ADUC842BCPZ32-5 8052 Core Products by Analog Devices

Status: Production
Series: ADUC842
RoHS: Compliant
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The ADuC841/ADuC842/ADuC843are 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 aprogrammable 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 arealso 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.

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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
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
Two 12-bit voltage output DACs
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)
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

Alternative Descriptions

Microconverter 1-cycle version | Analog Devices

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Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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