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ARM-based MCUs take high-end graphics to mid-range cars Cypress Semiconductor has grown its Traveo microcontroller family with a series that provides automotive manufacturers with a cost-effective platform to deliver 2-D and 3-D graphics and advanced functionality for dashboards, head-up displays and HVAC systems in compact vehicles. The S6J32BA and S6J32DA series build upon Spansion’s announcement of the Traveo 2-D graphics MCU S6J324C series and the 3-D graphics MCU S6J326C series for midsize cars in October 2014. The Traveo family delivers state-ofthe art 2-D and 3-D graphics, which have been optimised to bring sophisticated and automotive specific graphics functions into the car without increased power and bill of materials requirements. As the first 3-D-capable ARM Cortex-R5 cluster MCU, Cypress says its graphics engine provides greater memory savings, increased safety features and rich image capabilities, without the need for external video RAM. These, in turn, help manufacturers take advantage of lower overall system costs. The Cypress Traveo S6J32BA and S6J32DA product family includes the ARM Cortex-R5 processor, 1 MB of internal flash, 1 MB of internal video RAM, enhanced secure hardware extension (eSHE) and the HyperBus interface that enables seamless connections with HyperBus memories such as HyperFlash memory and Hyper- RAM memory. The S6J32BA and S6J32DA series are pin compatible with their predecessors S6J324C and S6J326C, providing customers the flexibility and ease to upgrade without requiring changes to the board layout. The graphics functionality is complemented by an advanced sound system with a 16-bit audio-DAC and a multi-channel mixer. Cypress www.cypress.com 100V micropower voltage monitors provide 1.4% accuracy for HV designs LTC2965 and LTC2966 are 3.5V to 100V, single and dual channel voltage monitors that draw 6 μA of quiescent current. Alternative voltage monitoring solutions typically call for a low power comparator, a high input voltage LDO to power the comparator and a high value resistive divider to level translate the monitored rail, all of which increase board space and power consumption, and decrease monitoring accuracy. The LTC2965/LTC2966 avoid the major pitfalls of a discrete solution by integrating all components required to directly interface with high voltage rails in a 3 x 3 mm package. Each device includes resistor-programmable threshold inputs to facilitate simple undervoltage, overvoltage or window monitoring of positive or negative rails to within ±1.4% accuracy over temperature. In addition to the high voltage inputs, the LTC2965/LTC2966 include adjustablepolarity UV/OV comparator outputs that can be pulled up to voltages as high as 100V. All high voltage pins are rated to 140V, withstanding high voltage transients without damage. Integrated high value resistive dividers with selectable ratios offer improved accuracy, power savings and flexibility compared to solutions using external high value resistors. Threshold programming is achieved using low value discrete resistors in combination with configuration pins for scaling the comparator thresholds and setting output polarity. A built-in buffered reference provides convenient low voltage biasing. Linear Technology www.linear.com CAN FD transceiver family offers migration path Microchip’s new CAN FD transceivers withstand the harsh conditions under the hood and meets lower power budgets. As an interface between a CAN protocol controller and the physical two-wire CAN bus, the MCP2561&2FD transceivers can serve both the traditional CAN and the new CAN FD protocols, providing a migration path for automotive electronics designers. With their robustness and industryleading features, including data rates of up to 8 Mb/s, the MCP2561/2FD transceivers enable customers to implement and realise the benefits of CAN FD. The transceivers have one of the industrys lowest standby current consumption (<5 A typical), helping to meet ECU low-power budget requirements. In addition, these devices support operation in the -40 to 150 degrees Celsius temperature range, enabling usage in harsh environments. The MCP2561/2FD product family is available in 8-pin PDIP, SOIC and 3x3 mm DFN (leadless) packages, providing additional design flexibility for space-limited applications. The family also provides two options: The MCP2561FD comes in an 8-pin package and features a SPLIT pin. This SPLIT pin helps to stabilise the common mode in biased split-termination schemes. Microchip www.microchip.com Compact liquid flow meter for industrial applications Sensirion (Switzerland) is expanding its range of liquid flow sensors for measuring low flow rates; the SLS-1500 liquid flow meter delivers fast and precise measurements for flow rates of 0 to 40 ml/min. The compact liquid flow meter comes in a robust housing and offers a versatile sensor solution for applications in demanding industrial environments and laboratory settings. Sensirion’s modular approach of combining the sensor and interface cable ensures an optimum match with rapid results and simplifies integration of a flow sensor. With a typical response time of 20 msec, the SLS-1500 is able to reliably monitor highly dynamic dispensing processes. The flow channel inside the sensor is completely straight and open and has no moving parts. Inert wetted materials provide chemical resistance and biocompatibility. The SLS-1500 is compatible with SCC1 interface cables, thereby offering USB, RS485 and analogue voltage output connections. Sensirion www.sensirion.com 44 Electronic Engineering Times Europe April 2015 www.electronics-eetimes.com


EETE APR 2015
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