參數(shù)資料
型號: HD4046212R
廠商: Hitachi,Ltd.
英文描述: AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機帶雙音多頻發(fā)生器電路)
中文描述: 由于微機安裝有雙音多頻發(fā)電機斷路器(微計算機帶雙音多頻發(fā)生器電路)
文件頁數(shù): 43/155頁
文件大?。?/td> 549K
代理商: HD4046212R
HD404629R Series
43
Notes: 2. When the MCU is in watch mode or subactive mode, if the high level period before the falling
edge of
I NT
0
is shorter than the interrupt frame,
I NT
0
is not detected. Also, if the low level
period after the falling edge of
I NT
0
is shorter than the interrupt frame,
I NT
0
is not detected.
Edge detection is shown in figure 24. The level of the
INT
0
signal is sampled by a sampling
clock. When this sampled value changes to low from high, a falling edge is detected.
In figure 25, the level of the
I NT
0
signal is sampled by an interrupt frame. In (a) the sampled
value is low at point A, and also low at point B. Therefore, a falling edge is not detected. In
(b), the sampled value is high at point A, and also high at point B. A falling edge is not detected
in this case either.
When the MCU is in watch mode or subactive mode, keep the high level and low level period of
INT
0
longer than interrupt frame.
High
Low
INT
Sampling
0
Low
Figure 24 Edge Detection
A: Low
B: Low
INT
Interrupt
frame
0
A: High
B: High
INT
Interrupt
frame
0
(a) High level period
(b) Low level period
Figure 25 Sampling Example
相關(guān)PDF資料
PDF描述
HD404628R AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機帶雙音多頻發(fā)生器電路)
HD4074629 AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機帶雙音多頻發(fā)生器電路)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD4046212RFS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4046212RH 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a DTMF Generator Circuit
HD4046212RTF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4046212TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404628FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller