C8051F131R Silicon Labs, C8051F131R Datasheet - Page 116

• 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
116
Bits7–5: UNUSED. Read = 000b; Write = don’t care.
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
SFR Page:
SFR Address:
R/W
Bit7
-
SFR Definition 9.2. REF0CN: Reference Control (C8051F121/3/5/7)
AD0VRS: ADC0 Voltage Reference Select.
0: ADC0 voltage reference from VREFA pin.
1: ADC0 voltage reference from DAC0 output.
AD2VRS: ADC2 Voltage Reference Select.
0: ADC2 voltage reference from VREFA pin.
1: ADC2 voltage reference from AV+.
TEMPE: Temperature Sensor Enable Bit.
0: Internal Temperature Sensor Off.
1: Internal Temperature Sensor On.
BIASE: ADC/DAC Bias Generator Enable Bit. (Must be ‘1’ if using ADC, DAC, or VREF).
0: Internal Bias Generator Off.
1: Internal Bias Generator On.
REFBE: Internal Reference Buffer Enable Bit.
0: Internal Reference Buffer Off.
1: Internal Reference Buffer On. Internal voltage reference is driven on the VREF pin.
0
0xD1
R/W
Bit6
-
R/W
Bit5
-
AD0VRS AD2VRS
R/W
Bit4
Rev. 1.4
R/W
Bit3
TEMPE
R/W
Bit2
BIASE
R/W
Bit1
REFBE
R/W
Bit0
00000000
Reset Value