h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 1042
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h8s-2635
Manufacturer Part Number
h8s-2635
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2635.pdf
(1547 pages)
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Section 23B Power-Down Modes [HD64F2636UF, HD6432636UF, HD64F2638UF,
HD6432638UF, HD64F2638WF, HD6432638WF, HD64F2639UF, HD6432639UF, HD64F2639WF,
HD6432639WF, HD64F2630UF, HD6432630UF, HD64F2630WF, HD6432630WF]
Bits 6 to 4—Reserved: These bits are always read as 0 and cannot be modified.
Bit 3—Frequency Multiplication Factor Switching Mode Select (STCS): Selects the operation
when the PLL circuit frequency multiplication factor is changed.
Bits 2 to 0—System Clock Select (SCK2 to SCK0): These bits select the bus master clock in
high-speed mode, medium-speed mode, and subactive mode.
Set SCK2 to SCK0 all to 0 when shifting to operation in watch mode or subactive mode.
Rev. 6.00 Feb 22, 2005 page 982 of 1484
REJ09B0103-0600
Bit 3
STCS
0
1
Bit 2
SCK2
0
1
Bit 1
SCK1
0
1
0
1
Description
Specified multiplication factor is valid after transition to software standby mode, watch
mode, or subactive mode
Specified multiplication factor is valid immediately after STC bits are rewritten
Bit 0
SCK0
0
1
0
1
0
1
—
Description
Bus master in high-speed mode
Medium-speed clock is /2
Medium-speed clock is /4
Medium-speed clock is /8
Medium-speed clock is /16
Medium-speed clock is /32
—
(Initial value)
(Initial value)
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