C8051F800DK Silicon Laboratories Inc, C8051F800DK Datasheet - Page 60
![KIT DEV C8051F800](/photos/28/94/289400/mcudevkit_sml.jpg)
C8051F800DK
Manufacturer Part Number
C8051F800DK
Description
KIT DEV C8051F800
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F800DK
Contents
Board, Cables, CD, Debugger, Power Supply
Processor To Be Evaluated
C8051F800
Data Bus Width
16 bit
Interface Type
USB
Operating Supply Voltage
7 V to 15 V
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F8xx
Lead Free Status / Rohs Status
Supplier Unconfirmed
Other names
336-1797
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C8051F80x-83x
10. Voltage and Ground Reference Options
The voltage reference MUX is configurable to use an externally connected voltage reference, the on-chip
voltage reference, or one of two power supply voltages (see Figure 10.1). The ground reference MUX
allows the ground reference for ADC0 to be selected between the ground pin (GND) or a port pin dedi-
cated to analog ground (P0.1/AGND).
The voltage and ground reference options are configured using the REF0CN SFR described on page 62.
Electrical specifications are can be found in the Electrical Specifications Chapter.
Important Note About the V
inputs. When using an external voltage reference, P0.0/VREF should be configured as an analog input and
skipped by the Digital Crossbar. When using AGND as the ground reference to ADC0, P0.1/AGND should
be configured as an analog input and skipped by the Digital Crossbar. Refer to Section “23. Port Input/Out-
put” on page 138 for complete Port I/O configuration details. The external reference voltage must be within
the range 0 V
GND.
60
4.7F
Bypass Capacitors
Recommended
GND
VDD
+
R1
Reference
External
Voltage
Circuit
0.1F
REF
Figure 10.1. Voltage Reference Functional Block Diagram
V
P0.1/AGND
P0.0/VREF
DD
and the external ground reference must be at the same DC voltage potential as
GND
V
DD
REF
and AGND Inputs: Port pins are used as the external V
Regulated Digital Supply
High Speed Reference
REF0CN
Rev. 1.0
Internal 1.65V
Internal 1.8V
IOSCEN
EN
EN
REFGND
Bias Generator
Temp Sensor
00
01
10
11
0
1
To Analog Mux
REF
To ADC, Internal
Oscillator,
Reference,
TempSensor
and AGND
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