hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 120

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

5.3.3
Bits STS2 to STS0 in SYSCR1 should be set as follows.
• When a crystal oscillator is used
The table below gives settings for various operating frequencies. Set bits STS2 to STS0 for a
waiting time at least as long as the oscillation settling time.
Table 5.4
STS2
0
0
0
0
1
1
1
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 waiting time completion.
Oscillator Settling Time after Standby Mode is Cleared
STS1
0
0
1
1
0
0
1
1
Clock Frequency and Settling Time (times are in ms)
STS0
0
1
0
1
0
1
0
1
Waiting Time
8,192 states
16,384 states
32,768 states
65,536 states
131,072 states
2 states
(Use prohibited)
8 states
16 states
2 MHz
4.1
8.2
16.4
32.8
65.5
0.001
0.004
0.008
1 MHz
8.2
16.4
32.8
65.5
131.1
0.002
0.008
0.016
0.5 MHz
16.4
32.8
65.5
131.1
262.1
0.004
0.016
0.032
105