Texas Instruments CC253x User Manual

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ADCCON3 (0xB6) – ADC Control 3
Bit Name Reset R/W Description
7:6
EREF[1:0]
00 R/W Selects reference voltage used for the extra conversion
00: Internal reference
01: External reference on AIN7 pin
10: AVDD5 pin
11: External reference on AIN6–AIN7 differential input
5:4
EDIV[1:0]
00 R/W Sets the decimation rate used for the extra conversion. The decimation rate also determines the
resolution and the time required to complete the conversion.
00: 64 decimation rate (7 bits ENOB)
01: 128 decimation rate (9 bits ENOB)
10: 256 decimation rate (10 bits ENOB)
11: 512 decimation rate (12 bits ENOB)
3:0
ECH[3:0]
0000 R/W Single channel select. Selects the channel number of the single conversion that is triggered by
writing to ADCCON3.
0000: AIN0
0001: AIN1
0010: AIN2
0011: AIN3
0100: AIN4
0101: AIN5
0110: AIN6
0111: AIN7
1000: AIN0–AIN1
1001: AIN2–AIN3
1010: AIN4–AIN5
1011: AIN6–AIN7
1100: GND
1101: Reserved
1110: Temperature sensor
1111: VDD/3
TR0 (0x624B) – Test Register 0
Bit Name Reset R/W Description
7:1 – 0000 000 R0 Reserved. Write as 0.
0
ADCTM
0 R/W
Set to 1 to connect the temperature sensor to the SOC_ADC. See also ATEST register description
to enable the temperature sensor in Section 23.15.3 (CC253x) or Section 24.1 (CC2540) or
Chapter 25 (CC2541).
143
SWRU191C–April 2009–Revised January 2012 ADC
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Texas Instruments CC253x Specifications

General

Brand	Texas Instruments
Model	CC253x
Category	Microcontrollers
Language	English