參數(shù)資料
型號： M3826AMFLXXXGP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù)： 17/68頁
文件大?。?/td> 1169K
代理商： M3826AMFLXXXGP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3826 Group
24
Key Input Interrupt (Key-on Wake Up)
A Key-on wake up interrupt request is generated by applying “L”
level voltage to any pin of port P2 that have been set to input
mode. In other words, it is generated when AND of input level
goes from “1” to “0”. An example of using a key input interrupt is
shown in Figure 19, where an interrupt request is generated by
pressing one of the keys consisted as an active-low key matrix
which inputs to ports P20–P23.
Fig. 19 Connection example when using key input control register, key input interrupt and port P2 block diagram
Port P20
latch
Port P20
direction register = “0”
Port P21
latch
Port P21
direction register = “0”
Port P22
latch
Port P22
direction register = “0”
Port P23
latch
Port P23
direction register = “0”
Port P24
latch
Port P24
direction register = “1”
Port P25
latch
Port P25
direction register = “1”
Port P26
latch
Port P26
direction register = “1”
Port P27
latch
Port P27
direction register = “1”
P20 input
P21 input
P22 input
P23 input
P24 output
P25 output
P26 output
P27 output
PULL register A
Bit 2 = “1”
Port P2
Input reading circuit
Port PXx
“L” level output
P-channel transistor for pull-up
CMOS output buffer
Key input interrupt request
Key input control register = “1”
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
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M3826-BK005 制造商:Alpha Wire 功能描述:
M3826-BK199 制造商:Alpha Wire 功能描述:
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