C8051F351 Silicon Laboratories Inc, C8051F351 Datasheet - Page 23

• 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: -

1.5.
The C8051F350/1/2/3 devices include two 8-bit current-mode Digital-to-Analog Converters (IDACs). The
maximum current output of the IDACs can be adjusted for four different current settings; 0.25 mA, 0.5 mA,
1 mA, and 2 mA. A flexible output update mechanism allows for seamless full-scale changes, and supports
jitter-free updates for waveform generation. IDAC updates can be performed on-demand, scheduled on a
Timer overflow, or synchronized with an external signal. Figure 1.8 shows a block diagram of the IDAC cir-
cuitry.
Two 8-bit Current-Mode DACs
8-bit Digital
8-bit Digital
Data Write
Timer 0
Timer 1
Timer 2
Timer 3
CNVSTR
Data Write
Timer 0
Timer 1
Timer 2
Timer 3
CNVSTR
Input
Input
Figure 1.8. IDAC Block Diagram
8
8
8
8
Rev. 0.4
IDA0
IDA1
C8051F350/1/2/3
Current
Current
Output
Output
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