參數(shù)資料
型號: HD404638R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位單片機(jī)(4位單片微計(jì)算機(jī))
文件頁數(shù): 61/133頁
文件大?。?/td> 803K
代理商: HD404638R
HD404639R Series
61
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 42.
System
clock
EVNB
TOB
Timer output control
Selector
Prescaler S (PSS)
Clock
Timer read register BU (TRBU)
Timer read
register BL
(TRBL)
Timer counter B
(TCB)
Timer write
register BU
(TWBU)
Timer write
register BL
(TWBL)
Timer mode
register B1
(TMB1)
Timer mode
register B2
(TMB2)
Timer B interrupt
request flag
(IFTB)
PER
3
2
I
2
÷
4
÷
8
÷
3
÷
1
÷
5
÷
2
÷
Free-running/
Reload control
Overflow
Timer output
control logic
Figure 42 Block Diagram of Timer B
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