參數(shù)資料
型號: UPD784035YGK
廠商: NEC Corp.
英文描述: 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16-/8-bit的單晶片微控制器
文件頁數(shù): 45/94頁
文件大?。?/td> 503K
代理商: UPD784035YGK
45
μ
PD784035Y, 784036Y, 784037Y, 784038Y
7.10 Edge Detection Function
The interrupt input pins (NMI and INTP0 through INTP5) are used not only to input interrupt requests but also to
input trigger signals to the internal hardware units. Because these pins operate at an edge of the input signal, they
have a function to detect an edge. Moreover, a noise reduction circuit is also provided to prevent erroneous detection
due to noise.
Pin Name
Detectable Edge
Noise Reduction
NMI
Either of rising or falling edge
By analog delay
INTP0-INTP3
Either or both of rising and falling edges
By clock sampling
Note
INTP4, INTP5
By analog delay
Note
INTP0 can select a sampling clock.
7.11 Watchdog Timer
A watchdog timer is provided to detect a hang up of the CPU. This watchdog timer generates a non-maskable
interrupt unless it is cleared by software within a specified interval time. Once enabled to operate, the watchdog timer
cannot be stopped by software. Whether the interrupt by the watchdog timer or the interrupt input from the NMI pin
takes precedence can be specified.
Figure 7-14. Block Diagram of Watchdog Timer
S
f
CLK
/2
21
f
CLK
/2
20
f
CLK
/2
19
f
CLK
/2
17
f
CLK
Clear signal
Timer
INTWDT
相關PDF資料
PDF描述
UPD784035Y 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784037Y 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784038Y 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784037YGK TRANS PREBIASED DUAL NPN SOT363
UPD784038YGC RECT BRIDGE GPP 800V 1.5A KBP
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