aduc847bs8-3 Analog Devices, Inc., aduc847bs8-3 Datasheet - Page 25

• Manufacturer Part Number: aduc847bs8-3
• Description: Microconverter, 10-channel 24-bit Adc With Embedded 62kb Flash Mcu
• Manufacturer: Analog Devices, Inc.

ADCCON1 (ADC Control Register)
ADCCON1 is used to configure the ADC for Buffer, unipolar or bipolar coding and ADC range configuration.
ADCCON1 ADC Control SFR
SFR Address
Power-On Default Value 07H
Bit Addressable
Table X. ADCCON1 SFR Bit Designations
Bit
7
6
5
4
3
2
1
0
REV. PrA 05/03
Name
BUF1
BUF0
UNI
–––
–––
RN2
RN1
RN0
Description
Buffer Configuration Bits
BUF1
ADC Unipolar Bit.
Set by user to enable unipolar coding, i.e., zero differential input will result in 0x000000 output.
Cleared by user to enable bipolar coding, zero differential input will result in 0x800000 output.
Reserved for Future Use
Reserved for Future Use
ADC Range Bits. Written by the user to select the ADC input range as follows:
RN2
1
0
0
1
0
0
0
0
1
1
1
1
D2H
No
BUF0
RN1
0
1
0
0
0
1
1
0
1
1
1
0
RN0
0
1
0
1
1
0
1
0
Buffer Configuration
ADC+ and ADC- are buffered
ADC+ only buffered
Buffer Bypass
Reserved for Future Use.
±20 mV (0 mV–20 mV in Unipolar Mode)
±40 mV (0 mV–40 mV in Unipolar Mode)
±80 mV (0 mV–80 mV in Unipolar Mode)
±160 mV (0 mV–160 mV in Unipolar Mode)
±320 mV (0 mV–320 mV in Unipolar Mode)
±1.28 V (0 V–1.28 V in Unipolar Mode)
±2.56 V (0 V–2.56 V in Unipolar Mode)
±640 mV (0 mV–640 mV in Unipolar Mode)
Selected ADC Input Range (VREF = 2.5 V)
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