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MCUs cut power consumption by 25%

Posted: 13 Jul 2011 ?? ?Print Version ?Bookmark and Share

Keywords:automotive? microcontroller? electronic control unit?

Fujitsu Semiconductor Asia Pte Ltd has released 113 MCUs, as well as chips from the MB96600 series of 16bit MCUs and chips from the MB91520 series of 32bit MCUs. The new MCUs, together with Fujitsu Semiconductor's existing MB91570/MB91580/MB91590 series of 32bit MCUs, will enable comprehensive support for all kinds of automotive applications.

The recent awareness about global warming has prompted automobile system manufacturers to support the widespread use of environment-friendly, fuel-efficient cars. In order to accommodate these varying needs, next-generation automobile electronic control unit (ECU) systems are beginning to require a lineup of MCUs that can handle a wide variety of requirements.

MCU lineup is eco-friendly, enabling a significant reduction of over 25 percent in power consumption compared to existing products. At the same time, Fujitsu Semiconductor has expanded the lineup to deliver a wide-range of products that offer fine-tuned support for customer requirements, ranging from multifunction systems for developed countries to simpler systems for emerging markets. In addition, all of the products come standard with flash memory for data storage which reduces system costs, as well as a low-voltage detection circuit, a CR oscillation circuit, and a hardware watchdog circuit. The chips also come with a standard A/D converter for reducing software workloads and upgraded assistance features for LIN hardware, including automatic check-sum and self-diagnosis functionality. The 32bit MCUs, which require high performance and security, are equipped with an industry-class 12-channel (product with 100pin or more) multifunction serial interface. Given the increasing number of sensors and other peripheral devices that are being utilized due to the enhanced functionality of chips, this multifunction serial interface allows peripheral devices to be flexibly connected via I2C, SPI, UART or LIN. To protect the integrity of the MCUs' features, 32bit chips also come standard with a variety of diagnostic features, such as memory error detection and correction, bus error detection and port input/output protection.

The FR81S MB91570/MB91580/MB91590 series offers support for a complete range of automobile applications, including auto-body applications, dashboard applications, safety applications, infotainment applications, and power-train applications.

The MB96600 series of 16bit MCUs consists of 53 different products, ranging between 48每144pin packages and 32每384KB of flash memory. The MB91520 series of 32bit MCUs consists of 60 different products, ranging between 64每176 pin packages and 256KB每1MB of flash memory.

To help streamline software development, Fujitsu Semiconductor will offer microcontroller abstraction layer (MCAL) that is compliant with AUTOSAR specifications. The MB96600 series is compliant with the HIS recommended specifications and is compatible with AUTOSAR R3.0/3.1 that is scalable and optimized for the series' ROM size and performance. The MB91520 series is compatible with AUTOSAR R3.1/4.0. In addition, seamless development with both the 16bit and 32bit MCUs is possible using a JPwire-compatible emulator (MB2100-01-E).

Chips in the new product line are equipped with flash memory for programs and separate flash memory for data storage. This reduces the need for external E2PROM and helps streamline system development. Furthermore, the chips are equipped with a low-voltage detection circuit which cuts down on external reset ICs, as well as a CR oscillation circuit and a hardware watchdog circuit. Chips also come standard with an I/O relocation feature that can modify the I/O port configuration via software configuration.

Shipping of samples of the chips has already started.

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