HD6417750RF240V Datasheet, PDF (533/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 20 Power-Down Modes
20.4.3 Setting Oscillation Stabilization Time after Clearing Software Standby Mode
Bits STS2 to STS0 in SBYCR should be set as described below.
• Using a Crystal Oscillator:
Set bits STS0 to STS2 so that the standby time is at least 8 ms (the oscillation stabilization
time).
Table 20.3 shows the standby times for different operating frequencies and settings of bits
STS0 to STS2.
• Using an External Clock:
The PLL circuit requires a time for stabilization. Set bits STS0 to STS2 so that the standby
time is at least 2 ms.
Table 20.3 Oscillation Stabilization Time Settings
STS2 STS1 STS0 Standby Time
0
0
0
8192 states
1
16384 states
1
0
32768 states
1
65536 states
1
0
0
131072 states
1
262144 states
1
0
Reserved
1
16 states^*
: Recommended time setting
Note: * Setting prohibited
20 16 12 10 8
6
4
MHz MHz MHz MHz MHz MHz MHz Unit
0.41 0.51 0.68 0.8 1.0 1.3 2.0 ms
0.82 1.0 1.3 1.6 2.0 2.7 4.1
1.6 2.0 2.7 3.3 4.1 5.5 8.2
3.3 4.1 5.5 6.6 8.2 10.9 16.4
6.6 8.2 10.9 13.1 16.4 21.8 32.8
13.1 16.4 21.8 26.2 32.8 43.6 65.6
————————
0.8 1.0 1.3 1.6 2.0 1.7 4.0 µs
Rev. 7.00 Sep. 11, 2009 Page 497 of 566
REJ09B0211-0700