HD404829R Datasheet, PDF (63/149 Pages) Renesas Technology Corp – AS Microcomputer Incorporating a LCD controller/Driver Circuit

Timer B
Timer B Functions: Timer B has the following functions.
• Free-running/reload timer
• External event counter
• Timer output operation (toggle, 0, and 1 outputs)
The block diagram of timer B is shown in figure 45.
HD404829R Series
TOB
Timer output
control logic
Timer B ineterrupt
request flag
(IFTB)
EVNB
System ^φPER
clock
÷2
÷4
÷8
÷32
÷128
÷512
÷2048
3
Timer read
register BL
(TRBL)
4
Timer read
register BU
(TRBU)
Timer counter B
(TCBL)
(TCBU)
4
4
Timer counter B
(TWBL)
(TWBU)
Timer mode
register B1
(TMB1)
2
Edge detection
control
Data bus
Clock line
Signal line
Timer mode
register B2
(TMB2)
Figure 45 Block Diagram of Timer B
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