參數(shù)資料
型號(hào): HS4318ESS01H
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-series microcomputer
中文描述: 4位HMCS400系列微機(jī)
文件頁數(shù): 32/66頁
文件大小: 305K
代理商: HS4318ESS01H
HD404318 Series
32
System
clock
Selector
Prescaler S (PSS)
I
Timer A interrupt
request flag
(IFTA)
Overflow
Timer
counter A
(TCA)
Timer mode
register A
(TMA)
3
PER
2
÷
4
÷
8
÷
3
÷
1
÷
5
÷
1
÷
2
÷
Figure 22 Timer A Block Diagram
Bit
Initial value
Read/Write
Bit name
3
Not used
2
0
W
TMA2
0
0
W
TMA0
1
0
W
TMA1
Timer mode register A (TMA: $008)
0
0
1
0
1
0
1
0
1
0
1
PSS
PSS
PSS
PSS
PSS
PSS
PSS
PSS
TMA1
TMA2
TMA0
Source
Prescaler
Input clock
frequency
0
1
1
2048t
cyc
1024t
cyc
512t
cyc
128t
cyc
32t
cyc
8t
cyc
4t
cyc
2t
cyc
Figure 23 Timer Mode Register A (TMA)
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