ADuC831: MicroConverter®, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU Data Sheet (Rev. A)11/21/2002807 K
ADuC831: Errata Sheet (Rev. B1)1/1/200045 kB
Features and Benefits
- ANALOG I/O
- 8-channel, 247 kSPS 12-bit ADC
DC performance: ±1 LSB INL
AC performance: 71 dB SNR
- DMA controller for high speed ADC-to-RAM capture
- 2 12-Bit (monotonic) voltage output DACs
- Dual output PWM/Σ-Δ DACs
- On-chip temperature sensor function ±3C
- On-chip voltage reference
- 8-channel, 247 kSPS 12-bit ADC
- 62 kBytes on-chip Flash/EE program memory
- 4 kBytes on-chip Flash/EE data memory
- Flash/EE, 100 yr retention, 100 kCycles endurance
- 2304 bytes on-chip data RAM
- 8051 based core
- 8051 compatible instruction set (16 MHz max)
- 12 interrupt sources, 2 priority levels
- Dual data pointer
- Extended 11-bit stack pointer
- See data sheet for additional features
The ADuC831 is a fully integrated 247 kSPS data acquisition system incorporating a high performance self-calibrating multi-channel 12-bit ADC, dual 12-bit DACs, and programmable 8-bit MCU on a single chip.
The microcontroller core is an 8052, and therefore 8051-instruction-set compatible with 12 core clock periods per machine cycle. 62 kBytes of nonvolatile Flash/EE program memory are provided on-chip. Four kBytes of nonvolatile Flash/EE data memory, 256 bytes RAM and 2 kBytes of extended RAM are also integrated on-chip.
The ADuC831 also incorporates additional analog functionality with two 12-bit DACs, power supply monitor, and a band gap reference. On-chip digital peripherals include two 16-bit Σ-∆ DACs, dual output 16-bit PWM, watchdog timer, time interval counter, three timers/counters, Timer 3 for baud rate generation and serial I/O ports (I2C, SPI and UART).
On-chip factory firmware supports in-circuit serial download and debug modes (via UART), as well as single-pin emulation mode via the EA pin. The ADuC831 is supported by QuickStart™ and QuickStart Plus development systems featuring low cost software and hardware development tools.
The part is specified for 3 V and 5 V operation over the extended industrial temperature range, and is available in a 52-lead plastic quad flatpack package and in a 56-lead chip scale package.
- Optical networking—laser power control
- Base station systems
- Precision instrumentation, smart sensors
- Transient capture systems
- DAS and communications systems
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Development system for evaluation of the ADuC831, 8-Channel 12-Bit ADC + Dual 12-Bit DAC + 62K-Byte Flash MCU.
The QuickStart Kits for the ADuC8x-series (8052-core) Precision Analog Microcontrollers feature serial-port download/debug capability and an assembly-source debugging environment.
ADI also provides a non-intrusive emulation POD called the USB-EA-CONVZ allowing assembly & C-source debugging.
It can be ordered separately.
Documentation & Resources
AN-282: Fundamentals of Sampled Data Systems2/14/20152131 kB
AN-660: XY-Matrix Keypad Interface to MicroConverter® (Rev. 0)2/14/2015286 kB
• AN-660 Accompanying Source CodeZIP
AN-759: Expanding the Number of DAC Outputs on the ADuC8xx and ADuC702x Families (uC012) (Rev. 0)2/14/2015112 kB
• AN-759 Companion Code (zip, 3,464 bytes)ZIP
AN-709: RTD Interfacing and Linearization Using an ADuC8xx MicroConverter® (Rev. 0)2/14/2015698 kB
• AN-709 Accompanying Files (Tools and Source Code)ZIP
AN-1139: Understanding the Parallel Programming Protocol (Rev. 0)1/24/2012174 kB
AN-1074: Understanding the Serial Download Protocol (Formerly uC004) (Rev. 0)8/10/2010245 kB
UC-019: DMA To XRAM on the ADuC831/832 (Rev. prA)7/10/2009670 kB
• uC019 FilesZIP
UC-018: Uses of the Time Interval Counter (Rev. prA)7/10/2009632 kB
• uC018 FilesZIP
UC-001: MicroConverter® I2C® Compatible Interface7/10/2009126 kB
• uC001 FilesZIP
UC-007: User Download (ULOAD) Mode7/10/20090 kB
• uC007 FilesZIP
UC-020: Migrating to the ADuC831 from the ADuC8128/3/200452 kB
UC-009: Addressing 16MB of External Data Memory8/3/2004173 kB
UC-006: A 4-wire UART-to-PC Interface8/3/2004157 K
• uC006 Gerber File (1)ZIP
• uC006 FilesZIP
• uC006 Gerber Files (2)ZIP
UG-041: ADuC8xx Evaluation Kit Getting Started User Guide8/20/2009679 kB
ADuC831 Quick Reference Guide6/2/2008392 kB
Integrated Route Taken to Pulse Oximetry12/26/2004
Software & Systems Requirements
ADuC831 Code Examples
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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