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Flash PIC MCU with Full-Speed USB 2.0 connectivity

Posted: 06 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:microchip technology? flash pic microcontroller? flash pic mcu? mcu? usb?

Microchip Technology Inc. unveiled what it claims as the first flash PIC microcontrollers (MCU) with Full-Speed USB 2.0 connectivity and 48MHz operation, for 12Mbps data-transfer rates. In combination with a wide variety of on-chip peripherals and nanoWatt Technology power management, these features provide a complete embedded-control solution for designers working with USB in industrial, medical and many other embedded applications, said Microchip.

"Most USB MCUs focus on the PC peripherals marketneglecting the unique requirements of many embedded designers working on stand-alone embedded applications," said Ganesh Moorthy, VP of Microchip's Advanced Microcontroller and Memory Division. "This new Full-Speed USB PIC MCU family can perform as the sole controller in embedded applications thanks to the performance of its powerful 12MIPS RISC core, self-programmable flash memory and the power-saving features of our nanoWatt Technology."

One of the new MCUs' key features is its 24KB or 32KB of self-programmable Enhanced Flash memory, which allows field upgrades for end applications via the USB port. The company's PMOS Electrically Erasable Cell (PEEC) Flash technology provides high endurance of up to 100,000 erase/write cycles and long data retention of more than 40 years. In addition, its Full-Speed USB 2.0 interface includes an onboard transceiver and a Parallel Streaming Port for direct data transfers to external peripherals with minimum CPU overhead. Other key features of the devices include 2KB of RAM, 1KB of which can be a dedicated USB buffer; 256 bytes of EEPROM data memory; EUSART for RS232, RS485 and LIN serial interfaces; Master Synchronous Serial Port for I2C and SPI communication; a 10bit ADC with high accuracy (1LSB) and up to 12 input channels; two analog comparators; capture/compare/PWM module with 16bit capture and resolution; enhanced capture/compare/PWM module with dead-time control and fault-protection inputs; four timers (3 x 16bit, 1 x 8bit); programmable brownout reset and low voltage detect circuits; and enhanced in-circuit debugging capabilities with up to three hardware breakpoints.

Both the PIC18F2550 and PIC18F2455 are available in 28-pin SOIC and SDIP packages, while the PIC18F4550 and PIC18F4455 are housed in 40-pin DIP, 44-pin TQFP and QFN packaging options.

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