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4524 Datasheet(PDF) 11 Page - Renesas Technology Corp

Part # 4524
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PDF  161 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4524 Datasheet(HTML) 11 Page - Renesas Technology Corp

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Rev.2.00
Jul 27, 2004
page 11 of 159
REJ03B0091-0200Z
4524 Group
Port block diagram (3)
W11
W10
S
RQ
FR23
W60
0
1
D7/CNTR0
S
RQ
D8/INT0
S
RQ
D9/INT1
Register YDecoder
SD instruction
RD instruction
Skip decision
(SZD instruction)
CLD
instruction
(Note 1)
(Note 2)
Clock (input) for timer 1 event count
Underflow signal divided by 2
of timer 1 or timer 2
(Note 1)
(Note 2)
Register Y
Decoder
SD instruction
RD instruction
CLD
instruction
(Note 3)
External 0 interrupt
circuit
External 0 interrupt
Key-on wakeup
Timer 1 count start synchronous circuit input
(Note 1)
(Note 2)
Register YDecoder
SD instruction
RD instruction
CLD
instruction
(Note 3)
External 1 interrupt
circuit
External 1 interrupt
Key-on wakeup
Timer 3 count start synchronous circuit input
This symbol represents a parasitic diode on the port.
2: Applied potential to these ports must be VDD or less.
3: As for details, refer to the description of external interrupt circuit.
Notes 1:



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