C8051F709-GQR Silicon Labs, C8051F709-GQR Datasheet - Page 190

• Manufacturer Part Number: C8051F709-GQR
• Description: 8-bit Microcontrollers - MCU 8kB 32B EEPROM Cap Sense
• Manufacturer: Silicon Labs

Specifications of C8051F709-GQR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

C8051F70x/71x
SFR Definition 28.1. XBR0: Port I/O Crossbar Register 0
SFR Address = 0xE1; SFR Page = F
190
Name
Reset
7:6
Bit
Type
5
4
3
2
1
0
Bit
SYSCKE SYSCLK Output Enable.
Unused
SMB0E
CP0AE
URT0E
SPI0E
Name
CP0E
R
7
0
Read = 00b; Write = Don’t Care.
Comparator0 Asynchronous Output Enable.
0: Asynchronous CP0 unavailable at Port pin.
1: Asynchronous CP0 routed to Port pin.
Comparator0 Output Enable.
0: CP0 unavailable at Port pin.
1: CP0 routed to Port pin.
0: SYSCLK unavailable at Port pin.
1: SYSCLK output routed to Port pin.
SMBus I/O Enable.
0: SMBus I/O unavailable at Port pins.
1: SMBus I/O routed to Port pins.
SPI I/O Enable.
0: SPI I/O unavailable at Port pins.
1: SPI I/O routed to Port pins. Note that the SPI can be assigned either 3 or 4 GPIO
pins.
UART I/O Output Enable.
0: UART I/O unavailable at Port pin.
1: UART TX0, RX0 routed to Port pins P0.4 and P0.5.
R
6
0
CP0AE
R/W
5
0
CP0E
R/W
Rev. 1.0
4
0
Function
SYSCKE
R/W
3
0
SMB0E
R/W
2
0
SPI0E
R/W
1
0
URT0E
R/W
0
0