Renesas H8 Series Hardware Manual page 171

• 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)
STS2 STS1 STS0
0 0 0
1
1 0
1
1 0 0
1
1 0
1
Table 5.4(2) Clock Frequency and Stabilization Time (H8/38124 Group)
STS2 STS1 STS0
0 0 0
1
1 0
1
1 0 0
1
1 0
1
• 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.
Wait Time
8,192 states
16,384 states
1,024 states
2,048 states
4,096 states
2 states
(Use prohibited with other than
external clock)
8 states
16 states
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
Section 5 Power-Down Modes
5 MHz
1.638
3.277
0.205
0.410
0.819
0.0004
0.002
0.003
5 MHz
1.638
3.277
6.554
13.108
26.216
0.0004
0.002
0.003
Rev. 7.00 Mar 10, 2005 page 129 of 652
(Unit: ms)
2 MHz
4.1
8.2
0.512
1.024
2.048
0.001
0.004
0.008
(Unit: ms)
2 MHz
4.1
8.2
16.4
32.8
65.5
0.001
0.004
0.008
REJ09B0042-0700