C8051F206DK Silicon Laboratories Inc, C8051F206DK Datasheet - Page 50

• Manufacturer Part Number: C8051F206DK
• Description: DEV KIT FOR C8051F206
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F206DK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F206
• Interface Type: USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Silicon Laboratories C8051F206
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1237

C8051F2xx
7.
The voltage reference circuit selects between an externally connected reference and the power supply
voltage (V
An external reference can be connected to the VREF pin and selected by setting the REF0CN special
function register per Figure 7.1. The external reference supply must be between V
may also be selected using REF0CN per SFR Definition 7.1. The electrical specifications for the Voltage
Reference are given in Table 7.1.
50
Bits7–2: UNUSED. Read = 00000b; Write = don't care
Bit1–0:
R/W
Bit7
Voltage Reference (C8051F206/220/221/226)
-
Vref (external)
DD
REFSL1– REFSL0: Voltage reference selection.
Bits control which reference is selected.
00: External VREF source is selected.
01: Reserved.
10: Reserved.
11: V
). (See Figure 7.1).
Vdd
R/W
Bit6
Figure 7.1. Voltage Reference Functional Block Diagram
DD
-
selected as VREF source.
SFR Definition 7.1. REF0CN: Reference Control
R/W
Bit5
-
R/W
Bit4
-
Rev. 1.6
R/W
Bit3
-
2
R/W
Bit2
-
REFSL1
Set REF0CN to:
00: Use external Vref
11: Use Vdd
REF0CN[1:0]
R/W
Bit1
DD
REFSL0
R/W
Bit0
– 0.3 V and 1 V. V
To ADC Ref
SFR Address:
Reset Value
00000000
0xD1
DD