4509 Datasheet, PDF (75/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4509 Group
PU03
PU02
PU01
PU00
Pull-up control register PU0
Port P03 pull-up transistor
control bit
Port P02 pull-up transistor
control bit
Port P01 pull-up transistor
control bit
Port P00 pull-up transistor
control bit
at reset : 00002
at RAM back-up : state retained
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
R/W
TAPU0/TPU0A
PU13
PU12
PU11
PU10
Pull-up control register PU1
Port P13 pull-up transistor
control bit
Port P12 pull-up transistor
control bit
Port P11 pull-up transistor
control bit
Port P10 pull-up transistor
control bit
at reset : 00002
at RAM back-up : state retained
R/W
TAPU1/TPU1A
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
PU23
PU22
PU21
PU20
Pull-up control register PU2
Port D3 pull-up transistor
control bit
Port D2 pull-up transistor
control bit
Port P21 pull-up transistor
control bit
Port P20 pull-up transistor
control bit
at reset : 00002
at RAM back-up : state retained
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
0
Pull-up transistor OFF
1
Pull-up transistor ON
R/W
TAPU2/TPU2A
Notes 1: “R” represents read enabled, and “W” represents write enabled.
Rev.1.02 2006.12.22 page 75 of 140
REJ03B0147-0102