ADUC831BSZ – IC

Product Description

The ADuC831 is a fully integrated 247 kSPS data acquisition system incorporating a high performance self-calibrating multichannel 12-bit ADC, dual 12-bit DACs, and programmable 8-bit MCU on a single chip.

The microcontroller 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. Four kBytes of nonvolatile Flash/EE data memory, 256 bytes RAM and 2 kBytes of extended RAM arealso integrated on-chip.

The ADuC831 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 Σ-∆ DACs, dual output 16-bit PWM, watchdog timer, time interval counter, three timers/counters, Timer 3 for baud rate generation and serial I/O ports (I2C, SPI and UART).

On-chip factory firmware supports in-circuit serial download and debug modes (via UART), as well as single-pin emulation mode via the EA pin. The ADuC831 is supported by QuickStart™ and QuickStart Plus development systems featuring low cost software and hardware development tools.

The part is specified for 3 V and 5 V operation over the extended industrial temperature range, and is available in a 52-lead plastic quad flatpack package and in a 56-lead chip scale package.

Features

• ANALOG I/O
  8-Channel, 247 kSPS 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 kBytes On-Chip Flash/EE Program Memory
  4 kBytes On-Chip Flash/EE Data Memory
  Flash/EE, 100 Yr Retention, 100 kCycles 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