參數(shù)資料
型號: M34571G4
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述: 單芯片4位微機(jī)的CMOS
文件頁數(shù): 9/126頁
文件大小: 1627K
代理商: M34571G4
Rev.1.02
REJ03B0179-0102
May 25, 2007
Page 9 of 124
4571 Group
Fig 4.
Port block diagram (2)
Edge detection
circuit
Key-on wakeup input
IAP1 instruction
OP1A instruction
(Note 1)
(Note 1)
P1
0
-
P1
3
(Note 2)
D
T
Q
K1
i
PU1
i
(Note 3)
A
i
Register A
A
i
(Note 3)
(Note 3)
(Note 4)
Pull-up
transistor
IAP2 instruction
OP2A instruction
(Note 1)
(Note 1)
PU2
0
P2
0
/INT0(Note 2)
D
T
Q
External 0 interrupt
External 0 interrupt
Key-on wakeup input
Timer 1 count start
synchronous circuit input
(Notes 5, 6)
A
0
Register A
A
0
Edge detection
circuit
Key-on wakeup input
K2
0
(Note 4)
IAP2 instruction
OP2A
instruction
(Note 1)
(Note 1)
PU2
1
P2
1
/INT1(Note 2)
D
T
Q
External 1 interrupt
External 1 interrupt
Key-on wakeup input
A
1
Register A
A
1
Edge detection
circuit
Key-on wakeup input
K2
1
(Note4)
Pull-up
transistor
Pull-up
transistor
(Notes 5, 6)
Notes 1.
This symbol represents a parasitic diode on the port.
2. Applied potential to these ports must be V
DD
or less.
3. i represents bits 0 to 3.
4. Falling edge of port input is detected.
5. As for details, refer to the external interrupt structure.
6. The threshold value of port input is different from that of external interrupt input.
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