Hitachi H8/3152 Hardware Manual page 130

SYSCR System Control Register
Bit 7
—
0
Initial value
R
Read/Write
TCWA Timer Counter Write Address
Bit 7
IA15
1
Initial value
Read/Write R/W
6 5
— —
0
0
R R
6 5
IA14 IA13
1 1
R/W R/W
Instruction Address
4 3
— —
0 0
R R
0
1
4 3
IA12 —
1 1
R/W R
0
1
Clock Pulse Generator
2 1
— — CPUCS0
0 0
R/W
R R
CPU Clock Select 0
One-half frequecny
of the external clock
External clock frequency
2 1
— — WAD
1 1
R R R/W
Write Address Disable
TCWA operates
TCWA does not operate
0
0
WDT
0
1
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