c8051t617 Silicon Laboratories, c8051t617 Datasheet - Page 125

• Manufacturer Part Number: c8051t617
• Description: Mixed Signal Byte-programmable Eprom Mcu
• Manufacturer: Silicon Laboratories

SFR Definition 14.7. P1: Port1
SFR Definition 14.8. P1MDIN: Port1 Input Mode
Bits7–0: P1.[7:0]
Note:Only P1.0–P1.5 are associated with Port pins on the C8051T616/7 devices.
Bits7–0: Analog Input Configuration Bits for P1.7-P1.0 (respectively).
Note:Only P1.0–P1.5 are associated with Port pins on the C8051T616/7 devices.
P1.7
R/W
R/W
Bit7
Bit7
Write - Output appears on I/O pins per Crossbar Registers.
0: Logic Low Output.
1: Logic High Output (high impedance if corresponding P1MDOUT.n bit = 0).
Read - Always reads ‘1’ if selected as analog input in register P1MDIN. Directly reads Port
pin when configured as digital input.
0: P1.n pin is logic low.
1: P1.n pin is logic high.
Port pins configured as analog inputs have their weak pullup, digital driver, and digital
receiver disabled.
0: Corresponding P1.n pin is configured as an analog input.
1: Corresponding P1.n pin is not configured as an analog input.
P1.6
R/W
R/W
Bit6
Bit6
P1.5
R/W
R/W
Bit5
Bit5
P1.4
R/W
R/W
Bit4
Bit4
Rev. 0.3
P1.3
R/W
R/W
Bit3
Bit3
C8051T610/1/2/3/4/5/6/7
P1.2
R/W
R/W
Bit2
Bit2
P1.1
R/W
R/W
Bit1
Bit1
(bit addressable)
P1.0
R/W
R/W
Bit0
Bit0
SFR Address:
SFR Address:
Reset Value
Reset Value
11111111
11111111
0x90
0xF2
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