C8051F310 datasheet(136/228 Pages) SILABS

136 / 228 page

C8051F310/1/2/3/4/5/6/7

136

Rev. 1.7

SFR Definition 13.3. P0: Port0

SFR Definition 13.4. P0MDIN: Port0 Input Mode

Bits7–0: P0.[7:0]

Write - Output appears on I/O pins per Crossbar Registers.

0: Logic Low Output.

1: Logic High Output (high impedance if corresponding P0MDOUT.n bit = 0).

Read - Always reads ‘1’ if selected as analog input in register P0MDIN. Directly reads Port

pin when configured as digital input.

0: P0.n pin is logic low.

1: P0.n pin is logic high.

R/W

Reset Value

P0.7

P0.6

P0.5

P0.4

P0.3

P0.2

P0.1

P0.0

11111111

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SFR Address:

(bit addressable)

0x80

Bits7–0: Analog Input Configuration Bits for P0.7–P0.0 (respectively).

Port pins configured as analog inputs have their weak pullup, digital driver, and digital

receiver disabled.

0: Corresponding P0.n pin is configured as an analog input.

1: Corresponding P0.n pin is not configured as an analog input.

R/W

Reset Value

11111111

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SFR Address:

0xF1

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