HD404618 Datasheet, PDF (46/89 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404618 Series
Watchdog on
flag (WDON)
System
reset signal
Watchdog timer
control logic
Timer C interrupt
request flag
(IFTC)
TIMO
Timer output
control logic
Timer counter register CU (TCCU)
Selector
System ^fcyc/fSUB
clock _{(tcyc/tsubcyc)}
Prescaler S (PSS)
Clock
Timer counter
register CL
(TCCL)
Timer counter C
(TCC)
Overflow
Timer load
register CU
(TCRU)
Free-running
/Reload control
Timer load
register CL
(TCRL)
3
Timer mode
register C
(TMC)
Figure 28 Timer C Block Diagram
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