參數資料
型號: 4571
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述: 單芯片4位微機的CMOS
文件頁數: 105/126頁
文件大?。?/td> 1627K
代理商: 4571
Rev.1.02
May 25, 2007
Page 8 of 124
REJ03B0179-0102
4571 Group
PORT BLOCK DIAGRAM
Fig 3.
Port block diagram (1)
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD instruction
FR1i
(Note 3)
(Note 1)
D0
-D3 (Note 2)
S
R
Q
Notes 1.
This symbol represents a parasitic diode on the port.
2.
Applied potential to these ports must be VDD or less.
3.
i represents bits 0 to 3.
4.
A falling edge of port input is detected.
(Note 1)
D4/CNTR0 (Note 2)
Clock input for timer 1
event count
W52
0
1
W10
W11
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD
instruction
S
R
Q
W50
0
1
1/2
W23
0
1
Timer 1 underflow signal
Timer 2 underflow signal
Edge detection
circuit
Key-on wakeup input
IAP0 instruction
OP0A instruction
(Note 1)
P00
-P03 (Note 2)
D
T
Q
K0i
PU0i
Ai
Register A
Ai
(Note 3)
(Note 4)
(Note 3)
Pull-up transistor
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