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455A Datasheet(PDF) 82 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) 82 Page - Renesas Technology Corp

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Rev.1.01
Feb 15, 2008
Page 82 of 146
REJ03B0224-0101
455A Group
Note 1. “R” represents read enabled, and “W” represents write enabled.
Pull-up control register PU0
at reset : 00002
at power down : state retained
R/W
TAPU0/TPU0A
PU03
Port P12 and P13 pull-up transistor control
bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU02
Port P10 and P11 pull-up transistor control
bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU01
Port P02 and P03 pull-up transistor control
bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU00
Port P00 and P01 pull-up transistor control
bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
Pull-up control register PU1
at reset : 00002
at power down : state retained
R/W
TAPU1/TPU1A
PU13
Port P23 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU12
Port P22 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU11
Port P21 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU10
Port P20 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
Pull-up control register PU2
at reset : 00002
at power down : state retained
R/W
TAPU2/TPU2A
PU23
Port P33 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU22
Port P32 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU21
Port P31 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU20
Port P30 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
Pull-up control register PU3
at reset : 00002
at power down : state retained
R/W
TAPU3/TPU3A
PU33
Port D6 and D7 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU32
Port D4 and D5 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU31
Port D2 and D3 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU30
Port D0 and D1 pull-up transistor control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON



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