4518 Datasheet, PDF (83/160 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4518 Group
Pull-up control register PU0
at reset : 00002
at RAM back-up : state retained
PU03
PU02
PU01
PU00
P03 pin pull-up transistor
control bit
P02 pin pull-up transistor
control bit
P01 pin pull-up transistor
control bit
P00 pin pull-up transistor
control bit
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
Pull-up control register PU1
at reset : 00002
at RAM back-up : state retained
P13 pin pull-up transistor
0
PU13 _{control bit}
1
P12 pin pull-up transistor
0
PU12 _{control bit}
1
P11 pin pull-up transistor
0
PU11
control bit
1
P10 pin pull-up transistor
0
PU10 _{control bit}
1
Note: “R” represents read enabled, and “W” represents write enabled.
Pull-up transistor OFF
Pull-up transistor ON
Pull-up transistor OFF
Pull-up transistor ON
Pull-up transistor OFF
Pull-up transistor ON
Pull-up transistor OFF
Pull-up transistor ON
R/W
TAPU0/
TPU0A
R/W
TAPU1/
TPU1A
Rev.3.01 2005.06.15 page 83 of 157
REJ03B0008-0301