C8051F020DK Silicon Laboratories Inc, C8051F020DK Datasheet - Page 92
C8051F020DK
Manufacturer Part Number
C8051F020DK
Description
DEV KIT FOR F020/F021/F022/F023
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheet
1.C8051F020DK.pdf
(272 pages)
Specifications of C8051F020DK
Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F02x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F020
Silicon Family Name
C8051F02x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Silicon Laboratories C8051 F020/021/022/023
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1200
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F020DK
Manufacturer:
SiliconL
Quantity:
10
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C8051F020/1/2/3
The temperature sensor connects to the highest order input of the ADC0 input multiplexer (see
Multiplexer and PGA” on page 43
page 59
While disabled, the temperature sensor defaults to a high impedance state and any A/D measurements performed on
the sensor while disabled result in undefined data.
92
VDD = 3.0 V, AV+ = 3.0 V, -40°C to +85°C unless otherwise specified
INTERNAL REFERENCE (REFBE = 1)
Output Voltage
VREF Short-Circuit Current
VREF Temperature Coefficient
Load Regulation
VREF Turn-on Time 1
VREF Turn-on Time 2
VREF Turn-on Time 3
EXTERNAL REFERENCE (REFBE = 0)
Input Voltage Range
Input Current
Bits7-5:
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
R/W
Bit7
-
for C8051F022/3 devices). The TEMPE bit within REF0CN enables and disables the temperature sensor.
PARAMETER
UNUSED. Read = 000b; Write = don’t care.
AD0VRS: ADC0 Voltage Reference Select
0: ADC0 voltage reference from VREF0 pin.
1: ADC0 voltage reference from DAC0 output.
AD1VRS: ADC1 Voltage Reference Select
0: ADC1 voltage reference from VREF1 pin.
1: ADC1 voltage reference from AV+.
TEMPE: Temperature Sensor Enable Bit.
0: Internal Temperature Sensor Off.
1: Internal Temperature Sensor On.
BIASE: ADC/DAC Bias Generator Enable Bit. (Must be ‘1’ if using ADC or DAC).
0: Internal Bias Generator Off.
1: Internal Bias Generator On.
REFBE: Internal Reference Buffer Enable Bit.
0: Internal Reference Buffer Off.
1: Internal Reference Buffer On. Internal voltage reference is driven on the VREF pin.
R/W
Bit6
-
Table 9.1. Voltage Reference Electrical Characteristics
Figure 9.2. REF0CN: Reference Control Register
R/W
Bit5
-
25°C ambient
Load = 0 to 200 µA to AGND
4.7µF tantalum, 0.1µF ceramic bypass
0.1µF ceramic bypass
no bypass cap
for C8051F020/1 devices, or
AD0VRS
R/W
Bit4
CONDITIONS
AD1VRS
Rev. 1.4
R/W
Bit3
Section “6.1. Analog Multiplexer and PGA” on
TEMPE
R/W
Bit2
MIN
2.36
1.00
BIASE
R/W
Bit1
TYP
2.43
0.5
15
20
10
2
0
REFBE
R/W
Bit0
(AV+) -
Section “5.1. Analog
MAX
2.48
30
0.3
1
SFR Address:
00000000
Reset Value
0xD1
ppm/µA
UNITS
ppm/°C
mA
µA
ms
µs
µs
V
V
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