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): 8/126頁
文件大?。?/td> 1627K
代理商: M34571G4
Rev.1.02
REJ03B0179-0102
May 25, 2007
Page 8 of 124
4571 Group
PORT BLOCK DIAGRAM
Fig 3.
Port block diagram (1)
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD instruction
FR1
i
(Note 3)
(Note 1)
(Note 1)
D
0
-
D
3
(Note 2)
S
R
Q
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.
A falling edge of port input is detected.
(Note 1)
(Note 1)
D
4
/CNTR0 (Note 2)
Clock input for timer 1
event count
W5
2
0
1
W1
0
W1
1
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD
instruction
S
R
Q
W5
0
0
1
1/2
W2
3
0
1
Timer 1 underflow signal
Timer 2 underflow signal
Edge detection
circuit
Key-on wakeup input
IAP0 instruction
OP0A instruction
(Note 1)
(Note 1)
P0
0
-
P0
3
(Note 2)
D
T
Q
K0
i
PU0
i
(Note 3)
A
i
Register A
A
i
(Note 3)
(Note 3)
(Note 4)
Pull-up transistor
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