C8051T622-GMR Silicon Labs, C8051T622-GMR Datasheet - Page 110
C8051T622-GMR
Manufacturer Part Number
C8051T622-GMR
Description
8-bit Microcontrollers - MCU USB-OTP-16K-QFN24
Manufacturer
Silicon Labs
Datasheet
1.C8051T622-GMR.pdf
(254 pages)
Specifications of C8051T622-GMR
Rohs
yes
Core
8051
Data Bus Width
8 bit
Processor Series
C8051
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C8051T622/3 and C8051T326/7
The Port input mode of the I/O pins is defined using the Port Input Mode registers (PnMDIN). Each Port
cell can be configured for analog or digital I/O. This selection is required even for the digital resources
selected in the XBRn registers, and is not automatic. The only exception to this is P2.0, which can only be
used for digital I/O.
The output driver characteristics of the I/O pins are defined using the Port Output Mode registers (PnMD-
OUT). Each Port Output driver can be configured as either open drain or push-pull. This selection is
required even for the digital resources selected in the XBRn registers, and is not automatic. The only
exception to this is the SMBus (SDA, SCL) pins, which are configured as open-drain regardless of the
PnMDOUT settings.
SFR Definition 17.8. P0: Port 0
SFR Address = 0x80; Bit-Addressable
110
Name
Reset
7:0
Bit
Type
Bit
P0[7:0]
Name
7
1
Port 0 Data.
Sets the Port latch logic
value or reads the Port pin
logic state in Port cells con-
figured for digital I/O.
6
1
Description
5
1
Rev. 1.1
0: Set output latch to logic
LOW.
1: Set output latch to logic
HIGH.
4
1
P0[7:0]
R/W
Write
3
1
2
1
0: P0.n Port pin is logic
LOW.
1: P0.n Port pin is logic
HIGH.
1
1
Read
0
1
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