參數(shù)資料
型號(hào): HD40A4639R
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): 78/133頁
文件大?。?/td> 803K
代理商: HD40A4639R
HD404639R Series
78
Bit
Initial value
Read/Write
Bit name
3
0
W
ESR23
2
0
W
ESR22
0
0
W
1
0
W
ESR21
Detection edge selection register 2 (ESR2: $027)
ESR23
0
1
ESR22
0
1
0
1
EVND detection edge
No detection
Falling-edge detection
Rising-edge detection
Double-edge detection
Note: Both falling and rising edges are detected.
ESR20
*
ESR21
0
1
ESR20
0
1
0
1
INT detection edge
No detection
Falling-edge detection
Rising-edge detection
Double-edge detection
*
Figure 65 Detection Edge Select Register 2 (ESR2)
Notes on Use
When using the timer output as PWM output, note the following point. From the update of the timer write
register until the occurrence of the overflow interrupt, the PWM output differs from the period and duty
settings, as shown in table 25. The PWM output should therefore not be used until after the overflow
interrupt following the update of the timer write register. After the overflow, the PWM output will have the
set period and duty cycle.
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