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HARDWARE CONFIGURATION
2-11
MAIN/SUBCLOCK
CONTROL BLOCK
2.2 MAIN/SUB CLOCK CONTROL BLOCK
This block controls the standby operation, oscillation stabilization time,
software reset, and clock switching.
Block Diagram
Selector
CS0
CS1
SCS
STP
SLP
TMD
SPL
SCM
Main clock
pulse generator
Prescaler
1/2
1/4
1/8
1/32
Selector
Clock
control
WT1
WT0
Pin state
Watch
Sleep
Stop
Clock
specification
CPU operation clock
Resource operation clock
Clock for time-base timer
Clock for watch prescaler
Selector
HC1
HC2
HC3
HC4
LC from watch
Stop release signal
Subclock
pulse generator
From time-
base timer
Ready signal
Hold request signal
Hold acknowledge signal
Fig. 2.8 Machine Clock Control Block Diagram
Register List
Main/sub clock control block consists of standby control register (STBC)
and system clock control register (SYCC).
Address: 0007
H
Address: 0008
H
SYCC
STBC
R/W System clock control register
R/W Standby control register
8 bit
Summary of Contents for F2MC-8L Series
Page 121: ...INSTRUCTIONS 4 7 4 5 F2MC 8L FAMILY INSTRUCTION MAP ...
Page 123: ...5 MASK OPTIONS ...
Page 125: ...APPENDIX ...