ADUC824 Analog Devices, ADUC824 Datasheet - Page 29

• Manufacturer Part Number: ADUC824
• Description: Precision Analog Microcontroller: 1MIPS 8052 MCU + 8kB Flash + 16/24-Bit ADC + 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC824

• Mcu Core: 8052
• Mcu Speed (mips): 1
• Sram (bytes): 256Bytes
• Gpio Pins: 34
• Adc # Channels: 4

ICON (Current Sources Control Register)
Used to control and configure the various excitation and burnout current source options available on-chip.
SFR Address
Power-On Default Value
Bit Addressable
Bit
7
6
5
4
3
2
1
0
ADC0H/ADC0M/ADC0L (Primary ADC Conversion Result Registers)
These three 8-bit registers hold the 24-bit conversion result from the Primary ADC.
SFR Address
Power-On Default Value
Bit Addressable
ADC1H/ADC1L (Auxiliary ADC Conversion Result Registers)
These two 8-bit registers hold the 16-bit conversion result from the Auxiliary ADC.
SFR Address
Power-On Default Value
Bit Addressable
Both current sources can be enabled to the same external pin, yielding a 400 µA current source.
—
Name
—
BO
ADC1IC
ADC0IC
I2PIN
I1PIN
I2EN
I1EN
B
O
ADC0H
ADC0M
ADC0L
00H
No
ADC1H
ADC1L
00H
No
D5H
00H
No
A
Description
Reserved for Future Use
Burnout Current Enable Bit
Set by user to enable both transducer burnout current sources in the primary ADC signal paths.
Cleared by user to disable both transducer burnout current sources.
Auxiliary ADC Current Correction Bit
Set by user to allow scaling of the Auxiliary ADC by an internal current source calibration word.
Primary ADC Current Correction Bit
Set by user to allow scaling of the Primary ADC by an internal current source calibration word.
Current Source-2 Pin Select Bit
Set by user to enable current source-2 (200 µA) to external pin 3 (P1.2/DAC/IEXC1).
Cleared by user to enable current source-2 (200 µA) to external pin 4 (P1.3/AIN5/IEXC2).
Current Source-1 Pin Select Bit
Set by user to enable current source-1 (200 µA) to external pin 4 (P1.3/AIN5/IEXC2).
Cleared by user to enable current source-1 (200 µA) to external pin 3 (P1.2/DAC/IEXC1).
Current Source-2 Enable Bit
Set by user to turn on excitation current source-2 (200 µA).
Cleared by user to turn off excitation current source-2 (200 µA).
Current Source-1 Enable Bit
Set by user to turn on excitation current source-1 (200 µA).
Cleared by user to turn off excitation current source-1 (200 µA).
D
C
I 1
C
Table VIII. ICON SFR Bit Designations
A
High Data Byte
Middle Data Byte
Low Data Byte
All Three registers
All Three registers
High Data Byte
Low Data Byte
Both Registers
Both Registers
D
C
I 0
C
2 I
P
I
N
DBH
DAH
D9H
DDH
DCH
1 I
P
I
N
2 I
E
N
ADuC824
1 I
E
N