ADUC831BSZ-REEL Analog Devices 8bit MCU

ADUC831BSZ-REEL Overview

The ADuC831 is a fully integrated 247 kSPS data acquisitionsystem incorporating a high performance self-calibrating multi-channel12-bit ADC, dual 12-bit DACs, and programmable8-bit MCU on a single chip.

The microcontroller core is an 8052, and therefore 8051-instruction-set compatible with 12 core clock periods per machinecycle. 62 kBytes of nonvolatile Flash/EE program memory areprovided on-chip. Four kBytes of nonvolatile Flash/EE datamemory, 256 bytes RAM and 2 kBytes of extended RAM arealso integrated on-chip.

The ADuC831 also incorporates additional analog functionalitywith two 12-bit DACs, power supply monitor, and a band gapreference. On-chip digital peripherals include two 16-bit Σ-∆DACs, dual output 16-bit PWM, watchdog timer, time intervalcounter, three timers/counters, Timer 3 for baud rate generationand serial I/O ports (I2C, SPI and UART).

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

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

Applications

Optical networking—laser power control
Base station systems
Precision instrumentation, smart sensors
Transient capture systems
DAS and communications systems

Features

ANALOG I/O
- 8-channel, 247 kSPS 12-bit ADCDC performance: ±1 LSB INLAC performance: 71 dB SNR
- DMA controller for high speed ADC-to-RAM capture
- 2 12-Bit (monotonic) voltage output DACs
- Dual output PWM/Σ-Δ 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
See data sheet for additional features