r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1141

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

(3)
Bits STS3 to STS0 in SBYCR should be set as described below.
• Using a Crystal Resonator:
• Using an External Clock:
Table 24.2 Oscillation Stabilization Time Settings
Note:
STS3 STS2 STS1 STS0
0
1
Set bits STS3 to STS0 so that the standby time is more than the oscillation stabilization time.
Table 24.2 shows the standby times for operating frequencies and settings of bits STS3 to
STS0.
A PLL circuit stabilization time is necessary. See table 24.2 to set the wait time.
Setting Oscillation Stabilization Time after Clearing Software Standby Mode
0
1
0
1
*
φ is the frequency divider output.
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Standby
Time
Reserved
Reserved
Reserved
Reserved
Reserved
64
512
1024
2048
4096
16384
32765
65536
131072
262144
524288
33





1.9
15.5
31.0
62.1
0.12
0.50
0.99
1.99
3.97
7.94
15.89
25





2.6
20.5
41.0
81.9
0.16
0.66
1.31
2.62
5.24
10.49
20.97
20





3.2
25.6
51.2
102.4
0.20
0.82
1.64
3.28
6.55
13.11
26.21
Rev. 1.00 Sep. 19, 2008 Page 1113 of 1270
φ* [MHz]
13





4.9
39.4
78.8
157.5
0.32
1.26
2.52
5.04
10.08
20.16
40.33
Section 24 Power-Down Modes
10





6.4
51.2
102.4
204.8
0.41
1.64
3.28
6.55
13.11
26.21
52.43
REJ09B0466-0100
8





8.0
64.0
128.0
256.0
0.51
2.05
4.10
8.19
16.38
32.77
65.54
Unit
µs
ms