C8051F131R Silicon Labs, C8051F131R Datasheet - Page 298

• Manufacturer Part Number: C8051F131R
• Description: 8-bit Microcontrollers - MCU 128kB 100MIPS 8448B RAM
• Manufacturer: Silicon Labs

Specifications of C8051F131R

• Product Category: 8-bit Microcontrollers - MCU
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 100 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 8.25 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2.7 V to 3.6 V
• Package / Case: TQFP-64
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 9
• Data Rom Size: 64 KB
• Interface Type: I2C, SMBus, SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 32
• Number Of Timers: 16 bit
• Processor Series: C8051
• Program Memory Type: Flash
• Factory Pack Quantity: 500
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V

C8051F120/1/2/3/4/5/6/7
C8051F130/1/2/3
298
Bits7–0: SADDR0.[7:0]: UART0 Slave Address
Bits7–0: SADEN0.[7:0]: UART0 Slave Address Enable
Bits7–0: SBUF0.[7:0]: UART0 Buffer Bits 7–0 (MSB–LSB)
R/W
R/W
R/W
Bit7
Bit7
Bit7
The contents of this register are used to define the UART0 slave address. Register SADEN0
is a bit mask to determine which bits of SADDR0 are checked against a received address:
corresponding bits set to logic 1 in SADEN0 are checked; corresponding bits set to logic 0
are “don’t cares”.
Bits in this register enable corresponding bits in register SADDR0 to determine the UART0
slave address.
0: Corresponding bit in SADDR0 is a “don’t care”.
1: Corresponding bit in SADDR0 is checked against a received address.
This is actually two registers; a transmit and a receive buffer register. When data is moved
to SBUF0, it goes to the transmit buffer and is held for serial transmission. Moving a byte to
SBUF0 is what initiates the transmission. When data is moved from SBUF0, it comes from
the receive buffer.
SFR Definition 21.5. SADEN0: UART0 Slave Address Enable
R/W
R/W
R/W
Bit6
Bit6
Bit6
SFR Definition 21.4. SADDR0: UART0 Slave Address
SFR Definition 21.3. SBUF0: UART0 Data Buffer
R/W
R/W
R/W
Bit5
Bit5
Bit5
R/W
R/W
Bit4
Bit4
R/W
Bit4
Rev. 1.4
R/W
R/W
Bit3
Bit3
R/W
Bit3
R/W
R/W
Bit2
Bit2
R/W
Bit2
R/W
R/W
R/W
Bit1
Bit1
Bit1
SFR Address:
SFR Address:
SFR Address:
SFR Page:
SFR Page:
SFR Page:
R/W
R/W
Bit0
Bit0
R/W
Bit0
0xB9
0
0xA9
0
00000000
Reset Value
0x99
0
00000000
Reset Value
00000000
Reset Value