C8051F351 Silicon Laboratories Inc, C8051F351 Datasheet - Page 39

• Manufacturer Part Number: C8051F351
• Description: IC 8051 MCU 8K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F35xr

Specifications of C8051F351

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x24b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

5.
The C8051F350/1/2/3 include a fully-differential, 24-bit (C8051F350/1) or 16-bit (C8051F352/3) Sigma-
Delta Analog to Digital Converter (ADC) with on-chip calibration capabiliites. Two separate decimation fil-
ters can be programmed for throughputs of up to 1 kHz. An internal reference is available, or a differential
external reference can be used for ratiometric measurements. A Programmable Gain Amplifier (PGA) is
included, with eight gain settings up to 128x. The on-chip input buffers can be used to provide a high input
impedance for direct connection to sensitive transducers. An 8-bit offset DAC allows for correction of large
input offset voltages.
AIN+
AIN-
24 or 16-Bit Analog to Digital Converter (ADC0)
AD0BCE
AD0BCE
AGND
AV+
ADC0BUF
Buffers
Input
Figure 5.1. ADC0 Block Diagram
Offset
8-Bit
DAC
Σ
Σ
ADC0CN
Rev. 0.4
PGA
ADC0CN
Reference
Voltage
Modulator
ADC0MD
ADC0CLK
÷
C8051F350/1/2/3
Control and
Calibration
SYSCLK
SINC
Fast Filter
ADC0STA
ADC0DECH:L
3
Filter
ADC0COH:M:L
ADC0CGH:M:L
ADC0FH:M:L
ADC0H:M:L
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