- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370934 > M38273M4-XXXFS (Mitsubishi Electric Corporation) SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER PDF資料下載
參數(shù)資料
| 型號： | M38273M4-XXXFS |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機 |
| 文件頁數(shù)： | 20/70頁 |
| 文件大?。?/td> | 1112K |
| 代理商： | M38273M4-XXXFS |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁當(dāng)前第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁
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”
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。