參數(shù)資料
型號: HD404369S
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer
中文描述: 4位HMCS400系列微機
文件頁數(shù): 59/115頁
文件大?。?/td> 452K
代理商: HD404369S
HD404369 Series
59
Timer counter B
(TCB)
I
÷
2
÷
4
÷
8
÷
3
÷
1
÷
5
÷
2
Timer mode
register B2
(TMB2)
EVNB
Selector
System
clock
PER
Prescaler S (PSS)
2
Edge
detector
Edge detection control signal
3
Timer mode
register B1
(TMB1)
Clock
Input capture
timer control
signal
Timer read
register B lower
(TRBL)
Interrupt request
flag of timer B
(IFTB)
Timer read
register B upper
(TRBU)
Overflow
Read
signal
Input capture
status flag
(ICSF)
Input capture
error flag
(ICEF)
Error
controller
Figure 39 Timer B Input Capture Operation Block Diagram
Registers for Timer B Operation:
By using the following registers, timer B operation modes are selected
and the timer B count is read and written.
Timer mode register B1 (TMB1: $009)
Timer mode register B2 (TMB2: $026)
Timer write register B (TWBL: $00A, TWBU: $00B)
Timer read register B (TRBL: $00A, TRBU: $00B)
Port mode register B (PMRB: $024)
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