C8051F353 Silicon Laboratories Inc, C8051F353 Datasheet - Page 71
![IC 8051 MCU 8K FLASH 28MLP](/photos/6/93/69391/sl-28-mlp_sml.jpg)
C8051F353
Manufacturer Part Number
C8051F353
Description
IC 8051 MCU 8K FLASH 28MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F35xr
Specifications of C8051F353
Core Processor
8051
Core Size
8-Bit
Speed
50MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
17
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x16b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
C8051F353-GM
Manufacturer:
SiliconL
Quantity:
8 050
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8.
The temperature sensor system consists of two diodes with different temperature properties and two con-
stant current sources. The two channels are connected to the ADC inputs internally, using the ADC’s ana-
log multiplexer. The temperature sensor system can be used in a single-ended or differential mode, to
measure the temperature of the C8051F350/1/2/3. Single channel measurements produce more output
voltage per degree C, but are not as linear as differential measurements. See Table 8.1 for temperature
sensor electrical characteristics.
The temperature sensor channels are automatically enabled when they are selected by the ADC multi-
plexer. To use the temperature sensor for a single-channel measurement, the ADC multiplexer should be
configured with one channel connected to the temperature sensor, and the other connected to AGND. For
a differential measurement, the temperature sensor should be selected for both ADC channels.
The transfer functions for single-channel and differential measurements are shown in Figure 8.2 and
Figure 8.3, respectively. For slope and offset values, refer to Table 8.1.
V
Linearity
Offset (Note 1)
Slope (Note 1)
AV+ Supply Current
Note 1: Represents one standard deviation from the mean.
DD
= 3.0 V; -40 to +85 °C unless otherwise specified
Parameter
Temperature Sensor
Table 8.1. Temperature Sensor Electrical Characteristics
Figure 8.1. Temperature Sensor Block Diagram
Single Channel Measurement
Differential Measurement
AIN+ Channel Measurement, Temp = 0 °C
Differential Measurement, Temp = 0 °C
AIN+ Channel Measurement
Differential Measurement
Single Channel Measurement
Differential Measurement
Channel
AIN+
AGND
Conditions
AV+
Rev. 0.4
Channel
AIN-
To AIN+ Mux
To AIN- Mux
C8051F350/1/2/3
Min
-1.73
54.3
Typ
757
205
10
20
Max
mV/°C
uV/°C
Units
mV
mV
µA
µA
°C
°C
71
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