ADUC841BCP62-5 QFP52 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU

ADUC841BCP62-5 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU

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.

APPLICATIONS

Optical networking—laser power control

Base station systems

Precision instrumentation, smart sensors

Transient capture systems

DAS and communications systems