C8051F530-TB Silicon Laboratories Inc, C8051F530-TB Datasheet - Page 53

• Manufacturer Part Number: C8051F530-TB
• Description: BOARD PROTOTYPE W/C8051F530
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F530-TB

• Contents: Board
• Processor To Be Evaluated: C8051F52xA and C8051F53xA
• Interface Type: USB
• Lead Free Status / RoHS Status: Vendor undefined / Vendor undefined
• For Use With/related Products: C8051F530
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.2. Temperature Sensor
An on-chip temperature sensor is included on the C8051F52x/F52xA/F53x/F53xA devices which can be
directly accessed via the ADC0 multiplexer. To use ADC0 to measure the temperature sensor, the ADC
multiplexer channel should be configured to connect to the temperature sensor. The temperature sensor
transfer function is shown in Figure 5.2. The output voltage (V
bits AD0MX[4:0] in register ADC0MX. The TEMPE bit in register REF0CN enables/disables the tempera-
ture sensor, as described in SFR Definition 5.1. While disabled, the temperature sensor defaults to a high
impedance state and any ADC measurements performed on the sensor will result in meaningless data.
Refer to Table 5.1 for the slope and offset parameters of the temperature sensor.
Figure 4.2. Typical Temperature Sensor Transfer Function
V
Temp
TEMP
C
= (Slope x Temp
= (V
C8051F52x/F52xA/F53x/F53xA
TEMP
- Offset) / Slope
Rev. 1.3
Temperature
C
) + Offset
Offset ( V at 0 Celsius )
TEMP
) is the positive ADC input selected by
Slope ( V / deg C)
53