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4551 Datasheet(PDF) 21 Page - Renesas Technology Corp

Part # 4551
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
PDF  155 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4551 Datasheet(HTML) 21 Page - Renesas Technology Corp

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4551 Group User’s Manual
HARDWARE
1-9
PORT BLOCK DIAGRAMS (continued)
PIN DESCRIPTION
SEG0–SEG15
LCD power supply
LCD power supply
LCD control signal
LCD control signal
Pch
Nch
COM0–COM3
LCD control signal
LCD control signal
Pch
LCD control signal
LCD control signal
Nch
Pch
Nch
LCD power supply
LCD power supply
LCD power supply
This symbol represents a parasitic diode.
Note:
STCR instruction
SPCR instruction
S
R
Q
CR flag
Carrier wave
output circuit
Register C1
TC1A instruction
W31
Timer LC underflow signal
F/F
W30
C20
Timer 1 underflow signal
W20
CARR
To timer 1
CARRY
(Note)
F/F



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