4559 Datasheet, PDF (82/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4559 Group
Port output structure control register FR0
FR03 Ports P12, P13 output structure selection bit
FR02 Ports P10, P11 output structure selection bit
FR01 Ports P02, P03 output structure selection bit
FR00 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 Ports D3 output structure selection bit
FR12 Ports D2 output structure selection bit
FR11 Ports D1 output structure selection bit
FR10 Ports 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 Ports P32, P33 output structure selection bit
FR22 Ports P30, P31 output structure selection bit
FR21 Ports D5 output structure selection bit
FR20 Ports D4 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
FR33 Ports P23 output structure selection bit
FR32 Ports P22 output structure selection bit
FR31 Ports P21 output structure selection bit
FR30 Ports P20 output structure selection bit
Note 1. “W” represents write enabled.
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
W
TFR0A
W
TFR1A
W
TFR2A
W
TFR3A
Rev.1.04 Aug 23, 2007 Page 82 of 146
REJ03B0188-0104