Electronic Design

Converters Boast High-Speed Core, 62 kbytes Of Flash/EE Memory

The ADuC8xx devices, the newest additions to the MicroConverter family, integrate 12- or 16-bit analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) with an 8052 microcontroller core. With 62 kbytes of flash/EE program memory, the converters facilitate larger programs as well as C programming. Each device offers 8 kbytes of flash/EE data memory and 2304 bytes of data RAM. A comprehensive suite of peripherals includes precision ADCs, voltage-output DACs, a temperature sensor, and reference. Also included are a watchdog timer, time-interval counter, and serial I/O ports (I2C, SPI, and UART). The ADuC831/41 target applications that require larger memory and higher core speed. The ADuC831 has a 12-clock-per-instruction core and a 16-MHz maximum clock rate. The ADuC841 features a one-clock-per-instruction core and a maximum clock rate of 16 MHz at 3 V and 25 MHz at 5 V. The ADuC832/42 offer similar specifications to the ADuC831/41, except that they operate from a 32-kHz crystal. The ADuC836 includes dual 16-bit sigma-delta ADCs and a 12-bit DAC. All parts come in a 52-lead plastic quad flatpack and in the smaller (8- by 8-mm) chip-scale package. The ADuC831/2 and ADuC841/2 cost $7.22 and $7.95 each, respectively. The ADuC836 is priced at $8.11 each. All pricing is for 10,000-unit quantities.

Analog Devices Inc. www.analog.com; (800) ANALOG-D

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