C8051T610DB32 Silicon Laboratories Inc, C8051T610DB32 Datasheet - Page 54
![DAUGHT BOARD T610 32TQFP SOCKET](/photos/9/2/90275/c8051t610db32_sml.jpg)
C8051T610DB32
Manufacturer Part Number
C8051T610DB32
Description
DAUGHT BOARD T610 32TQFP SOCKET
Manufacturer
Silicon Laboratories Inc
Datasheet
1.C8051T610DB32.pdf
(218 pages)
Specifications of C8051T610DB32
Module/board Type
Socket Module - TQFP
Processor To Be Evaluated
C8051T61x
Interface Type
USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051T610DK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
336-1505
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- Download datasheet (2Mb)
C8051T610/1/2/3/4/5/6/7
10. Voltage Reference Options
The Voltage reference multiplexer for the ADC is configurable to use an externally connected voltage refer-
ence, the unregulated power supply voltage (V
The REFSL bit in the Reference Control register (REF0CN, SFR Definition 10.1) selects the reference
source for the ADC. For an external source, REFSL should be set to 0 to select the VREF pin. To use V
as the reference source, REFSL should be set to 1. To override this selection and use the internal regulator
as the reference source, the REGOVR bit can be set to 1. The electrical specifications for the voltage ref-
erence circuit are given in Section “7. Electrical Characteristics” on page 31.
Important Note about the VREF Pin: When using an external voltage reference, the VREF pin should be
configured as an analog pin and skipped by the Digital Crossbar. Refer to Section “21. Port Input/Output”
on page 113 for the location of the VREF pin, as well as details of how to configure the pin in analog mode
and to be skipped by the crossbar.
54
VDD
GND
Recommended Bypass
4.7F
Figure 10.1. Voltage Reference Functional Block Diagram
R1
Capacitors
+
Reference
External
Voltage
Circuit
0.1F
VREF
VDD
DD
REF0CN
), or the regulated 1.8 V internal supply (see Figure 10.1).
Rev 1.0
0
1
Regulator
Internal
REGOVR
EN
0
1
Temp Sensor
To Analog Mux
VREF
(to ADC)
DD
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