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| 型号： | M38278EBMXXXHP |
| 厂商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 单芯片8位CMOS微机 |
| 文件页数： | 20/70页 |
| 文件大小： | 1112K |
| 代理商： | M38278EBMXXXHP |
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20
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
3827 Group
MITSUBISHI MICROCOMPUTERS
Key Input Interrupt (Key-on wake-up)
A Key-on wake up interrupt request is generated by applying “L”
level 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
16, where an interrupt request is generated by pressing one of the
keys consisted as an active-low key matrix which inputs to ports
P2
0
–P2
3
.
Fig. 16 Connection example when using key input interrupt and port P2 block diagram
8
88
8
88
8
88
8
88
8
88
8
88
8
88
8
88
Port P2
0
latch
Port P2
0
direction register = “0”
Port P2
1
latch
Port P2
1
direction register = “0”
Port P2
2
latch
Port P2
2
direction register = “0”
Port P2
3
latch
Port P2
3
direction register = “0”
Port P2
4
latch
Port P2
4
direction register = “1”
Port P2
5
latch
Port P2
direction register = “1”
Port P2
6
latch
Port P2
7
latch
Port P2
7
direction register = “1”
Port P2
0
input
Port P2
1
input
Port P2
2
input
Port P2
3
input
Port P2
4
output
Port P2
5
output
Port P2
6
output
Port P2
7
output
PULLA register
Bit 2 = “1”
Port P2 input
reading circuit
Key input interrupt request
Port PXx
“L” level output
8
88
CMOS output buffer
P-channel transistor for pull-up
Key input control register = “1”
Key input control register = “1”
Key input control register = “1”
Key input control register = “1”
Key input control register = “1”
Key input control register = “1”
Key input control register = “1”
Port P2
6
direction register = “1”
Key input control register = “1”
相关PDF资料 |
PDF描述 |
|---|---|
| M38278EC-XXXFP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38278EC-XXXFS | 550-uA/Ch 3-MHz Rail-to-Rail Output Operational Amplifier 8-SOIC -40 to 125 |
| M38278EC-XXXGP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38278EC-XXXHP | 550-uA/Ch 3-MHz Rail-to-Rail Output Operational Amplifier 8-MSOP -40 to 125 |
| M38278ECMXXXFS | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M3828 BK001 | 制造商:Alpha Wire Company 功能描述:CBL 3COND 16AWG BLK 1000' |
| M3828 BK002 | 制造商:Alpha Wire Company 功能描述:CBL 3COND 16AWG BLK 500' |
| M3828 BK005 | 制造商:Alpha Wire Company 功能描述:CBL 3COND 16AWG BLK 100' |
| M3828 BK199 | 制造商:Alpha Wire Company 功能描述:CBL 3COND 16AWG BLK 3000=3000' |
| M3829 BK001 | 制造商:Alpha Wire Company 功能描述:CBL 4COND 16AWG BLK 1000' |
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