參數(shù)資料
型號: M34250M2-XXXFP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 4.4 MHz, MICROCONTROLLER, PDSO20
封裝: PLASTIC, SOP-20
文件頁數(shù): 14/61頁
文件大小: 654K
代理商: M34250M2-XXXFP
18
MITSUBISHI MICROCOMPUTERS
4250 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
EXTERNAL INTERRUPTS
The 4250 Group has an external interrupt. An external interrupt
request occurs when a valid waveform is input to an interrupt
input pin (edge detection).
The external interrupt can be controlled with the key-on wakeup
control register K0.
Table 7 External interrupt activated condition
Name
External interrupt
Input pin
G0/INT
Valid waveform
Falling waveform (“H”
→“L”)
Rising waveform (“L”
→“H”)
Valid waveform selection bit(K02)
1
0
Fig. 17 External interrupt circuit structure
OGA instruction
D
T
Q
IAG instruction
Register A
A0
PU00
G0/INT pin
Pull-up transistor
EXF0
Key-on wakeup
input
K02
0
1
Falling
Rising
External interrupt
(Note)
This symbol represents a
parasitic diode.
Note:
Applied potential to port G0 must be VDD
or less.
One-sided
edge detection
circuit
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