C8051F301-GS Silicon Laboratories Inc, C8051F301-GS Datasheet - Page 37
C8051F301-GS
Manufacturer Part Number
C8051F301-GS
Description
IC 8051 MCU 8K FLASH 14-SOIC
Manufacturer
Silicon Laboratories Inc
Series
C8051F30xr
Specifications of C8051F301-GS
Program Memory Type
FLASH
Program Memory Size
8KB (8K x 8)
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
I2C/SMBus/UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
8
Number Of Timers
3
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F300DK
Minimum Operating Temperature
- 40 C
Package
14SOIC
Device Core
8051
Family Name
C8051F30x
Maximum Speed
25 MHz
Operating Supply Voltage
3.3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1444 - ADAPTER PROGRAM TOOLSTICK F300336-1319 - REFERENCE DESIGN STEPPER MOTOR
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1536-5
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The uncalibrated temperature sensor output is extremely linear and suitable for relative temperature mea-
surements (see Table 5.1 for linearity specifications). For absolute temperature measurements, gain and/
or offset calibration is recommended. Typically a 1-point calibration includes the following steps:
Figure 5.3 shows the typical temperature sensor error assuming a 1-point calibration at 25 °C. Note that
parameters which affect ADC measurement, in particular the voltage reference value, will also
affect temperature measurement.
Step 1. Control/measure the ambient temperature (this temperature must be known).
Step 2. Power the device, and delay for a few seconds to allow for self-heating.
Step 3. Perform an ADC conversion with the temperature sensor selected as the positive input
Step 4. Calculate the offset and/or gain characteristics, and store these values in non-volatile
Figure 5.2. Typical Temperature Sensor Transfer Function
and GND selected as the negative input.
memory for use with subsequent temperature sensor measurements.
1200
1100
1000
(mV)
900
800
700
-50
0
Rev. 2.9
V
TEMP
50
= 3.35*(TEMP
C8051F300/1/2/3/4/5
C
100
) + 897 mV
(Celsius)
37
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