hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 183

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

5.9
5.9.1
Module standby mode is set for individual peripheral functions. All the on-chip peripheral
modules can be placed in module standby mode. When a module enters module standby mode,
the system clock supply to the module is stopped and operation of the module halts. This state is
identical to standby mode.
Module standby mode is set for a particular module by setting the corresponding bit to 0 in clock
stop register 1 (CKSTPR1) or clock stop register 2 (CKSTPR2). (See table 5.5.)
5.9.2
Module standby mode is cleared for a particular module by setting the corresponding bit to 1 in
clock stop register 1 (CKSTPR1) or clock stop register 2 (CKSTPR2). (See table 5.5.)
Following a reset, clock stop register 1 (CKSTPR1) and clock stop register 2 (CKSTPR2) are both
initialized to H'FF.
Table 5.5
Register Name
CKSTPR1
Setting Module Standby Mode
Clearing Module Standby Mode
Module Standby Mode
Setting and Clearing Module Standby Mode by Clock Stop Register
Bit Name
TACKSTP
TCCKSTP
TFCKSTP
TGCKSTP
ADCKSTP
S32CKSTP
1
0
1
0
1
0
1
0
1
0
1
0
Timer F module standby mode is cleared
Operation
Timer A module standby mode is cleared
Timer A is set to module standby mode
Timer C module standby mode is cleared
Timer C is set to module standby mode
Timer F is set to module standby mode
Timer G module standby mode is cleared
Timer G is set to module standby mode
A/D converter module standby mode is cleared
A/D converter is set to module standby mode
SCI3 module standby mode is cleared
SCI3 is set to module standby mode
Rev. 7.00 Mar 10, 2005 page 141 of 652
Section 5 Power-Down Modes
REJ09B0042-0700