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CAN protocol approved microcontroller

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MICROCHIP Technology's PIC18FXX8 family of high-performance, self-programmable Flash microcontrollers with an intelligent CAN 2.0B active interface, has achieved conformance with the ISO DIS 16845 standard, as tested by the Communication and Systems (C&S) Group in Germany.

The CAN protocol conformance test defined as ISO DIS 16845 ensures interoperability within a CAN network.

"Receiving ISO conformance reflects our commitment to the open standards that enable our customers to develop their end products quickly and easily," said Tom Bianchi, district sales manager for Australia and New Zealand at Microchip Technology.

"This announcement reinforces Microchip's continuous efforts to deliver products that meet or exceed the automotive industry's CAN requirements for connectivity applications."

The C&S Group was founded in 1995 and is fully incorporated by the faculty of Computer Science at the University of Applied Science in Wolfenbuttel, Germany.

The group specialises in testing and verifying communication protocols for use in automotive and industrial automation applications to ensure that manufacturers' products conform to the corresponding standards.

Among the smallest footprint CAN microcontrollers in the world, the PIC18F248, PIC18F258, PIC18F448 and PIC18F458 devices provide a high degree of flexibility that enable the devices to be programmed in socket via the CAN network. This enables remote nodes to be updated without the need to physically touch the devices.

In addition to the self-programmable Flash memory, the CAN devices also offer significantly more horsepower than the competition. Offering up to 10MIPS performance at 10MHz, the PIC18FXX8 family provides the power to make designs come to life in the automotive, industrial control, and medical equipment markets.

With an operating range of 2.0-5.5V, the devices feature up to 32kB self-programmable Flash memory, up to 1.5kB of user SRAM and 256 bytes of data EEPROM.

Providing a C compiler-friendly development environment, the devices possess a 10-bit analogue-to-digital converter (ADC) with up to eight input channels. The CAN interface has three transmit buffers, two receive buffers, six acceptance filters and two acceptance masks.

Differentiating features include low-voltage programmability, a peripheral set with both digital and analogue modules and selectable oscillator options (crystal/resonator/external clock, 4x phase lock loop [PLL] for high-frequency oscillators and a 32kHz secondary oscillator clock input).

The advantage of the self-programmable Flash memory enables the device to be updated in socket by executing its own internal instructions, thereby eliminating the need for external high-voltage or additional hardware.

The 40-lead PIC18F448 and PIC18F458 include the enhanced capture/compare/pulse width module (PWM) that is capable of outputting four 10-bit PWM signals with an auto shutdown feature. These devices provide an ideal embedded solution for driving half and full-bridge motor control applications requiring access to CAN networks.

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