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4571 Datasheet(PDF) 48 Page - Renesas Technology Corp

Part # 4571
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PDF  126 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4571 Datasheet(HTML) 48 Page - Renesas Technology Corp

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Rev.1.02
May 25, 2007
Page 48 of 124
REJ03B0179-0102
4571 Group
Note 1.“R” represents read enabled, and “W” represents write enabled.
Table 22 Pull-up control registers
Pull-up control register PU0
at reset : 00002
at RAM back-up : state retained
R/W
TAPU0/TPU0A
PU03
Port P03 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU02
Port P02 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU01
Port P01 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU00
Port P00 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
Pull-up control register PU1
at reset : 00002
at RAM back-up : state retained
R/W
TAPU1/TPU1A
PU13
Port P13 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU12
Port P12 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU11
Port P11 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU10
Port P10 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
Pull-up control register PU2
at reset : 00002
at RAM back-up : state retained
R/W
TAPU2/TPU2A
PU23 Not used
0
This bit has no function, but read/write is enabled.
1
PU22 Not used
0
This bit has no function, but read/write is enabled.
1
PU21
Port P21 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU20
Port P20 pull-up transistor
control bit
0
Pull-up transistor OFF
1
Pull-up transistor ON



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