Product category: Microprocessors, Microcontrollers and DSPs
News Release from: Fujitsu Microelectronics Europe | Subject: MB91302A
Edited by the Electronicstalk Editorial Team on 9 March 2004
RISC microcontroller is
made for embedding
Fujitsu Microelectronics has develoiped a new 32bit RISC microcontroller implemented in 0.25um CMOS technology and operating at 3.3V
With its flexible configuration, supporting 16/32bit SDRAMs and numerous other memory interfaces, this new controller is ideal for applications requiring simultaneous implementation of fast data processing and control of peripheral resources. The MB91302A is the successor to the MB91101. It operates at up to 68MHz and features 4Kbyte data RAM and 4Kbyte of instruction cache for fast on-chip processing.
This article was originally published on Electronicstalk on 9 March 2004 at 8.00am (UK)
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Its FR60 core with a five-stage pipeline, 16bit fixed-length instruction set, built-in hardware multiplier and barrel shifter was designed specifically for embedded applications.
The versatile external interface allows direct access to SDRAM/FCRAM, SRAM, asynchronous ROM and various page- and burst-mode memories, and together with its high speed five-channel DMA controller, guarantees fast data transfer and simplifies circuit board design.
DMA transfer in flyby mode allows it to move data directly between an external device and a memory without passing through the CPU, thereby doubling the data transfer rate.
Further reading
Jitter suppression verified for mixed-signal ICs
Fujitsu Microelectronics Europe has been working with London-based Toric to verify embedded jitter-suppressing macros based on Anti-Jitter Cell technology
Ferroelectric memory chips at 2Mbit capacity
Fujitsu Microelectronics has doubled the capacity of its ferroelectric memory (FRAM) ICs to 2Mbit
The embedded boot ROM includes code for an easy startup of the controller from external memories.
Serial communication is supported by two I2C interfaces and three USARTs (each with its own baudrate generator).
Four independent ICU (input capture unit) channels to detect edges of external signals, three 16bit reload timers, four PPG timers and a four-channels 10bit A/D convertor complete this powerful data processing engine.
The MB91302A is available in a 144-pin QFP package.
This pin count allows the usage of up to 80 general-purpose I/O ports if the resource function connected to the related port is not required.
A flexible clock concept, which offers several internal clock frequencies as well as individual settings for the core, the peripherals and the external bus interface, combined with the standard power management function assists the user in finding the optimum tradeoff between performance and power consumption for his application.
For users needing to start software development before their target board is available, Fujitsu offers the low cost MB91302A starter-kit which: allows use of an unregulated external 9-12V DC power supply; includes a 5V internal power supply with power-LED; makes all MB91302A resources available for evaluation; has all MB91302A pins routed to connectors; includes the 16MHz main crystal; is equipped with two UART transceivers; has eight user LEDs; has a reset button and a reset LED; and offers five user buttons configurable for INT0, INT3, TIN1, NMI and ADTG/INT4.
The external bus interface of the MB91302A can also be used to directly connect Fujitsu graphics display controllers.
The MB91302A and starter kit are available now.
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