Overview
The ADUC843BSZ62-5 is a precision analog microcontroller from Analog Devices Inc., part of the ADuC841/ADuC842/ADuC843 series. This device integrates a high-performance self-calibrating multichannel analog-to-digital converter (ADC), and an optimized single-cycle 20 MHz 8-bit microcontroller (MCU) compatible with the 8051 instruction set. The ADUC843 is specifically designed without analog DAC outputs, distinguishing it from the ADuC841 and ADuC842 models. It offers advanced features such as a DMA controller, high-speed ADC-to-RAM capture, and various digital peripherals, making it a robust solution for smart transducer front ends and other demanding applications.
Key Specifications
| Parameter | Value |
|---|---|
| Microcontroller Core | 8052 core, up to 20 MIPS peak performance |
| ADC | 8-channel, 12-bit, 420 kSPS |
| DAC | No analog DAC outputs (distinct from ADuC841/ADuC842) |
| Memory | Up to 62 kBytes nonvolatile Flash/EE program memory, 4 kBytes nonvolatile Flash/EE data memory, 256 bytes RAM, 2 kBytes extended RAM |
| Clock | Uses a 32 kHz crystal with an on-chip PLL generating a programmable core clock up to 16.78 MHz |
| Package | 52-Lead MQFP (10mm x 10mm) |
| Supply Voltage | 3 V or 5 V nominal |
| Serial Interfaces | UART, I2C, SPI |
| Other Peripherals | Watchdog timer, time interval counter, three timers/counters, 16-bit Σ-Δ DAC, 16-bit PWM |
Key Features
- High-performance self-calibrating multichannel ADC with 12-bit resolution and 420 kSPS sampling rate.
- Optimized single-cycle 20 MHz 8-bit MCU with 8051 instruction set compatibility.
- No analog DAC outputs, distinguishing it from ADuC841 and ADuC842 models.
- DMA controller and high-speed ADC-to-RAM capture capabilities.
- On-chip factory firmware supporting in-circuit serial download and debug modes via UART and single-pin emulation mode via the EA pin.
- Enhanced I2C interface with repeated start, general call, and quad addressing.
- Various digital peripherals including watchdog timer, time interval counter, three timers/counters, 16-bit Σ-Δ DAC, and 16-bit PWM.
Applications
The ADUC843BSZ62-5 is designed for use in smart transducer front ends, industrial control systems, medical devices, and other applications requiring high-precision analog-to-digital conversion and robust microcontroller functionality. Its integrated features make it suitable for a wide range of embedded systems that demand high accuracy and reliability.
Q & A
- What is the primary difference between the ADUC843 and ADUC841/ADuC842 models? The ADUC843 does not have analog DAC outputs, unlike the ADuC841 and ADuC842 models.
- What is the sampling rate of the ADC in the ADUC843? The ADC has a sampling rate of 420 kSPS.
- What type of microcontroller core does the ADUC843 use? The ADUC843 uses an optimized single-cycle 20 MHz 8-bit MCU compatible with the 8051 instruction set.
- What are the memory options available in the ADUC843? The ADUC843 offers up to 62 kBytes of nonvolatile Flash/EE program memory, 4 kBytes of nonvolatile Flash/EE data memory, 256 bytes RAM, and 2 kBytes of extended RAM.
- What are the serial interfaces supported by the ADUC843? The ADUC843 supports UART, I2C, and SPI serial interfaces.
- Does the ADUC843 support in-circuit serial download and debug modes? Yes, the ADUC843 supports in-circuit serial download and debug modes via UART and single-pin emulation mode via the EA pin.
- What is the package type of the ADUC843BSZ62-5? The ADUC843BSZ62-5 comes in a 52-Lead MQFP (10mm x 10mm) package.
- What are the supply voltage options for the ADUC843? The ADUC843 can operate with a supply voltage of 3 V or 5 V nominal.
- Does the ADUC843 have any additional analog functionality? Yes, it includes a power supply monitor, band gap reference, and other analog peripherals.
- What are some typical applications of the ADUC843? The ADUC843 is typically used in smart transducer front ends, industrial control systems, medical devices, and other embedded systems requiring high precision and reliability.
