C8051F022-GQR Silicon Laboratories Inc, C8051F022-GQR Datasheet - Page 83
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C8051F022-GQR
Manufacturer Part Number
C8051F022-GQR
Description
IC 8051 MCU 64K FLASH 100TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F02xr
Specifications of C8051F022-GQR
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
64
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x8b, 8x10b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
For Use With
336-1200 - DEV KIT FOR F020/F021/F022/F023
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
C8051F022-GQR
Manufacturer:
Silicon Laboratories Inc
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8.
Each C8051F020/1/2/3 device includes two on-chip 12-bit voltage-mode Digital-to-Analog Converters (DACs).
Each DAC has an output swing of 0V to (VREF-1LSB) for a corresponding input code range of 0x000 to 0xFFF. The
DACs may be enabled/disabled via their corresponding control registers, DAC0CN and DAC1CN. While disabled,
the DAC output is maintained in a high-impedance state, and the DAC supply current falls to 1 µA or less. The volt-
age reference for each DAC is supplied at the VREFD pin (C8051F020/2 devices) or the VREF pin (C8051F021/3
devices). Note that the VREF pin on C8051F021/3 devices may be driven by the internal voltage reference or an
external source. If the internal voltage reference is used it must be enabled in order for the DAC outputs to be valid.
See
ENCE (C8051F021/3)” on page 93
8.1.
Each DAC features a flexible output update mechanism which allows for seamless full-scale changes and supports
jitter-free updates for waveform generation. The following examples are written in terms of DAC0, but DAC1 opera-
tion is identical. Note that reads from DAC0L return pre-latch data, meaning the value read is the same as the last
value written to this register, not the value at the DAC0L latch. Reads from DAC0H always return the value at the
DAC0H latch.
Section “9. VOLTAGE REFERENCE (C8051F020/2)” on page 91
DACS, 12-BIT VOLTAGE MODE
DAC Output Scheduling
DAC0MD1
DAC0MD0
DAC1MD1
DAC1MD0
DAC0DF2
DAC0DF1
DAC0DF0
DAC1DF2
DAC1DF1
DAC1DF0
DAC0EN
DAC1EN
Figure 8.1. DAC Functional Block Diagram
8
8
8
8
for more information on configuring the voltage reference for the DACs.
8
8
8
8
12
12
REF
REF
Rev. 1.4
DAC0
DAC1
or
Section “10. VOLTAGE REFER-
C8051F020/1/2/3
AGND
AGND
AV+
AV+
DAC0
DAC1
83
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