C2510Fx / CC2511Fx
ADCCON3 (0xB6) – ADC Control 3
Bit
Name
Reset
R/W
Description
Selects reference voltage used for the extra conversion
7:6
EREF[1:0]
00
R/W
00
01
10
11
Internal 1.25V reference
External reference on AIN7 pin (only CC2510Fx)
AVDD pin
External reference on AIN6-AIN7 differential input (only CC2510Fx)
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 time required to complete the conversion.
00
01
10
11
64 dec rate (7 bits resolution)
128 dec rate (9 bits resolution)
256 dec rate (10 bits resolution)
512 dec rate (12 bits resolution)
3:0
ECH[3:0]
0000
R/W
Extra channel select. An extra conversion will be triggered by writing to these
bits. If they are written while the ADC is running, the conversion will take
place as soon as the sequence has completed. If the bits are written while
the ADC is not running, the conversion will take place immediately after this
register has been updated.
The bits are automatically cleared when the extra conversion has finished.
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN0-AIN1
AIN2-AIN3
AIN4-AIN5
AIN6-AIN7
GND
Positive voltage reference
Temperature sensor
VDD/3
SWRS055D
Page 145 of 243
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