Overview
The ADUC842BSZ62-5 is a precision analog microcontroller from Analog Devices Inc., designed as a complete smart transducer front end. This device 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. It is a pin-compatible upgrade of the ADuC812, ADuC831, and ADuC832, offering increased performance and memory. The ADUC842 is particularly suited for applications requiring high-speed analog-to-digital conversion, precise analog output, and robust microcontroller functionality.
Key Specifications
| Specification | Details |
|---|---|
| Microcontroller Core | 8052 core, 20 MIPS peak performance, 8051 instruction set compatible |
| Clock Source | 32 kHz external crystal with on-chip PLL generating a programmable core clock up to 16.78 MHz |
| Memory | Up to 62 kBytes nonvolatile Flash/EE program memory, 4 kBytes nonvolatile Flash/EE data memory, 2304 bytes RAM, 2 kBytes extended RAM |
| ADC | 8-channel, 420 kSPS, 12-bit high accuracy ADC |
| DAC | Two 12-bit voltage output DACs |
| Package | 52-Lead Plastic Quad Flat Package (MQFP), 10mm x 10mm |
| Operating Temperature | –40°C to +85°C |
| Serial I/O | UART, I2C, and SPI |
| Other Peripherals | Watchdog timer, power supply monitor, time interval counter, three timers/counters, dual output 16-bit PWM, 16-bit Σ-Δ DACs |
Key Features
- High-speed 420 kSPS 12-bit ADC with DMA controller for high-speed ADC-to-RAM capture
- Dual 12-bit voltage output DACs and 16-bit Σ-Δ DACs
- On-chip temperature monitor and power supply monitor
- Single-cycle 20 MIPS 8052 core with 8051 instruction set compatibility
- In-circuit reprogrammable Flash/EE memory with 100-year retention and 100 kCycle endurance
- Multiple serial I/O interfaces including UART, I2C, and SPI
- Watchdog timer, time interval counter, and three timers/counters
- Dual output 16-bit PWM and 16-bit Σ-Δ DACs
Applications
- Industrial process control systems requiring precise analog-to-digital conversion and control
- Medical instrumentation and diagnostic equipment needing high accuracy and reliability
- Automotive systems, including safety and driver assistance systems
- Scientific instrumentation and data acquisition systems
- Embedded systems in various industries such as aerospace, consumer electronics, and more
Q & A
- What is the core architecture of the ADUC842?
The ADUC842 features an optimized single-cycle 20 MHz 8-bit MCU with an 8052 core, compatible with the 8051 instruction set.
- What is the maximum clock frequency of the ADUC842?
The ADUC842 uses a 32 kHz external crystal with an on-chip PLL generating a programmable core clock up to 16.78 MHz.
- How much memory does the ADUC842 have?
The ADUC842 has up to 62 kBytes of nonvolatile Flash/EE program memory, 4 kBytes of nonvolatile Flash/EE data memory, 2304 bytes of RAM, and 2 kBytes of extended RAM.
- What are the key analog features of the ADUC842?
The ADUC842 includes an 8-channel, 420 kSPS, 12-bit high accuracy ADC and two 12-bit voltage output DACs.
- What serial interfaces are available on the ADUC842?
The ADUC842 supports UART, I2C, and SPI serial interfaces.
- Does the ADUC842 have any power management features?
Yes, the ADUC842 includes a power supply monitor and watchdog timer.
- What is the operating temperature range of the ADUC842?
The operating temperature range is –40°C to +85°C.
- What package options are available for the ADUC842?
The ADUC842 is available in a 52-Lead Plastic Quad Flat Package (MQFP), 10mm x 10mm.
- Is the ADUC842 backward compatible with other models?
Yes, the ADUC842 is pin-compatible with the ADuC812, ADuC831, and ADuC832.
- What are some typical applications of the ADUC842?
The ADUC842 is used in industrial process control, medical instrumentation, automotive systems, scientific instrumentation, and various embedded systems.
