Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Analog Devices | Subject: ADuC7128
Edited by the Electronicstalk Editorial
Team on 04 April 2006
MCU takes precision analogue peripherals
onboard
A precision analogue MCU combines new levels of on-chip integration, performance and analogue peripherals for motor control and smart sensing applications in industrial and automotive designs.
Analog Devices has extended its portfolio of precision analogue microcontrollers with a device that combines new levels of on-chip integration, performance and analogue peripherals required for motor control and smart sensing applications that are widely used in industrial and automotive system designs The ADuC7128 features a powerful 32bit ARM7 RISC microcontroller core, a 12bit multi-channel, analogue-to-digital convertor (ADC) operating at speeds to 1Msample/s and 50% more embedded flash memory at 126Kbyte
This article was originally published on Electronicstalk on 2 Jul 2008 at 8.00am (UK)
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The new device builds on the success of Analog Devices' ADuC702x precision analogue microcontroller family by embedding application-specific analogue peripherals that reduce development time and cost associated with existing discrete solutions in motor control and smart sensing applications.
The peripherals include six-channel pulsewidth modulation (PWM) with H-bridge mode, an on-chip quadrature encoder that deliver the speed, position and direction control required by DC motor controls, and an integrated direct digital synthesiser (DDS) and lowpass filter that generates a raw sine wave at up to 1MHz to act as a stimulus for smart sensing applications.
"Two years ago, we addressed a strong customer demand for high-performance data convertors with embedded processing power", said Mike Britchfield, Product Line Director, Precision Signal Processing Group, Analog Devices.
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"We responded with an ARM7-based family of general-purpose precision analogue MCUs that met the performance, sise and processing requirements of applications ranging from medical instrumentation to optical transceivers".
"With today's introduction of the ADuC7128, we are not only increasing the breadth of our precision analogue microcontroller portfolio, but we have optimised the new device for more specific customer application requirements in the areas of motor control and sensing".
The ADuC7128 features a 44MIPS 32bit ARM7TDMI core, 12bit, 1Msample/s ADC and 126Kbyte of embedded Flash memory.
In addition to the six-channel PWM and quadrature encoder, the ADuC7128 provides I/V control, making it applicable to a variety of motor control applications.
The PWMs can also be used as general purpose 16bit PWMs to provide additional DAC outputs, high frequency clocks or set point control, for example.
For smart sensing applications, the ADuC7128 features a 32bit on-chip DDS that operates at 21MHz.
This feature enables smart sensor applications with a minimum frequency range of 4.8MHz, while an integrated low pass filter ensures a clean signal.
A 100ohm driver at the DDS output is controlled by the microprocessor core and analogue front end (AFE).
Additionally, the ADuC7128 integrates other analogue functionality, including a comparator, temperature sensor, PLA (Programmable Logic Array) and several communications ports including two UARTs, further reducing cost, board space and development time.
The ADuC7128 is sampling now with full production scheduled for late summer.
The device is priced at $6.95 per unit in 1000-unit quantities in a 9 x 9mm 64-LFCSP (lead-frame chip-scale package) and is specified over an operating temperature range of -40 to +85C.
An 80-pin LQFP (low profile quad flat pack) option, the ADuC7129, offers more GPIO and external memory interface; it is offered at $7.75 in 1000-piece quantities and will be sampling in September.
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