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AVR MCUs combine USB, battery charging and analog features

Beijing and San Jose, Calif.—Atmel Corp. has developed AVR microcontrollers that combine a USB controller and high-performance analog features.

According to Atmel, the ATmega16U4 and ATmega32U4 reduce system cost in battery-powered devices such as gaming accessories. The devices integrate a 10-bit A/D converter with 12 channels; a built-in temperature sensor allowing compensating thermal effects on analog performance; and a programmable gain x1, x10, x40 and x200 giving more flexibility to measure differential voltages for current monitoring. A high-speed timer with three PWM channels with complementary outputs and programmable dead-times allows 8-bit resolution PWM with a frequency of 500 kHz, up to 11-bit resolution PWM with a frequency over 60 kHz.

ATmega16U4 features 16 Kbytes of In-System Programmable (ISP) flash, 1 Kbytes of RAM and 512 bytes of EEPROM. ATmega32U4 features 32 Kbytes of In-System Programmable (ISP) flash, 2.5 Kbytes of RAM and 1 Kbytes of EEPROM.

Pricing: ATmega32U4 is offered in TQFP44 and QFN/MLF44 packages at $2.65 in quantities of 10k units and ATmega16U4 is offered in a QFN44 package at $2.40 in quantities of 10k units.
Availability: ATmega32U4 engineering samples are available now and both devices will be shipping in volume in the second quarter of 2008.
For more on AVR MCUs, Click here.

Atmel Corp., www.atmel.com

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