ADUC831 1.3MIPS 8052 MCU + 62kB Flash + 8-Ch 12-Bit ADC + Dual 12-Bit DAC

The ADUC832 MicroConverter is a fully integrated 12-bit data acquisition system-on-a-chip. Like all of Analog Devices' MicroConverter products, it features precision A/D and D/A conversion along with a Flash Microcontroller on a single chip. The ADUC832 is completely hardware backward compatible with the ADUC812, although it requires a different crystal. For full hardware backward compatibility with the ADUC812, the ADUC831 should be used instead. The ADUC832 is available in 52-pin PQFP or 56-pin CSP packages and operates on a 3V or 5V power supply. It serves as a complete smart transducer front end, integrating a high-performance self-calibrating multichannel 12-bit ADC, dual 12-bit DACs, and a programmable 8-bit MCU on a single chip. The device operates from a 32 kHz crystal with an on-chip PLL generating a high-frequency clock of 16.77 MHz. This clock is routed through a programmable clock divider, from which the MCU core clock operating frequency is derived. The microcontroller core is based on the 8052 architecture, making it compatible with the 8051 instruction set, featuring 12 core clock periods per machine cycle. The chip provides 62 kBytes of non-volatile Flash EE program memory, 4 kBytes of non-volatile Flash EE data memory, 256 bytes of RAM, and 2 kBytes of extended RAM. Additionally, the ADUC832 incorporates enhanced analog functionality with two 12-bit DACs, a power supply monitor, and a bandgap reference. On-chip digital peripherals include two 16-bit DACs, dual output 16-bit PWM, a watchdog timer, a time interval counter, three timer counters (with Timer 3 designated for baud rate generation), and two serial I/O ports (SPI, I2C, and UART) provided by Analog Devices, Inc.

The ADUC832 MicroConverter is designed to facilitate a wide range of applications, particularly in the fields of industrial automation, medical instrumentation, and sensor interfacing. Its integration of high-performance analog and digital components on a single chip significantly reduces the complexity and size of electronic systems. The 12-bit ADC allows for precise measurement of analog signals, while the dual DACs enable the generation of accurate analog outputs for control applications.

The microcontroller core, based on the 8052 architecture, supports a variety of programming environments and development tools, making it accessible for developers familiar with the 8051 instruction set. The extensive memory resources, including both program and data memory, ensure that complex algorithms and data processing tasks can be executed efficiently.

The programmable clock divider is a critical feature, allowing for flexible adjustment of the MCU clock frequency to meet specific application requirements. This adaptability, combined with the integrated communication interfaces (SPI, I2C, and UART), facilitates seamless integration into existing systems and enhances connectivity with other devices.

The ADUC832's built-in watchdog timer and various timer counters provide essential functionality for real-time applications, ensuring system reliability and facilitating time-based operations. The presence of a power supply monitor and bandgap reference further enhances the device's robustness, enabling it to operate reliably across varying conditions.

Overall, the ADUC832 MicroConverter represents a versatile solution for modern electronic design, offering a compact and efficient platform for data acquisition and control tasks.The ADUC832 MicroConverter is a fully integrated 12-bit data acquisition system-on-a-chip. Like all of ADI`s MicroConverter products, it features precision A/D & D/A conversion and a Flash Microcontroller on a single chip. The ADUC832 is 100% hardware backward compatible with the ADUC812 except that it requires a different crystal.

If you require full hardware backward compatibility with the ADUC812 use the ADUC831 instead. The ADUC832 is available in 52-pin PQFP or 56-pin CSP packages and operates on a 3V or 5V power supply. The ADUC832 is a complete smart transducer front end, integrat- ing a high performance self-calibrating multichannel 12-bit ADC dual 12-bit DACs and programmable 8-bit MCU on a single chip.

The device operates from a 32 kHz crystal with an on-chip PLL generating a high frequency Clock of 16. 77 MHz. This Clock is, in turn, routed through a programmable Clock divider from which the MCU core Clock operating frequency is generated.

The micro- controller core is an 8052 and therefore 8051 instruction set compatible with 12 core Clock periods per machine cycle. 62 kBytes of nonvolatile Flash EE program memory are provided on-chip. 4 kBytes of nonvolatile Flash EE data memory, 256 bytes RAM, and 2 kBytes of extended RAM are also integrated on-chip.

The ADUC832 also incorporates additional Analog functionality with two 12-bit DACs power supply monitor, and a band gap reference. On-chip digital peripherals include two 16-bit - DACs dual output 16-bit PWM, watchdog Timer time interval Counter three Timers Counters Timer 3 for baud rate generation, 2 and serial I/O ports (SPI, I C, and UART) By Analog Devices, Inc.

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