C8051F321-GMR Datasheet, PDF (136/250 Pages) Silicon Laboratories – Full Speed USB, 16 k ISP FLASH MCU Family

C8051F320/1
SFR Definition 14.12. P2MDIN: Port2 Input Mode Register
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:
0xF3
Bits7–0:
Analog Input Configuration Bits for P2.7–P2.0 (respectively).
Port pins configured as analog inputs have their weak pull-up, digital driver, and digital
receiver disabled.
0: Corresponding P2.n pin is configured as an analog input.
1: Corresponding P2.n pin is not configured as an analog input.
Note: P2.7–P2.4 only available on C8051F320 devices.
SFR Definition 14.13. P2MDOUT: Port2 Output Mode Register
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:
0xA6
Bits7–0:
Output Configuration Bits for P2.7–P2.0 (respectively): ignored if corresponding bit in regis-
ter P2MDIN is logic 0.
0: Corresponding P2.n Output is open-drain.
1: Corresponding P2.n Output is push-pull.
Note: P2.7–P2.4 only available on C8051F320 devices.
SFR Definition 14.14. P2SKIP: Port2 Skip Register
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:
0xD6
Bits7–4:
Bits3–0:
Unused. Read = 0000b. Write = don’t care.
P2SKIP[3:0]: Port2 Crossbar Skip Enable Bits.
These bits select Port pins to be skipped by the Crossbar Decoder. Port pins used as ana-
log inputs (for ADC or Comparator) or used as special functions (VREF input, external oscil-
lator circuit, CNVSTR input) should be skipped by the Crossbar.
0: Corresponding P2.n pin is not skipped by the Crossbar.
1: Corresponding P2.n pin is skipped by the Crossbar.
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Rev. 1.4