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Freescale MCU improves PC peripheral functionality

Posted: 07 Jun 2004 ?? ?Print Version ?Bookmark and Share

Keywords:mc9S12uf32? microcontroller? mcu? freescale semiconductor? motorola?

Freescale Semiconductor, a wholly owned subsidiary of Motorola Inc., has rolled out a 16-bit, flash-based microcontroller (MCU) that promises to help designers bring an improved level of peripheral functionality to the PC.

The MC9S12UF32 MCU features an integrated USB 2.0 physical layer transceiver to provide USB specification implementation for both full-speed (12Mbps) and high-speed (480Mbps) operation. The high-speed operation, running at bus speeds of up to 30MHz, implements fast large data transfers for applications such as real-time movies that were impractical at the previous lower-speed operation.

Besides standard USB functionality, the MC9S12UF32 enables control of external hard disk drives, CD-ROM and DVD-ROM drives via the USB 2.0 protocol. The device also enables compact flash memory devices: secure digital memory cards, multimedia cards, smart media memory cards and memory stick memory cards.

According to Freescale Semiconductor, the MCU is designed to reduce the device count in a PC system and improve performance by off-loading peripheral overhead functions from the CPU. The on-board flash enables the peripheral system to accommodate future software changes, and the availability of up to 75 programmable I/O lines helps to minimize the PC system costs and enhances flexibility.

Additional features of the MCU include an HCS12 core, 32KB of flash, 3.5KB of SMRAM, an integrated queue controller, and a serial communications interface.

Housed in a 100-pin LQFP, suggested resale pricing for the MC9S12UF32PU is $4.95 for 10,000-piece quantities. The company plans a 64-pin LQFP version in the third quarter.

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