C8051F337-GM Silicon Laboratories Inc, C8051F337-GM Datasheet - Page 51

• Manufacturer Part Number: C8051F337-GM
• Description: IC MCU 16K FLASH 20QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F33xr

Specifications of C8051F337-GM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-QFN
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F336DK
• Minimum Operating Temperature: - 40 C
• For Use With: 336-1451 - ADAPTER PROGRAM TOOLSTICK F330
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 336-1428-5

8. Temperature Sensor (C8051F336/8 only)
An on-chip temperature sensor is included on the C8051F336/8 which can be directly accessed via the
ADC multiplexer in single-ended configuration. To use the ADC to measure the temperature sensor, the
positive ADC mux channel should be configured to connect to the temperature sensor and the negative
ADC mux channel should be configured to connect to GND. The temperature sensor transfer function is
shown in Figure 8.1. The output voltage (V
correctly. The TEMPE bit in register REF0CN enables/disables the temperature sensor, as described in
SFR Definition 10.1. 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
“6. Electrical Characteristics” on page 27
sor.
Figure 8.1. Temperature Sensor Transfer Function
V
Temp
TEMP
C
=
= (V
(Slope
TEMP
TEMP
for the slope and offset parameters of the temperature sen-
x Temp
) is the positive ADC input when the ADC multiplexer is set
- Offset) /
Temperature
Rev.1.0
C
) +
Offset
Slope
Offset
(V at 0 Celsius)
Slope
C8051F336/7/8/9
(V / deg C)
Section
51