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Fujitsu MCU implements direct memory access

Posted: 10 Apr 2003 ?? ?Print Version ?Bookmark and Share

Keywords:fujitsu? mb91302? risc microcontroller? risc mcu? direct memory access?

The MB91302 32-bit RISC microcontroller (MCU) from Fujitsu Ltd implements direct memory access that significantly increases data transfer speeds and simplifies circuit board design due to a smaller parts count.

Manufactured using a 0.25?m CMOS process, the MCU offers on-chip interfaces for SDRAM, SRAM, asynchronous ROM, Flash memory, and FCRAM to enable direct memory access. The device is suitable for use in DVD players, digital cameras, video game consoles, and other applications that require high-speed throughput.

The MB91302 also provides a high-speed DMAC circuit dedicated for controlling data transfer, making it possible to move data directly between an external device and a memory, without passing through the CPU, thereby doubling the data transfer rate.

Offered in an 11-pin QFP, the device operates from a 3V to 3.6V supply and has a maximum clock rate of 68MHz. It has 4KB each of ROM, RAM, and cache memory. Other device features include UART controller, ADC, programmable pulse generator, and timer.

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