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EDNE MAY 2014

pulse Battery sensor integrates MCU, CAN and analogue front-end Freescale has an AE C-Q100 (automotive) qualified intelligent battery sensor that combines three measurement channels, a 16/32-bit MCU, and a CAN protocol module in a single package. Designed to support both conventional and emerging battery chemistries for automotive and industrial applications, the MM9Z1J638 battery sensor measures key battery parameters for monitoring state of health (SOH), state of charge (SOC) and state of function (SOF) for early failure prediction. A flexible four-cell front end architecture supports conventional 12V lead acid batteries as well as emerging battery applications, such as 14V stacked cell Li-Ion, high voltage junction boxes, and 24V truck batteries. Integrating a 16/32 bit S12Z microcontroller with 128 k Flash, 8k RAM and 4k EE PROM together with a CAN protocol module, LIN interface and a three-channel analogue measurement front end, the MM9Z1J638 battery sensor combines analogue, processor and communication functions in a single package to help lower total bill of materials and accommodate advanced battery monitoring algorithms. The analogue front end includes a twochannel, 16-bit sigma delta (ΣΔ) analogue-to-digital converter (ADC) for simultaneous measurement of battery voltage and current, as well as a third 16-bit ΣΔ ADC for temperature monitoring using the integrated sensor and redundant measurement plausibility checks to support functional safety. The new Freescale product’s input battery voltage measurement capability supports a wide range up to 52V directly to the device as well as much higher voltage battery configurations when used with external voltage dividers. Reference designs with integrated hardware and software support for the MM9Z1J638 battery sensor enable development of new applications, including energy storage systems, uninterruptible power supplies, hospital equipment and alarm systems. Low-level drivers and BMS utility libraries are available to support custom battery modelling and shorten development cycles. The KIT9Z1J638EVM evaluation board is priced at $188.80 and demonstrates key features of the MM9Z1J638. Reference design RD9Z1-638-4Li is priced at $220.80 and demonstrates product capabilities for 4-cell Li-Ion battery applications. The MM9Z1J638 battery sensor costs $3.61(10,000). Complete article, here SERDES-centric 85k LUT FPGAs for companion-chip roles A device family from Lattice, the ECP5, is intended for smallcell, microserver, broadband access, industrial video and other high-volume applications where the lowest-possible cost, lowest-possible-power, and smallest-possible form-factor are crucial. The ECP5 Family ‘breaks the rules’ of conventional FPGA approaches to deliver a SERDES-based solution for designers to rapidly add features and functions to complement those delivered by ASICs and ASSPs. Lattice optimised the ECP5 family’s architecture with the goal of delivering the best value below 100k LUTs for performing critical functions as a companion chip to ASICs and ASSPs. Achieving 40% lower cost than competing solutions, optimisations include small LUT4 based logic slices with enhanced routing architecture, dual-channel SERDES to save silicon real estate, and enhanced DSP blocks for up to 4x resource improvements. “The ECP5 family breaks the rule that FPGAs should be the highest density, power hungry and expensive,” said Lattice Semiconductor President and CEO Darin Billerbeck. “Lattice’s newest family serves to provide customers with an ASIC/ASSP companion chip as the quickest path for removing development obstacles.” In wireless and wireline applications, the ECP5 family delivers an FPGA solution for enabling implementation of data path bridging and interfacing in a small, low-cost package. ECP5 FPGAs provide the flexible connectivity required in outdoor smallcells, at extremely low-cost. They can also enable a smart SFP (small form-factor pluggable) transceiver solution for broadband access equipment, including integrated operation and maintenance, in a 10m x 10mm package. Outside of communications, ECP5 devices offer low cost, low power PCI Express side-band connectivity for microservers. For industrial video cameras, ECP5 FPGAs can implement the entire image processing functionality in a device that consumes under 2W. The ECP5 family is, says Lattice, the only FPGA portfolio that enables 85k LUTs and SERDES in 10 x 10mm packages, amounting to 2X the functional density of competing solutions. Smart ball depopulation further simplifies package integration with existing PCB technology and reducing overall system Complete article, here cost. www.edn-europe.com EDN Europe | MAY 2014 9


EDNE MAY 2014
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