ADUC831BSZ – IC

ADUC831BSZ – IC

The ADuC831 is a single-chip data acquisition system that integrates a high-performance, self-calibrating, multichannel 12-bit ADC, dual 12-bit DACs, and a programmable 8-bit MCU. It operates at 247 kSPS.

The MCU is an 8052 core that is compatible with the 8051 instruction set and has 12 core clock periods per machine cycle. It has 62 kBytes of on-chip nonvolatile Flash/EE program memory, 4 kBytes of on-chip nonvolatile Flash/EE data memory, 256 bytes of RAM, and 2 kBytes of extended RAM.

The ADuC831 also provides additional analog features, such as two 12-bit DACs, a power supply monitor, and a band gap reference. Its digital peripherals include two 16-bit Σ-∆ DACs, a dual output 16-bit PWM, a watchdog timer, a time interval counter, three timers/counters, Timer 3 for baud rate generation, and serial I/O ports (I2C, SPI, and UART).

The on-chip factory firmware supports in-circuit serial download and debug modes (via UART) and single-pin emulation mode via the EA pin. The ADuC831 is compatible with the QuickStart™ and QuickStart Plus development systems that offer low-cost software and hardware development tools.

The part can operate at 3 V or 5 V over the extended industrial temperature range. It is available in a 52-lead plastic quad flatpack package and a 56-lead chip scale package.

Features

• ANALOG I/O
  8-Channel, 247 k SPS 12-Bit ADC
  -DC Performance: 1 LSB INL
  -AC Performance: 71 dB SNR
  DMA Controller for High-Speed ADC-to-RAM Capture
  2 12-Bit (Monotonic) Voltage Output DACs
  Dual Output PWM/ DACs
  On-Chip Temperature Sensor Function 3C
  On-Chip Voltage Reference
• Memory
  62 k Bytes On-Chip Flash/EE Program Memory
  4 k Bytes On-Chip Flash/EE Data Memory
  Flash/EE, 100 Yr. Retention, 100 k Cycles Endurance.
  2304 Bytes On-Chip Data RAM
  8051 Based Core
  8051 Compatible Instruction Set (16 MHz Max)
  12 Interrupt Sources, 2 Priority Levels
  Dual Data Pointer
  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)
• Power
  Specified for 3 V and 5 V Operation
  Normal, Idle, and Power-Down Modes
  Power-Down: 20 A @ 3 V

Package Includes

• 1 x ADUC831BSZ – IC