ADUC8  -  Series DataSheet
ADuC831  -  MicroConverter?, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU  -  Analog Devices  -  8051

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

APPLICATIONS
Optical Networking—Laser Power Control
Base Station Systems
Precision Instrumentation, Smart Sensors
Transient Capture Systems
DAS and Communications Systems
Pin compatible upgrade to existing ADuC812 systems  that require additional code or data memory. Runs from 1 MHz–16 MHz to external crystal.
The ADuC832 is also available. Functionally is the same as the ADuC831, except the ADuC832 runs from a 32 kHz external crystal with on-chip PLL.
MicroConverter is a registered trademark and QuickStart is a trademark of Analog Devices, Inc.
SPI is a registered trademark of Motorola, Inc.
I2C is a registered trademark of Philips Corporation.

GENERAL 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 are also 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-Δ 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. A functional block diagram of the ADuC831 is shown above with a more detailed block diagram shown in Figure 1.
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.