Datasheet
Section 24 Power-Down Modes
Rev. 6.00 Mar. 18, 2010 Page 784 of 982
REJ09B0054-0600
Table 24.1 LSI Internal States in Each Mode
Function
High-
Speed
Medium-
Speed
Sleep
Module
Stop
Watch
Sub
active
Subsleep
Software
Standby
Hardware
Standby
System clock pulse
generator
Function-
ing
Function-
ing
Function-
ing
Function-
ing
Halted Halted Halted Halted Halted
Subclock pulse
generator
Function-
ing/halted
Function-
ing/halted
Function-
ing/halted
Function-
ing/halted
Function-
ing
Function-
ing
Function-
ing
Function-
ing/halted
Halted
CPU Instruc-
tions
Halted Halted Halted Halted Halted
Registers
Function-
ing
Medium-
speed
operation
Retained
Function-
ing
Retained
Subclock
operation
Retained Retained Undefined
RAM Function-
ing
Function-
ing
Function-
ing (DTC)
Function-
ing
Retained Function-
ing
Retained Retained Retained
I/O Function-
ing
Function-
ing
Function-
ing
Function-
ing
Retained Function-
ing
Function-
ing
Retained High
impedance
NMI External
interrupts
IRQn
Function-
ing
Function-
ing
Function-
ing
Function-
ing
Function-
ing
Function-
ing
Function-
ing
Function-
ing
Halted
Peripheral
functions
PBC Function-
ing
Medium-
speed
operation
Function-
ing
Function-
ing/halted
(retained)
Halted
(retained)
Subclock
operation
Halted
(retained)
Halted
(retained)
Halted
(reset)
DTC
DMAC
*
1
Function-
ing
Medium-
speed
operation
Function-
ing
Function-
ing/halted
(retained)
Halted
(retained)
Halted
(retained)
Halted
(retained)
Halted
(retained)
Halted
(reset)
WDT_1 Function-
ing
Function-
ing
Function-
ing
Function-
ing
Subclock
operation
Subclock
operation
Subclock
operation
Halted
(retained)
Halted
(reset)
WDT_0 Function-
ing
Function-
ing
Function-
ing
Function-
ing
Halted
(retained)
Subclock
operation
Subclock
operation
Halted
(retained)
Halted
(reset)
TMR Function-
ing
Function-
ing
Function-
ing
Function-
ing/halted
(retained)
Halted
(retained)
Subclock
operation
Subclock
operation
Halted
(retained)
Halted
(reset)
TPU
SCI
I
2
C
*
2
D/A
*
3
*
5
Function-
ing
Function-
ing
Function-
ing
Function-
ing/halted
(retained)
Halted
(retained)
Halted
(retained)
Halted
(retained)
Halted
(retained)
Halted
(reset)
A/D
IEB
*
4
Function-
ing
Function-
ing
Function-
ing
Function-
ing/halted
(reset)
Halted
(reset)
Halted
(reset)
Halted
(reset)
Halted
(reset)
Halted
(reset)
Notes: “Halted (retained)” means that internal register values are retained. The internal state is
“operation suspended”.
“Halted (reset)” means that internal register values and internal states are initialized.
In module stop mode, only modules for which a stop setting has been made are halted
(reset or retained).
1. Supported only by the H8S/2239 Group.
2. Not available in the H8S/2237 Group and H8S/2227 Group.
3. Not available in the H8S/2227 Group.