ADUC7021BCPZ32-RL7

Overview

The ADUC7021BCPZ32-RL7 is a precision analog microcontroller from Analog Devices, integrating a 1 MSPS, 12-bit ADC with up to 16 input channels and an ARM7TDMI core. It features 62 kB of Flash/EE memory and 8 kB of SRAM. The device supports single-ended and differential modes with a 0 V to VREF input range. It includes on-chip peripherals such as a voltage reference, temperature sensor, comparator, UART, I2C, SPI, and GPIO ports.

Feature Summary

• Integrates a high-performance multichannel 12-bit SAR ADC capable of 1 MSPS sampling rates.
• Incorporates an ARM7TDMI 16-bit/32-bit RISC microcontroller core for processing.
• Includes on-chip nonvolatile Flash/EE memory and static RAM for code and data storage.
• Features integrated analog peripherals including a low drift band gap reference and temperature sensor.

Applications

• Industrial control and automation systems
• Smart sensors and precision instrumentation
• Base station systems and optical networking

Procurement Notes

Verify the specific suffix RL7 indicates tape and reel packaging when sourcing. Confirm the BCPZ designation corresponds to the LFCSP package type required for your PCB layout. Ensure the operating voltage range of 2.7 V to 3.6 V matches your system power supply design. Check for RoHS compliance documentation if environmental regulations apply to your deployment.

Selection Notes

Select this component when a combined MCU and high-speed data acquisition system is required in a single package. The ADuC7021 model specifically lacks DAC outputs compared to other variants in the family, maximizing available pins for additional ADC inputs. Consider the 41.78 MHz internal clock speed and available serial interfaces for communication requirements.

Part Context

This part belongs to the ADuC70xx MicroConverter family, which combines analog and digital functions on a single chip. The ADUC7021 variant is distinguished by its specific pinout and peripheral configuration, particularly the absence of onboard DACs found in models like the ADuC7020 or ADuC7026. It utilizes the ARM7TDMI architecture common across the series.

Replacement Considerations

Direct replacements within the same family include ADUC7020, ADUC7022, ADUC7024, ADUC7025, ADUC7026, ADUC7027, ADUC7028, and ADUC7029. Verify pin compatibility and peripheral availability (such as DAC presence) before substituting, as these vary significantly between models.

FAQ

How many ADC input channels are available on the ADUC7021?

The ADUC7021 provides up to 16 ADC input channels. This includes dedicated single-ended inputs and additional channels multiplexed with pins that would serve as DAC outputs on other models in the family.

What is the maximum sampling rate of the integrated ADC?

The integrated 12-bit SAR ADC operates at a maximum sampling rate of 1 MSPS (Mega Samples Per Second).

Does the ADUC7021 include digital-to-analog converters (DACs)?

No, the ADUC7021 model does not include buffered voltage output DACs. These are available only on specific models such as the ADuC7020, ADuC7026, ADuC7028, and ADuC7029.