Analog Devices ADuC841 2 3 pra Datasheet

REV. PrA 05/19/2003

MicroConverter® 12-Bit ADCs and DACs with Embedded

High Speed 62 kB Flash MCU

Preliminary Technical Data ADuC841/ADuC842/ADuC843

FEATURES

Pin compatable
Upgrade to ADuC812/ADuC831/ADuC832
Increased performance
Single- cycle 16 MIPS 8052 core
High speed 400 kSPS 12-Bit ADC
Increased memory
Up to 62 kBytes on-chip Flash/EE program memory
4 kBytes on-chip Flash/EE data memory
In ci rcuit reprogrammable
Flash/EE, 100 year retention, 100 kCycles endurance
2304 bytes on-chip data RAM
Smaller package
8 mm x 8 mm chip scale package

52 pin PQFP—pin compatable upgrade

Analog I/O
8-channel, 400 kSPS high accuracy, 12-bit ADC
On-chip, 20 ppm/°C voltage reference
DMA controller, high speed ADC-to-RAM capture
Two 12-bit voltage output DACs*
Dual output PWM ?-? DACs
On-chip temperature monitor function

8051 based core
8051 compatible instruction set (16.7 MHz max)
High performance single-cycle core

32 kHz ext crystal,on-chip programmable PLL**
12 interrupt sources, two priority levels
Dual data pointers, extended 11-bit stack pointer

On-chip peripherals
Time interval counter (TIC)
UART, I
Watchdog timer (WDT)
Power supply monitor (PSM)

Power
Normal: 6 mA @ 5 V (core CLK = 2.098 MHz)**
Power-down: 15µA @ 3 V**

Development Tools

IDE based, assembly, and C sourc e debugging

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 that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.

2

C®, and SPI® Serial I/O

Low cost, comprehensive development system

incorporating nonintrusive single-pin emulation

APPLICATIONS

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

FUNCTIONAL BLOCK DIAGRAM

12-BIT

ADuC841/ADuC842/ADuC 843

ADC0
ADC1

ADC5
ADC6

ADC7

MUX

TEMP

SENSOR

INTERNAL

BAND GAP

VREF

V

REF

T/H

PLL**

OSC

12-BIT ADC

HARDWARE

CALIBRATON

16 MIPS 8051-BASED MCU WITH ADDITIONAL

62 k BYTES FLASH/EE PROGRAM MEMORY

4 k BYTES FLASH/EE DATA MEMORY

2304 BYTES USER RAM

3316 BIT TIMERS

1

3

REAL TIME CLOCK

43 PARALLEL

PORTS

XTAL 2XTAL1

* ADuC841/ADuC842 Only
** ADuC842/ADuC843 Only, ADuC841 driven directly by external crystal.

Purchase of licensed I2C components of Analog Devices or one of its sublicensed

Associated Companies conveys a license for the purchaser under the Philips I
Patent Rights to use these components in an I
conforms to the I

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

2

C Standard Specification as defined by Philips.

Tel: [phone] www.analog.com
Fax: [phone] © 2003 Analog Devices, Inc. All rights reserved.

2

C system, provided that the system

DAC

12-BIT

DAC

16-BIT

S- D DAC

16-BIT

S- D DAC

16-BIT

PWM

16-BIT

PWM

PERIPHERALS

POWER SUPPLY MON

WATCHDOG TIMER

UART,I

2

C, AND SPI

SERIAL I/O

BUF

BUF

MUX

DAC*

DAC*

PWM0

PWM1

2

C