Silicon Laboratories C8051F347 - Manual (Page 157)

Rev. 1.3 157
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
SFR Definition 15.21. P4MDIN: Port4 Input Mode
SFR Definition 15.22. P4MDOUT: Port4 Output Mode
Bits7–0: Analog Input Configuration Bits for P4.7–P4.0 (respectively).
Port pins configured as analog inputs have their weak pull-up, digital driver, and digital
receiver disabled.
0: Corresponding P4.n pin is configured as an analog input.
1: Corresponding P4.n pin is not configured as an analog input.
Note: P4 is only available on 48-pin devices.
R/W R/W R/W R/W R/W R/W R/W R/W Reset Value
11111111
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:
0xF5
Bits7–0: Output Configuration Bits for P4.7–P4.0 (respectively); ignored if corresponding bit in regis-
ter P4MDIN is logic 0.
0: Corresponding P4.n Output is open-drain.
1: Corresponding P4.n Output is push-pull.
Note: P4 is only available on 48-pin devices.
R/W R/W R/W R/W R/W R/W R/W R/W Reset Value
00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:
0xAE