Section 5 Power-Down Modes
Rev. 7.00 Mar 10, 2005 page 121 of 652
REJ09B0042-0700
Table 5.2 Internal State in Each Operating Mode
Active Mode Sleep Mode
Function
High-
Speed
Medium-
Speed
High-
Speed
Medium-
Speed
Watch
Mode
Subactive
Mode
Subsleep
Mode
Standby
Mode
System clock oscillator Functions Functions Functions Functions Halted Halted Halted Halted
Subclock oscillator Functions Functions Functions Functions Functions Functions Functions Functions
Instructions Functions Functions Halted Halted Halted Functions Halted Halted
CPU
operations
RAM Retained Retained Retained Retained Retained
Registers
I/O ports Retained
*
1
IRQ
0
Functions Functions Functions Functions Functions Functions Functions Functions
External
interrupts
IRQ
1
Retained
*
6
IRQAEC Retained
*
6
IRQ
3
IRQ
4
WKP
0
Functions Functions Functions Functions Functions Functions Functions Functions
WKP
1
WKP
2
WKP
3
WKP
4
WKP
5
WKP
6
WKP
7
Timer A Functions Functions Functions Functions Functions
*
5
Functions
*
5
Functions
*
5
Retained
Peripheral
functions
Asynchronous
event counter
Functions
*
8
Functions Functions Functions
*
8
Timer C Retained
Functions/
Retained
*
2
Functions/
Retained
*
2
Retained
WDT
Functions/
Retained
*
10
Functions/
Retained
*
7
Functions/
Retained
*
10
Functions/
Retained
*
11
Timer F
Timer G
Functions/
Retained
*
9
Functions/
Retained
*
9
Functions/
Retained
*
9
Retained
SCI3 Reset
Functions/
Retained
*
3
Functions/
Retained
*
3
Reset
PWM Retained Retained Retained Retained
A/D converter Retained Retained Retained Retained
LCD Functions/
Retained
*
4
Functions/
Retained
*
4
Functions/
Retained
*
4
Retained
LVD Functions Functions Functions Functions Functions Functions Functions Functions
Notes: 1. Register contents are retained, but output is high-impedance state. Port 5 of the HD64F38024 retains the previous
pin state.
2. Functions if an external clock or the φ
W
/4 internal clock is selected; otherwise halted and retained.
3. Functions if φ
W
/2 is selected as the internal clock; otherwise halted and retained.
4. Functions if φ
W
, φ
W
/2 or φ
W
/4 is selected as the operating clock; otherwise halted and retained.
5. Functions if the timekeeping time-base function is selected.
6. External interrupt requests are ignored. Interrupt request register contents are not altered.
7. On the H8/38124 Group, operates when φ
W
/32 is selected as the internal clock or the on-chip oscillator is selected;
otherwise stops and stands by. On the H8/38024, H8/38024S, and H8/38024R Group, operates when φ
W
/32 is
selected as the internal clock; otherwise stops and stands by.
8. Incrementing is possible, but interrupt generation is not.
9. Functions if φ
W
/4 is selected as the internal clock; otherwise halted and retained.
10. On the H8/38124 Group, operates when φ
W
/32 is selected as the internal clock or the on-chip oscillator is selected;
otherwise stops and stands by. On the H8/38024, H8/38024S, and H8/38024R Group, stops and stands by.
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