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4518 Datasheet(PDF) 10 Page - Renesas Technology Corp

Part # 4518
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PDF  160 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4518 Datasheet(HTML) 10 Page - Renesas Technology Corp

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Rev.3.01
2005.06.15
page 10 of 157
REJ03B0008-0301
4518 Group
Port block diagram (2)
This symbol represents a parasitic diode on the port.
2: Applied potential to these ports must be VDD or less.
Notes 1:
W10
W11
S
RQ
FR22
W60
0
1
D6/CNTR0
Register Y
Decoder
SD instruction
RD instruction
Skip decision
CLD
instruction
(Note 1)
(Note 2)
Timer 1 underflow signal
W23
0
1
1/2
1/2
Timer 2 underflow signal
W62
0
1
Clock (input) for timer 1 event count
or period measurement signal input
W50
W51
W30
W31
S
RQ
FR23
W43
0
1
D7/CNTR1
Register Y
Decoder
SD instruction
RD instruction
Skip decision
CLD
instruction
(Note 1)
(Note 2)
W63
0
1
Clock (input) for timer 3 event count
PWMOD
SZD instruction
SZD instruction



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