ADUC812 datasheet(1/31 Pages) AD

Numer części	ADUC812

Szczegółowy opis	MicroConverter?? Multichannel 12-Bit ADC with Embedded FLASH MCU

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Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

a

ADuC812

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

MicroConverter™, Multichannel

12-Bit ADC with Embedded FLASH MCU

FUNCTIONAL BLOCK DIAGRAM

MICROCONTROLLER

8051-COMPATIBLE

MICROCONTROLLER

POWER SUPPLY

MONITOR

WATCHDOG

TIMER

2-WIRE

SERIAL I/O

640 BYTES FLASH/EE

DATA MEMORY

256

8 USER

RAM

SPI

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

BUF

ADC

CONTROL

AND

CALIBRATION

LOGIC

T/H

TEMP

SENSOR

2.5V

REF

AIN

MUX

BUF

12-BIT

DAC0

BUF

MOSI/

SDATA

MISO

(P3.3)

SCLOCK

RxD

(P3.1)

TxD

(P3.0)

XTAL

2

XTAL

1

DGND

DVDD

AGND

AVDD

DAC0

DAC1

T0 (P3.4)

T1 (P3.5)

T2 (P1.0)

T2EX (P1.1)

INT0 (P3.2)

INT1 (P3.3)

ALE

PSEN

EA

RESET

ADuC812

P3.0

P3.7

P2.0

P2.7

P1.0

P1.7

P0.0

P0.7

AIN0 (P1.0)

AIN7 (P1.7)

VREF

CREF

ON-CHIP SERIAL

DOWN LOADER

8K BYTES FLASH/EE

PROGRAM MEMORY

DAC

CONTROL

3

16-BIT

TIMER/COUNTERS

OSC

UART

MUX

12-BIT

DAC1

FEATURES

ANALOG I/O

8-Channel, High Accuracy 12-Bit ADC

On-Chip, 40 ppm/ C Voltage Reference

High Speed 200 kSPS

DMA Controller for High Speed ADC-to-RAM Capture

Two 12-Bit Voltage Output DACs

On-Chip Temperature Sensor Function

MEMORY

8K Bytes On-Chip Flash/EE Program Memory

640 Bytes On-Chip Flash/EE Data Memory

On-Chip Charge Pump (No Ext. VPP Requirements)

256 Bytes On-Chip Data RAM

16M Bytes External Data Address Space

64K Bytes External Program Address Space

8051-COMPATIBLE CORE

12 MHz Nominal Operation (16 MHz Max)

Three 16-Bit Timer/Counters

32 Programmable I/O lines

High Current Drive Capability—Port 3

Nine Interrupt Sources, Two Priority Levels

POWER

Specified for 3 V and 5 V Operation

Normal, Idle and Power-Down Modes

ON-CHIP PERIPHERALS

UART Serial I/O

2-Wire (I

2C®-Compatible) and SPI® Serial I/O

Watchdog Timer

Power Supply Monitor

APPLICATIONS

Intelligent Sensors (IEEE 1451.2-Compatible)

Battery Powered Systems (Portable PCs, Instruments,

Monitors)

Transient Capture Systems

DAS and Communications Systems

GENERAL DESCRIPTION

The ADuC812 is a fully integrated 12-bit data acquisition

system incorporating a high performance self-calibrating

multichannel ADC, two 12-bit DACs and programmable 8-bit

(8051-compatible) MCU on a single chip.

The programmable 8051-compatible core is supported by

8K bytes Flash/EE program memory, 640 bytes Flash/EE data

memory and 256 bytes data SRAM on-chip.

Additional MCU support functions include Watchdog Timer,

Power Supply Monitor and ADC DMA functions. 32 Program-

mable I/O lines, I

2C-compatible, SPI and Standard UART

Serial Port I/O are provided for multiprocessor interfaces and

I/O expansion.

Normal, idle and power-down operating modes for both the

MCU core and analog converters allow for flexible power man-

agement schemes suited to low power applications. The part is

specified for 3 V and 5 V operation over the industrial tempera-

ture range and is available in a 52-lead, plastic quad flatpack

package.

I

2C is a registered trademark of Philips Corporation.

MicroConverter is a trademark of Analog Devices, Inc.

SPI is a registered trademark of Motorola Inc.

Podobny numer części - ADUC812

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