Fujitsu Semiconductor Europe has expanded its line-up for instrument clusters with the introduction of the MB9EF126 ‘Calypso’. It’s the first member of Fujitsu’ s FCR4 family of devices to be based on the ARM CortexTM-R4 core operating at up to 160MHz and offering more than 200 DMips processing power.
Calypso is designed as a cost-efficient single-chip solution for hybrid automotive instrument clusters. It contains intelligent support for up to 6 traditional gauges as well as the 2D graphics engine ‘IRIS’ to drive a colour display in the same cluster. With its 2MB of Flash, 64KB of EEFlash and 208KB of RAM – all three protected by ECC – and the 2MB of embedded graphics RAM, it fulfils next-generation cluster requirements.
Like the other devices of the FCR4 family, ‘Calypso’ contains the safety, security and power-saving feature expected by automotive customers. It is well equipped with communication interfaces supporting LIN, CAN, HS-SPI, I2S and Ethernet protocols.
This feature mix is completed by a rich set of timers, including an RTC, a sound generator, PWM and ADC channels. Autosar is supported via the MPU, a timing protection unit (TPU) and the peripheral protection unit (PPU).
Fujitsu’s 2D graphics engine IRIS ( as implemented on Calypso), consists of a display output with TCON, supporting 4 display layers and allowing pixel clocks up to 40MHz, a command sequencer to allow parallel running of the CPU and IRIS, a signature unit to support safety aspects and the 2D graphics core itself. It is optimised for low memory usage. A typical sequence of operations would be the parallel scaling, rotation and decompression of different bitmaps as the first step and then the blending of these bitmaps into one result as the second step – without the need to store the intermediate results.