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OP296 数据表(PDF) 1 Page - Analog Devices |
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OP296 数据表(HTML) 1 Page - Analog Devices |
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1 / 88 page  MicroConverter® 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU ADuC841/ADuC842/ADuC843 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 www.analog.com Fax: 781.326.8703 © 2003 Analog Devices, Inc. All rights reserved. FEATURES Pin compatable ugrade of ADuC812/ADuC831/ADuC832 Increased performance Single-cycle 20 MIPS 8052 core High speed 420 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-circuit reprogrammable Flash/EE, 100 year retention, 100 kCycle endurance 2304 bytes on-chip data RAM Smaller package 8 mm × 8 mm chip scale package 52-lead PQFP—pin compatable upgrade 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 On-chip temperature monitor function 8052 based core 8051 compatible instruction set (20 MHz max) High performance single-cycle core 32 kHz external crystal, on-chip programmable PLL 12 interrupt sources, 2 priority levels Dual data pointers, 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 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 APPLICATIONS Optical networking—laser power control Base station systems Precision instrumentation, smart sensors Transient capture systems DAS and communications systems 1 ADuC841/ADuC842 only. 2 ADuC842/ADuC843 only, ADuC841 driven directly by external crystal. FUNCTIONAL BLOCK DIAGRAM 62 kBYTES FLASH/EE PROGRAM MEMORY 4 kBYTES FLASH/EE DATA MEMORY 2304 BYTES USER RAM 3 × 16 BIT TIMERS 1 × REAL TIME CLOCK 4 × PARALLEL PORTS 20 MIPS 8052 BASED MCU WITH ADDITIONAL PERIPHERALS ADuC841/ADuC842/ADuC843 XTAL2 XTAL1 TEMP SENSOR CREF INTERNAL BAND GAP VREF ADC0 ADC1 ADC5 ADC6 ADC7 OSC 12-BIT DAC DAC1 PWM0 T/H MUX 12-BIT ADC HARDWARE CALIBRATON BUF DAC1 BUF PWM1 12-BIT DAC 16-BIT Σ-∆ DAC 16-BIT PWM 16-BIT PWM POWER SUPPLY MON WATCHDOG TIMER UART, I2 C, AND SPI SERIAL I/O MUX 16-BIT Σ-∆ DAC PLL2 Figure 1. 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. 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. The ADuC843 is identical to the ADuC842 except that the ADuC843 has no analog DAC outputs. 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. (continued on page 15) |
类似零件编号 - OP296 |
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类似说明 - OP296 |
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