h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 550

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21 Power-Down Modes
21.4.3
Bits STS2 to STS0 in SBYCR should be set as described below.
Table 21.3 Oscillation Stabilization Time Settings
Note:
Rev. 3.00 Oct 04, 2005 page 510 of 598
REJ09B0155-0300
STS2 STS1 STS0 Standby Time
0
1
Using a Crystal Oscillator:
Set bits STS2 to STS0 so that the standby time is at least 8 ms (the oscillation settling time).
Table 21.3 shows the standby times for different operating frequencies and settings of bits
STS2 to STS0.
Using an External Clock
The PLL circuit requires a time for settling. Set bits STS2 to STS0 so that the standby time is
at least 2 ms(the oscillation settling time).
: Recommended time setting
0
1
0
1
*
Setting Oscillation Stabilization Time after Clearing Software Standby Mode
Cannot be used in this LSI.
0
1
0
1
0
1
0
1
8,192 states
16,384 states
32,768 states
65,536 states
131,072 states
262,144 states
Reserved
16 states *
24
MHz
0.34 0.41 0.51 0.68 0.8
0.68 0.82 1.0
1.4
2.7
5.5
10.9 13.1 16.4 21.8 26.2 32.8 43.6 65.6
0.7
20
MHz
1.6
3.3
6.6
0.8
2.0
4.1
16
MHz
8.2
1.0
12
MHz
1.3
2.7
5.5
10.9 13.1 16.4 21.8 32.8
1.3
10
MHz
1.6
3.3
6.6
1.6
8
MHz
1.0
2.0
4.1
8.2
2.0
6
MHz
1.3
2.7
5.5
10.9 16.4
1.7
4
MHz Unit
2.0
4.1
8.2
4.0
ms
µs