C8051F342 查看數據表（PDF） - Silicon Laboratories

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C8051F342

Full Speed USB Flash MCU Family

Silicon Laboratories 

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D

SFR Definition 15.21. P4MDIN: Port4 Input Mode

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:

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.

SFR Definition 15.22. P4MDOUT: Port4 Output Mode

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

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.

Rev. 1.3

157

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