Fujitsu Microelectronics Introduces Next Generation General Purpose 32-bit RISC Microcontroller

  

(Fujitsu) March 8, 2004 -- Fujitsu Microelectronics announces a new 32-bit RISC microcontroller implemented in 0.25µm CMOS technology and operating at 3.3V. With its flexible configuration, supporting 16-bit/32-bit 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 4KB data RAM and 4KB of Instruction Cache for fast on-chip processing. Its FR60 core with a 5-stage pipeline, 16-bit fixed-length instruction set, built-in hardware multiplier and barrel shifter was designed specifically for embedded applications.

The flexible external interface allows direct access to SDRAM/FCRAM, SRAM, asynchronous ROM and various page and burst mode memories, and together with its high speed 5-channel Direct Memory Access Controller (DMAC), guarantees fast data transfer and simplifies circuit board design. DMA transfer in fly-by 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.

The embedded BootROM includes code for an booting the controller from external memory.

Serial communication is supported by two I2C interfaces and three USARTs (each with their own baud rate generator). Four independent ICU (Input Capture Unit) channels to detect edges of external signals, three 16-bit reload timers, four PPG timers and 4 channels of a 10-bit A/D converter complete this powerful data processing engine.

A programmable clock 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 trade-off 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. Features of the starter kit include:

• all MB91302A resources available for evaluation
• all MB91302A pins routed to connectors
• equipped with two UART transceivers
• 8 user LEDs
• optional: alphanumeric standard LCD connectable instead of LEDs
• offers 5 user-buttons configurable for INT0, INT3, TIN1, NMI and ADTG/INT4
• includes socketed 4MBx16 Flash and 512Kx32x4 SDRAM

The external bus interface of the MB91302A can also be used to directly connect to Fujitsu Graphic Display Controllers.

The MB91302A is available in a 144-pin QFP package. The MB91302A and starter-kit are available now.

About Fujitsu Microelectronics
Fujitsu Microelectronics is a major supplier of semiconductor and display products. The company provides advanced systems solutions to the automotive, digital TV, mobile telephony, networking and industrial markets. Engineers from design centres dedicated to microcontrollers, mixed-signal, wireless, FRAM, multi-media ICs and ASIC products work closely with FME’s marketing and sales teams throughout Europe to help satisfy customers’ system development requirements.