2
, or high-speed mode.
-based prescaler (PSM).
1
*
2
, or subactive mode *
2
, operation shifts to
(Initial value)
1
*
2
.