HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 1164

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Appendix B Internal I/O Registers
SCKCR—System Clock Control Register
Rev.6.00 Sep. 27, 2007 Page 1134 of 1268
REJ09B0220-0600
Bit
Initial value
Read/Write
φ Clock Output Control
PSTOP
:
:
:
0
1
PSTOP
R/W
System Clock Select
7
0
SCK2
0
1
Normal Operation
φ output
Fixed high
Reserved
Only 0 should be
written to this bit
SCK1
R/W
0
1
0
1
—
6
0
SCK0
—
0
1
0
1
0
1
Division
Ratio
Select
R/W
DIV
5
0
Bus master is in high-speed mode
Medium-speed clock is φ /2
Medium-speed clock is φ /4
Medium-speed clock is φ /8
Medium-speed clock is φ /16
Medium-speed clock is φ /32
—
φ output
Fixed high
—
—
Sleep Mode
4
0
DIV = 0
—
—
3
0
H'FF3A
SCK2
R/W
2
0
Standby Mode
Fixed high
Fixed high
Software
Bus master is in high-speed mode
Clock supplied to entire chip is φ /2
Clock supplied to entire chip is φ /4
Clock supplied to entire chip is φ /8
—
—
—
SCK1
R/W
1
0
Clock Pulse Generator
SCK0
DIV = 1
R/W
0
0
High impedance
High impedance
Standby Mode
Hardware