4524 Datasheet, PDF (84/161 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4524 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 power down : 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 power down : 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
FR23 Port D7/CNTR0 output structure selection bit
FR22 Port D6/SCK output structure selection bit
FR21 Port D5/SOUT output structure selection bit
FR20 Port D4/SIN output structure selection bit
at reset : 00002
at power down : 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 FR3
at reset : 00002
at power down : state retained
0
FR33 Port P43 output structure selection bit
1
0
FR32 Port P42 output structure selection bit
1
0
FR31 Port P41 output structure selection bit
1
0
FR30 Port P40 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
W
TFR3A
Rev.2.00 Jul 27, 2004 page 84 of 159
REJ03B0091-0200Z