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4508 Datasheet(PDF) 11 Page - Renesas Technology Corp

Part # 4508
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PDF  142 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4508 Datasheet(HTML) 11 Page - Renesas Technology Corp

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4508 Group
Rev.1.02
2006.12.22
page 11 of 140
REJ03B0148-0102
Port block diagram (4)
P13/INT
FR13
(Note 1)
(Note 2)
(Note 1)
External 0 interrupt circuit
(Notes 3, 4)
External 0 interrupt
Key-on wakeup input
Timer 1 count start synchronous circuit input
(Note 2)
P12/CNTR0
(Note 1)
(Note 1)
PU12
K12
Level detection circuit
Key-on
wakeup
input
D
TQ
FR12
OP1A instruction
Register A
A2
IAP1 instruction
A2
L13
0
1
Edge detection circuit
L12
0
1
Clock (input) for
timer 2 event count
W20
W21
W53
0
1
PWM1
W50
0
1
PU13
K13
Key-on
wakeup
input
L13
0
1
L12
0
1
D
TQ
OP1A instruction
Register A
A3
IAP1 instruction
A3
Level detection circuit
Edge detection circuit
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 external interrupt structure.
4: The threshold value of port input is different from that of external interrupt input.
Notes 1:



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