ADuC843
Precision Analog Microcontroller: 16MIPS 8052 Flash MCU + 8-Ch 12-Bit ADC
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Overview
Features and Benefits
- Pin compatible upgrade of ADuC812/ADuC831/ADuC832
- Increased performance
- Single-cycle 20 MIPS 8052 core
- High speed 420 kSPS 12-bit ADC
- Increased memory
- Up to 62 kBytes on-chip Flash/EE program memory
- 4 kBytes on-chip Flash/EE data memory
- In-circuit reprogrammable
- Flash/EE, 100 year retention, 100 kCycle endurance
- 2304 bytes on-chip data RAM
- Smaller package
- 8 mm × 8 mm chip scale package
- 52-lead PQFP—pin-compatible upgrade
- Increased performance
- Analog I/O
- 8-channel, 420 kSPS high accuracy, 12-bit ADC
- On-chip, 15 ppm/°C voltage reference
- DMA controller, high speed ADC-to-RAM capture
- Dual output PWM Σ-Δ DACs
- On-chip temperature monitor function
- 8052 based core
- 8051 compatible instruction set (20 MHz max)
- High performance single-cycle core
- 32 kHz external crystal, on-chip programmable PLL
- 12 interrupt sources, 2 priority levels
- Dual data pointers, extended 11-bit stack pointer
- On-chip peripherals
- Time interval counter (TIC)
- UART, I2C®, and SPI® Serial I/O
- Watchdog timer (WDT)
- Power supply monitor (PSM)
- Power
- Normal: 4.5 mA @ 3 V (core CLK = 2.098 MHz)
- Power-down: 10 μA @ 3 V
- Development tools
- Low cost, comprehensive development system incorporating nonintrusive single-pin emulation,
- IDE based assembly and C source debugging
Product Details
The ADuC841/ADuC842/ADuC843 are complete smart transducer front ends, that integrates a high performance self-calibrating multichannel ADC, a dual DAC, and an optimized single-cycle 20 MHz 8-bit MCU (8051 instruction set compatible) on a single chip.
The ADuC841 and ADuC842 are identical with the exception of the clock oscillator circuit; the ADuC841 is clocked directly from an external crystal up to 20 MHz whereas the ADuC842 uses a 32 kHz crystal with an on-chip PLL generating a programmable core clock up to 16.78 MHz.
The ADuC843 is identical to the ADuC842 except that the ADuC843 has no analog DAC outputs.
The microcontroller is an optimized 8052 core offering up to 20 MIPS peak performance. Three different memory options are available offering up to 62 kBytes of nonvolatile Flash/EE program memory. Four kBytes of nonvolatile Flash/EE data memory, 256 bytes RAM, and 2 kBytes of extended RAM are also integrated on-chip.
The parts also incorporate 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-Δ. DACs, a dual output 16-bit PWM, a watchdog timer, a time interval counter, three timers/counters, and three serial I/O ports (SPI, I2C, and UART).
On the ADuC812 and the ADuC832, the I2C and SPI interfaces share some of the same pins. For backwards compatibility, this is also the case for the ADuC841/ADuC842/ADuC843.
However, there is also the option to allow SPI operate separately on P3.3, P3.4, and P3.5, while I2C uses the standard pins. The I2C interface has also been enhanced to offer repeated start, general call, and quad addressing.
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.
Applications
- Optical networking—laser power control
- Base station systems
- Precision instrumentation, smart sensors
- Transient capture systems
- DAS and communications systems
Product Categories
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)
Documentation & Resources
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AN-282: Fundamentals of Sampled Data Systems2/14/2015PDF2131 kB
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AN-660: XY-Matrix Keypad Interface to MicroConverter® (Rev. 0)2/14/2015PDF286 kB
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• AN-660 Accompanying Source Code
ZIP -
AN-759: Expanding the Number of DAC Outputs on the ADuC8xx and ADuC702x Families (uC012) (Rev. 0)2/14/2015PDF112 kB
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• AN-759 Companion Code (zip, 3,464 bytes)
ZIP -
AN-348: Avoiding Passive-Component Pitfalls2/14/2015PDF931 kB
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AN-709: RTD Interfacing and Linearization Using an ADuC8xx MicroConverter® (Rev. 0)2/14/2015PDF698 kB
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• AN-709 Accompanying Files (Tools and Source Code)
ZIP -
AN-1139: Understanding the Parallel Programming Protocol (Rev. 0)1/24/2012PDF174 kB
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AN-1074: Understanding the Serial Download Protocol (Formerly uC004) (Rev. 0)8/10/2010PDF245 kB
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UC-009: Addressing 16MB of External Data Memory8/3/2004PDF173 kB
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UC-006: A 4-wire UART-to-PC Interface8/3/2004PDF157 K
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• uC006 Gerber File (1)
ZIP -
• uC006 Files
ZIP -
• uC006 Gerber Files (2)
ZIP
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UG-041: ADuC8xx Evaluation Kit Getting Started User Guide8/20/2009PDF679 kB
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ADuC842/ADuC843 Quick Reference Guide6/2/2008PDF98 kB
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Integrated Route Taken to Pulse Oximetry12/26/2004
Software & Systems Requirements
Code Examples
ADuC843 Code Examples
Design Resources
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.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADUC843BCP32Z-5 | Material Declaration | Reliability Data | 56-Lead LFCSP (8mm x 8mm w/ EP) | |
| ADUC843BCP62Z-5 | Material Declaration | Reliability Data | 56-Lead LFCSP (8mm x 8mm w/ EP) | |
| ADUC843BCPZ32-3 | Material Declaration | Reliability Data | 56-Lead LFCSP (8mm x 8mm w/ EP) | |
| ADUC843BCPZ8-3 | Material Declaration | Reliability Data | 56-Lead LFCSP (8mm x 8mm w/ EP) | |
| ADUC843BCPZ8-5 | Material Declaration | Reliability Data | 56-Lead LFCSP (8mm x 8mm w/ EP) | |
| ADUC843BSZ62-3 | Material Declaration | Reliability Data | 52-Lead MQFP (10mm x 10mm) | |
| ADUC843BSZ62-5 | Material Declaration | Reliability Data | 52-Lead MQFP (10mm x 10mm) | |
| Wafer Fabrication Data |
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.