ADUC847 Analog Devices, ADUC847 Datasheet - Page 43

• Manufacturer Part Number: ADUC847
• Description: Precision Analog Microcontroller: 12MIPS 8052 Flash MCU + 10-Ch 24-Bit ADC + 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC847

• Mcu Core: 8052
• Mcu Speed (mips): 12
• Sram (bytes): 2304Bytes
• Gpio Pins: 34
• Adc # Channels: 10
• Other: PWM

ADC0CON1 (PRIMARY ADC CONTROL REGISTER)
ADC0CON1 is used to configure the primary ADC for buffer, unipolar, or bipolar coding, and ADC range configuration.
SFR Address:
Power-On Def lt:
Bit Addressable:
T
Bit No.
7, 6
5
4
3
2, 1, 0
able 25. ADC0CON1 SFR Bit Designations
Name
BUF1, BUF0
UNI
–––
–––
RN2, RN1, RN0
au
D2H
07H
No
Buffer Con
BUF1
0
0
1
1
Primary AD
Set by the
Cleared by
Not Implemented. Write Don’t Care.
Not Implemented. Write Don’t Care.
Primary AD
RN2
0
0
0
0
1
1
1
1
Description
BU
0
1
0
1
RN
0
0
1
1
0
0
1
1
figuration Bits
user to enable unipolar coding; zero differential input results in 000000H output.
F0
1
the user to enable bipolar coding; zero differential input results in 800000H output.
C Unipolar Bit.
C Rang Bits. W tten by the user to select the primary ADC input range as follows:
e
RN
0
1
0
1
0
1
0
1
0
.
ri
Rev. B | Page 43 of 108
Buffer Configura
ADC0+ and ADC0− are buffered
Reserved
Buffer Bypass
Reserved
Select
±20 mV (0 mV
±40 mV (0 mV
±80 mV (0 mV
±160 m (0 m
±320 m (0 m
±640 m (0 m
±1.28
±2.56
ed
V (0
V (0
V
V
V
prim
V–1
V–2.5
ary ADC input ra
–20 mV in unipo
–40 mV in unipol
–80 mV in unipo
V–160 mV in unip
V–320 mV in unip
V–640 mV in unip
.28 V in unipolar
6 V in unipolar mode)
tion
nge (V
lar mode)
lar mode)
mode)
ar mode)
olar mode)
olar mode)
olar mode)
ADuC845/ADuC847/ADuC848
REF
= 2.5 V)