HD64F38024HV Datasheet, PDF (153/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Section 5 Power-Down Modes
• When a oscillator is used
The table below gives settings for various operating frequencies. Set bits STS2 to STS0 for a
wait time at least as long as the oscillation stabilization time.
Table 5.4(1) Clock Frequency and Stabilization Time (H8/38024, H8/38024S,
H8/38024R Group)
(Unit: ms)
STS2 STS1 STS0 Wait Time
5 MHz
2 MHz
0
0
0
8,192 states
1.638
1
16,384 states
3.277
1
0
1,024 states
0.205
1
2,048 states
0.410
1
0
0
4,096 states
0.819
1
2 states
0.0004
(Use prohibited with other than
external clock)
1
0
8 states
0.002
4.1
8.2
0.512
1.024
2.048
0.001
0.004
1
16 states
0.003
0.008
Table 5.4(2) Clock Frequency and Stabilization Time (H8/38124 Group)
STS2
0
1
STS1
0
1
0
1
STS0
0
1
0
1
0
1
0
1
Wait Time
8,192 states
16,384 states
32,768 states
65,536 states
131,072 states
2 states
(Use prohibited with other than
external clock)
8 states
16 states
5 MHz
1.638
3.277
6.554
13.108
26.216
0.0004
0.002
0.003
(Unit: ms)
2 MHz
4.1
8.2
16.4
32.8
65.5
0.001
0.004
0.008
• When an external clock is used
STS2 = 1, STS1 = 0, and STS0 = 1 should be set. Other values possible use, but CPU
sometimes will start operation before wait time completion.
Rev. 8.00 Mar. 09, 2010 Page 131 of 658
REJ09B0042-0800