h8s2277 Renesas Electronics Corporation., h8s2277 Datasheet - Page 760

• Manufacturer Part Number: h8s2277
• Description: Hitachi Single-chip Microcomputer H8s/2276 Series
• Manufacturer: Renesas Electronics Corporation.

SCKCR—System Clock Control Register
Bit
Initial value
R/W
MDCR—Mode Control Register
738
Bit
Initial value
R/W
Note: * Determined by pins MD2 to MD0.
:
:
:
:
:
:
PSTOP
R/W
ø Clock Output Control
PSTOP
7
0
—
—
7
1
0
1
R/W
High-Speed
Mode, Medium-
Speed Mode,
Subactive Mode
—
Reserved
Only 0 should be written
to these bits
6
0
Fixed high
ø output
—
—
6
0
R/W
—
5
0
—
—
5
0
Sleep Mode,
Subsleep Mode
Fixed high
ø output
R/W
—
4
0
—
—
4
0
R/W
—
3
0
Software
Standby Mode,
Watch Mode,
Direct Transition
Bus Master Clock Select
H'FDE6
H'FDE7
0
1
—
—
Fixed high
Fixed high
3
0
0
1
0
1
SCK2
—
Current mode pin operating mode
0
1
0
1
0
1
R/W
2
0
MDS2
Bus master is in high-speed mode
Medium-speed clock is ø/2
Medium-speed clock is ø/4
Medium-speed clock is ø/8
Medium-speed clock is ø/16
Medium-speed clock is ø/32
—
—*
R
2
Hardware
Standby Mode
High impedance
High impedance
SCK1
Clock Pulse Generator
R/W
1
0
MDS1
—*
R
1
SCK0
R/W
0
0
MDS0
—*
R
0
MCU