HD404629R Datasheet, PDF (70/157 Pages) Renesas Technology Corp – AS Microcomputer Incorporating a DTMF Generator Circuit

HD404629R Series
Timer C
Timer C Functions: Timer C has the following functions.
• Free-running/reload timer
• Watchdog timer
• Timer output operation (toggle, 0, 1, and PWM outputs)
The block diagram of timer C is shown in figure 54.
TOC
Watchdog on
flag
(WDON)
Timer output
control logic
System reset signal
Watchdog timer
control logic
Timer C
interrupt request
flag
(IFTC)
System
clock
ø _PER
÷2
÷4
÷8
Prescalers ÷ 32
(PSS) _{÷ 128 Selector}
÷ 512
÷ 1024
÷ 2048
3
Timer mode
register C1
(TMC1)
3
Timer read
register CL
(TRCL)
Timer read
register CU
(TRCU)
4
Timer counter C
(TCCL)
(TCCU)
4
4
Timer write register C
(TWCL)
(TWCU)
Timer output
control
Data bus
Clock line
Signal line
Timer mode
register C2
(TMC2)
Figure 54 Block Diagram of Timer C
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