C8051F301-GSR Silicon Labs, C8051F301-GSR Datasheet - Page 107
![no-image](/images/no-image-200.jpg)
C8051F301-GSR
Manufacturer Part Number
C8051F301-GSR
Description
8-bit Microcontrollers - MCU 8KB 2%osc MCU
Manufacturer
Silicon Labs
Datasheet
1.C8051F301-GSR.pdf
(178 pages)
Specifications of C8051F301-GSR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
- Current page: 107 of 178
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Bits7–6: PCA0ME: PCA Module I/0 Enable Bits
Bit5:
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
Bit7:
Bits6–0: XSKP[6:0]: Crossbar Skip Enable Bits
R/W
R/W
Bit7
Bit7
—
PCA0ME
00: All PCA I/O unavailable at Port pins.
01: CEX0 routed to Port pin.
10: CEX0, CEX1 routed to Port pins.
11: CEX0, CEX1, CEX2 routed to Port pins.
CP0AOEN: Comparator0 Asynchronous Output Enable
0: Asynchronous CP0 unavailable at Port pin.
1: Asynchronous CP0 routed to Port pin.
CP0OEN: Comparator0 Output Enable
0: CP0 unavailable at Port pin.
1: CP0 routed to Port pin.
SYSCKE: /SYSCLK Output Enable
0: /SYSCLK unavailable at Port pin.
1: /SYSCLK output routed to Port pin.
SMB0OEN: SMBus I/O Enable
0: SMBus I/O unavailable at Port pins.
1: SDA, SCL routed to Port pins.
URX0EN: UART RX Enable
0: UART RX0 unavailable at Port pin.
1: UART RX0 routed to Port pin P0.5.
UTX0EN: UART TX Output Enable
0: UART TX0 unavailable at Port pin.
1: UART TX0 routed to Port pin P0.4.
UNUSED. Read = 0b; Write = don’t care.
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 P0.n pin is not skipped by the Crossbar.
1: Corresponding P0.n pin is skipped by the Crossbar.
XSKP6
R/W
SFR Definition 12.2. XBR1: Port I/O Crossbar Register 1
R/W
SFR Definition 12.1. XBR0: Port I/O Crossbar Register 0
Bit6
Bit6
CP0AOEN CP0OEN SYSCKE SMB0OEN URX0EN UTX0EN 00000000
XSKP5
R/W
Bit5
R/W
Bit5
XSKP4
R/W
Bit4
R/W
Bit4
XSKP3
Rev. 2.9
R/W
Bit3
R/W
Bit3
XSKP2
R/W
Bit2
R/W
Bit2
C8051F300/1/2/3/4/5
XSKP1
R/W
Bit1
R/W
Bit1
XSKP0
R/W
Bit0
R/W
Bit0
SFR Address:
00000000
Reset Value
SFR Address:
Reset Value
0xE1
0xE2
107
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