ADUC842 Analog Devices, ADUC842 Datasheet - Page 26

• Manufacturer Part Number: ADUC842
• Description: Precision Analog Microcontroller: 16MIPS 8052 Flash MCU + 8-Ch 12-Bit ADC + Dual 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC842

• Mcu Core: 8052
• Mcu Speed (mips): 16
• Sram (bytes): 2304Bytes
• Gpio Pins: 34
• Adc # Channels: 8
• Other: PWM

ADuC841/ADuC842/ADuC843
ADCCON3—(ADC Control SFR 3)
The ADCCON3 register controls the operation of various
calibration modes and also indicates the ADC busy status.
SFR Address
SFR Power-On Default
Bit Addressable
Table 9. ADCCON3 SFR Bit Designations
Bit No.
7
6
5
4
3
2
1
0
Name
BUSY
RSVD
AVGS1
AVGS0
RSVD
RSVD
TYPICAL
SCAL
Description
ADC Busy Status Bit.
A read-only status bit that is set during a valid ADC conversion or during a calibration cycle.
Busy is automatically cleared by the core at the end of conversion or calibration.
Reserved. This bit should always be written as 0.
Number of Average Selection Bits.
This bit selects the number of ADC readings that are averaged during a calibration cycle.
AVGS1
0
0
1
1
Reserved. This bit should always be written as 0.
This bit should always be written as 1 by the user when performing calibration.
Calibration Type Select Bit.
This bit selects between offset (zero-scale) and gain (full-scale) calibration.
Set to 0 for offset calibration.
Set to 1 for gain calibration.
Start Calibration Cycle Bit.
When set, this bit starts the selected calibration cycle.
It is automatically cleared when the calibration cycle is completed.
F5H
00H
No
AVGS0
0
1
0
1
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Number of Averages
15
1
31
63