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455A Datasheet(PDF) 14 Page - Renesas Technology Corp

Part # 455A
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PDF  148 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

455A Datasheet(HTML) 14 Page - Renesas Technology Corp

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Rev.1.01
Feb 15, 2008
Page 14 of 146
REJ03B0224-0101
455A Group
Fig 8.
Port block diagram (6)
IAP3
instruction
OP3A
instruction
（Note1）
（Note1）
K23
Ak
Register A
Ak
（Note4）
D
T
Q
FR23
PU2k
Pull-up transistor
C3k
（Note4）
LCD power
supply
LCD power supply
LCD control signal
C3k
01
IAP3
instruction
OP3A
instruction
（Note1）
（Note1）
P30/SEG28,
P31/SEG29
（Note2）
K22
Aj
Register A
Aj
（Note3）
D
T
Q
FR22
PU2j
Pull-up transistor
C3j
（Note3）
LCD power
supply
LCD power supply
LCD control signal
C3j
01
（Note3）
P32/SEG30,
P33/SEG31
（Note2）
（Note4）
Edge detection
circuit
Key-on wakeup
input
Edge detection
circuit
Key-on wakeup
input
Notes 1.
This symbol represents a parasitic diode on the port.
2. Applied potential to these ports must be VDD or less.
3. j represents bits 0, 1.
4. k represents bits 2, 3.
（Note3）
（Note4）



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