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ADUC843BCP32-3

更新时间: 2024-11-06 22:39:27
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亚德诺 - ADI 转换器闪存微控制器
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88页 877K
描述
MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU

ADUC843BCP32-3 数据手册

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®
MicroConverter 12-Bit ADCs and DACs with  
Embedded High Speed 62-kB Flash MCU  
ADuC841/ADuC842/ADuC843  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
Pin compatable ugrade of ADuC812/ADuC831/ADuC832  
12-BIT  
DAC  
DAC1  
ADuC841/ADuC842/ADuC843  
Increased performance  
BUF  
Single-cycle 20 MIPS 8052 core  
High speed 420 kSPS 12-bit ADC  
Increased memory  
12-BIT  
DAC  
DAC1  
BUF  
ADC0  
ADC1  
T/H  
12-BIT ADC  
Up to 62 kBytes on-chip Flash/EE program memory  
4 kBytes on-chip Flash/EE data memory  
In-circuit reprogrammable  
Flash/EE, 100 year retention, 100 kCycle endurance  
2304 bytes on-chip data RAM  
Smaller package  
16-BIT  
Σ-DAC  
MUX  
ADC5  
16-BIT  
Σ-DAC  
ADC6  
ADC7  
PWM0  
PWM1  
HARDWARE  
CALIBRATON  
MUX  
16-BIT  
PWM  
TEMP  
SENSOR  
8 mm × 8 mm chip scale package  
52-lead PQFP—pin compatable upgrade  
16-BIT  
PWM  
20 MIPS 8052 BASED MCU WITH ADDITIONAL  
PERIPHERALS  
Analog I/O  
8-channel, 420 kSPS high accuracy, 12-bit ADC  
On-chip, 15 ppm/°C voltage reference  
DMA controller, high speed ADC-to-RAM capture  
Two 12-bit voltage output DACs1  
Dual output PWM ∑-∆ DACs  
62 kBYTES FLASH/EE PROGRAM MEMORY  
4 kBYTES FLASH/EE DATA MEMORY  
2304 BYTES USER RAM  
PLL2  
OSC  
3 × 16 BIT TIMERS  
1× REAL TIME CLOCK  
POWER SUPPLY MON  
WATCHDOG TIMER  
INTERNAL  
BAND GAP  
VREF  
UART, I2C, AND SPI  
SERIAL I/O  
4 × PARALLEL  
PORTS  
On-chip temperature monitor function  
C
XTAL1 XTAL2  
REF  
8052 based core  
8051 compatible instruction set (20 MHz max)  
High performance single-cycle core  
Figure 1.  
32 kHz external crystal, on-chip programmable PLL  
12 interrupt sources, 2 priority levels  
Dual data pointers, extended 11-bit stack pointer  
GENERAL DESCRIPTION  
The ADuC841/ADuC842/ADuC843 are complete smart  
transducer front ends, that integrates a high performance self-  
calibrating multichannel ADC, a dual DAC, and an optimized  
single-cycle 20 MHz 8-bit MCU (8051 instruction set  
compatible) on a single chip.  
On-chip peripherals  
Time interval counter (TIC)  
UART, I2C®, and SPI® Serial I/O  
Watchdog timer (WDT)  
Power supply monitor (PSM)  
The ADuC841 and ADuC842 are identical with the exception of  
the clock oscillator circuit; the ADuC841 is clocked directly  
from an external crystal up to 20 MHz whereas the ADuC842  
uses a 32 kHz crystal with an on-chip PLL generating a  
programmable core clock up to 16.78 MHz.  
Power  
Normal: 4.5 mA @ 3 V (core CLK = 2.098 MHz)  
Power-down: 10 µA @ 3 V2  
Development tools  
Low cost, comprehensive development system  
incorporating nonintrusive single-pin emulation,  
IDE based assembly and C source debugging  
The ADuC843 is identical to the ADuC842 except that the  
ADuC843 has no analog DAC outputs.  
APPLICATIONS  
Optical networking—laser power control  
Base station systems  
Precision instrumentation, smart sensors  
Transient capture systems  
The microcontroller is an optimized 8052 core offering up to  
20 MIPS peak performance. Three different memory options  
are available offering up to 62 kBytes of nonvolatile Flash/EE  
program memory. Four kBytes of nonvolatile Flash/EE data  
memory, 256 bytes RAM, and 2 kBytes of extended RAM are  
also integrated on-chip.  
DAS and communications systems  
1 ADuC841/ADuC842 only.  
2 ADuC842/ADuC843 only, ADuC841 driven directly by external crystal.  
(continued on page 15)  
Rev. 0  
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 owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  

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