HD404374 Datasheet, PDF (73/161 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip A/D Converter

HD404374/HD404384/HD404389/HD404082/HD404084 Series
Timer B
Timer B Functions: Timer B has the following functions.
• Free-running/reload timer
• External event counter
• Timer output operation (toggle output, PWM output)
The block diagram of timer B is shown in figure 34.
Timer C clock source
TOB
EVNB
Timer output
control logic
1
Edge detection
logic
2
System ^øPER
clock
÷2
÷4
÷8
÷32
÷128
÷512
÷2048
3
Timer mode
register B1
(TMB1)
3
Timer B ineterrupt
request flag
(IFTB)
Timer read
register BL
(TRBL)
4
Timer read
register BU
(TRBU)
Timer counter B
(TCBL)
(TCBU)
4
4
Timer write register B
(TWBL)
(TWBU)
Data bus
Clock line
Signal line
Timer mode
register B2
(TMB2)
Figure 34 Timer B Block Diagram
Rev.5.00, Sep.11.2003, page 73 of 161