C8051F120 Datasheet, PDF (101/356 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F120/1/2/3/4/5/6/7
C8051F130/1/2/3
SFR Page: 2
SFR Address: 0xBE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bits7-0: ADC2 Data Word.
Figure 7.8. ADC2: ADC2 Data Word Register
R/W
Reset Value
00000000
Bit0
Single-Ended Example:
8-bit ADC Data Word appears in the ADC2 Data Word Register as follows:
Example: ADC2 Data Word Conversion Map, Single-Ended AIN2.0 Input
(AMX2CF = 0x00; AMX2SL = 0x00)
AIN2.0-AGND (Volts)
VREF * (255/256)
VREF * (128/256)
VREF * (64/256)
0
ADC2
0xFF
0x80
0x40
0x00
Code = Vin × --^G-----^a---ⁱ--ⁿ--- × 256
VREF
Differential Example:
8-bit ADC Data Word appears in the ADC2 Data Word Register as follows:
Example: ADC2 Data Word Conversion Map, Differential AIN2.0-AIN2.1 Input
(AMX2CF = 0x01; AMX2SL = 0x00)
AIN2.0-AIN2.1
(Volts)
VREF * (127/128)
VREF * (64/128)
0
-VREF * (64/128)
-VREF * (128/128)
ADC2
0x7F
0x40
0x00
0xC0 (-64d)
0x80 (-128d)
Code = Vin × _2-----×--^G---_V-^a---_R-ⁱ--ⁿ-_E----_F-- × 256
Figure 7.9. ADC2 Data Word Example
Rev. 1.3
101