h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 1027

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

23A.6.3 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 STS2 to STS0 so that the standby time is at least 8 ms (the
oscillation stabilization time).
Table 23A-5 shows the standby times for different operating frequencies and settings of bits STS2
to STS0.
Table 23A-5 Oscillation Stabilization Time Settings
Using a External Clock: The PLL circuit requires time to stabilize, so the standby time should be
set to a value of 2 ms or more.
STS2 STS1 STS0 Standby Time
0
1
Clearing with the
When the
: Recommended time setting
Section 23A Power-Down Modes [HD64F2636F, HD64F2638F, HD6432636F, HD6432638F,
0
1
0
1
S T B Y
0
1
0
1
0
1
0
1
pin is driven low, a transition is made to hardware standby mode.
S T B Y
8192 states
16384 states
32768 states
65536 states
131072 states
262144 states
Reserved
16 states
(Setting
prohibited)
HD64F2630F, HD6432630F, HD64F2635F, HD6432635F, HD6432634F]
pin
20
MHz
0.41
0.82
1.6
3.3
6.6
—
0.8
13.1 16.4 21.8 26.2 32.8 43.6 65.6
16
MHz
0.51 0.68 0.8
1.0
2.0
4.1
—
1.0
8.2
12
MHz
1.3
2.7
5.5
—
1.3
10.9 13.1 16.4 21.8 32.8
Rev. 6.00 Feb 22, 2005 page 967 of 1484
10
MHz
1.6
3.3
6.6
—
1.6
8
MHz
1.0
2.0
4.1
—
2.0
8.2
6
MHz
1.3
2.7
5.5
—
2.6
10.9 16.4
REJ09B0103-0600
4
MHz Unit
2.0
4.1
—
4.0
8.2
ms
µs