C8051F330DR Silicon Labs, C8051F330DR Datasheet - Page 39

• Manufacturer Part Number: C8051F330DR
• Description: 8-bit Microcontrollers - MCU 8kB 10ADC
• Manufacturer: Silicon Labs

Specifications of C8051F330DR

• Product Category: 8-bit Microcontrollers - MCU
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 768 B
• On-chip Adc: No
• Operating Supply Voltage: 2.7 V to 3.6 V
• Package / Case: QFN-20
• Mounting Style: SMD/SMT
• Data Rom Size: 128 B
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• On-chip Dac: No
• Processor Series: C8051
• Program Memory Type: Flash
• Factory Pack Quantity: 1500
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V

C8051F330/1/2/3/4/5
measured from ‘0’ to VREF x 1023/1024. Example codes are shown below for both right-justified and left-
justified data. Unused bits in the ADC0H and ADC0L registers are set to ‘0’.
When in Differential Mode, conversion codes are represented as 10-bit signed 2’s complement numbers.
Inputs are measured from –VREF to VREF x 511/512. Example codes are shown below for both right-jus-
tified and left-justified data. For right-justified data, the unused MSBs of ADC0H are a sign-extension of the
data word. For left-justified data, the unused LSBs in the ADC0L register are set to ‘0’.
Important Note About ADC0 Input Configuration: Port pins selected as ADC0 inputs should be config-
ured as analog inputs, and should be skipped by the Digital Crossbar. To configure a Port pin for analog
input, set to ‘0’ the corresponding bit in register PnMDIN (for n = 0,1). To force the Crossbar to skip a Port
pin, set to ‘1’ the corresponding bit in register PnSKIP (for n = 0,1). See
on page 123
5.2.
The typical temperature sensor transfer function is shown in Figure 5.2. The output voltage (V
positive ADC input when the temperature sensor is selected by bits AMX0P4–0 in register AMX0P.
42
VREF x 1023/1024
–VREF x 256/512
VREF x 512/1024
VREF x 256/1024
VREF x 256/512
VREF x 511/512
Input Voltage
Input Voltage
Temperature Sensor
–VREF
0
0
for more Port I/O configuration details.
Right-Justified ADC0H:ADC0L
Right-Justified ADC0H:ADC0L
(AD0LJST = 0)
(AD0LJST = 0)
0x01FF
0xFF00
0xFE00
0x0100
0x0000
0x03FF
0x0200
0x0100
0x0000
Rev. 1.7
Left-Justified ADC0H:ADC0L
Left-Justified ADC0H:ADC0L
Section “14. Port Input/Output”
(AD0LJST = 1)
(AD0LJST = 1)
0x7FC0
0xFFC0
0xC000
0x4000
0x0000
0x8000
0x8000
0x4000
0x0000
TEMP
) is the