4518 Datasheet, PDF (84/160 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4518 Group
Port output structure control register FR0
FR03
FR02
FR01
FR00
Ports P12, P13 output structure selection
bit
Ports P10, P11 output structure selection
bit
Ports P02, P03 output structure selection
bit
Ports P00, P01 output structure selection
bit
at reset : 00002
at RAM back-up : state retained
0
N-channel open-drain output
1
CMOS output
0
N-channel open-drain output
1
CMOS output
0
N-channel open-drain output
1
CMOS output
0
N-channel open-drain output
1
CMOS output
Port output structure control register FR1
FR13 Port D3 output structure selection bit
FR12 Port D2 output structure selection bit
FR11 Port D1 output structure selection bit
FR10 Port D0 output structure selection bit
at reset : 00002
at RAM back-up : state retained
0
N-channel open-drain output
1
CMOS output
0
N-channel open-drain output
1
CMOS output
0
N-channel open-drain output
1
CMOS output
0
N-channel open-drain output
1
CMOS output
Port output structure control register FR2
at reset : 00002
at RAM back-up : state retained
0
FR23 Port D7/CNTR1 output structure selection bit
1
0
FR22 Port D6/CNTR0 output structure selection bit
1
0
FR21 Port D5 output structure selection bit
1
0
FR20 Port D4 output structure selection bit
1
Note: “R” represents read enabled, and “W” represents write enabled.
N-channel open-drain output
CMOS output
N-channel open-drain output
CMOS output
N-channel open-drain output
CMOS output
N-channel open-drain output
CMOS output
W
TFR0A
W
TFR1A
W
TFR2A
Rev.3.01 2005.06.15 page 84 of 157
REJ03B0008-0301