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Renesas MCU line touts LIN interface, on-chip oscillators

Posted: 20 Dec 2005 ?? ?Print Version ?Bookmark and Share

Keywords:Renesas Technology? microcontroller? mcu?

Renesas Technology America Inc. has beefed-up its R8C/Tiny 16-bit microcontrollers (MCUs) with 36 new models, including some that offer low-voltage (2.2V to 5.5V) and wide-temperature-range (-40C to 125C) operation. There is also the LIN (local interconnect network) interface, enabling the devices to find wide usage in automotive and industrial applications.

The new devices offer a high-precision on-chip clock oscillator and a low voltage detection circuit. They also have a high-resolution 16-bit timer that can be clocked at high speeds up to 40MHz by a separate on-chip oscillator, and a LIN interface. To simplify the development of LIN-compatible products and reduce the CPU's software processing load, most of the protocol processing is performed by hardware using an 8-bit timer channel and a synchronous/UART serial interface channel. Additional on-chip oscillators run at 20MHz and at 100KHz.

Devices in the R8C/26 and R8C/27 groups come in 7-by-7mm 32-pin LQFP packages, while those in the R8C/28 and R8C/29 groups are offered in 6.5-by-4.4mm 20-pin LSSOP packages. For the R8C/26 and R8C/27 product groups, the on-chip flash memory for program storage is 32-, 24-, 16- or 8KB, while for the R8C/28 and R8C/29 groups, it is 16KB or 8KB. Moreover, the MCUs in the R8C/27 and R8C/29 groups include an extra 2Kbytes of data flash memory with higher endurance (organized as two 1Kbyte blocks) that can be used for both program and data storage.

Ritesh Tyagi, senior marketing manager, system LSI business unit, Renesas Technology America, said, "All models in our R8C/Tiny series are high-performance, easy-to-use MCUs with on-chip flash memory. The addition of these 36 new models to the product line makes available solutions for an even wider variety of applications. Whether our customers are developing a battery-operated application which requires low-voltage operation or a high-end automotive application that requires higher temperature specifications, they can now find a small, high-performance and cost-effective R8C/Tiny device that fits their requirements for main processors or sub-processors."

Pricing in sample quantities range from $1.50 to $3.50. Specific prices are dependent on packaging and on-chip memory and peripherals.

Renesas development tools for the new R8C/26, R8C/27, R8C/28 and R8C/29 series include the E8 emulator/on-chip debugger with single-pin connection capability. It allows all I/O pins to be used during debugging, for more efficient program development, and can also be used as a flash memory writer. The High-performance Embedded Workshop, an integrated development environment with a full software toolset is available, too, as are tools and services from the many independent vendors that support the R8C series.

With the introduction of the newly added R8C/Tiny devices, Renesas is starting a factory flash programming service with one-time nominal charges. After paying the $1,000 nonrecurring engineering fee, customers do not need to pay additional per device fees. The minimum order quantity for the free factory programming service is 50,000 pieces per year and the minimum lot for each order is 2,000 pieces.

- Marty Gold

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