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Single-chip 16bit MCUs aimed at car instrument clusters

Posted: 04 Oct 2012 ?? ?Print Version ?Bookmark and Share

Keywords:MCU? vehicle meter? RL78/D1A? LCD controller?

Renesas Electronics Corp. has released 21 16bit MCUs in the RL78/D1A group that the company added are the industry's smallest single-chip MCUs for two-wheeled vehicle meter applications. The devices with packages ranging from 48 to 100 pins are geared for cost-sensitive meter control applications in two- and four-wheeled vehicles, stated the company.

With the new RL78/D1A MCUs, Renesas continues its strong history of providing 8- and 16bit support that meets the price, performance and size constraints required for use in low-end meter applications. The new devices address the growing market demand, offering integrated 16bit MCUs in a variety of pin-count packages to deliver more compactness and enhanced functions.

According to the company, the 48-pin package enables the use of electronic meters in compact two-wheeled vehicles. The MCUs provide roughly the same functionality at about half the size (7 x 7mm) of the earlier 78K0/Dx2 with 64-pin package (10 x 10mm). This enables switching from mechanical to electronic meters more practical.

The 100-pin package MCU with enhanced functions and increased memory enables the display of a wide range of vehicle information on electronic meters in low-price four-wheeled vehicles, indicated Renesas. The products provide enhanced functionality, with 256KB on-chip flash memory capacity and expanded LCD capability of 53 LCD segments x 4 backplane lines compared with previous-generation devices featuring 60KB flash memory capacity and LCD panel display capability of 40 columns x 4 lines. This allows vehicles to display a variety of vehicle information on the dashboard including odometer and other information.

In addition, the RL78/D1A group of MCUs adds on-chip data flash for storing odometer data so that external EEPROM can be eliminated, reducing the mounting area by about 10 per cent compared with a system using previous-generation Renesas devices. Combining integrated flash memory, 1 to 4 channels of stepping motor controller/driver, an LCD controller/driver and a sound generator, the MCUs make it possible to implement a meter display control system on a single chip, resulting in smaller form factors, reduced system costs and shortened system development cycles, expressed Renesas.

Samples of the RL78/D1A group of MCUs are scheduled to begin in October 2012, and price varies depending on the pin-count and memory storage configurations. For example, samples of the R5F10DGEJFB MCU with 48-pin package are planned to be priced at $5 per unit. Mass production of the RL78/D1A devices is scheduled to begin in January 2013 and is expected to reach a scale of 1,000,000 units per month for the total of 21 product versions in January 2014.

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