Renesas Flash R8C/Tiny Series MCU

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Renesas Flash R8C/Tiny Series MCU [Copy link]

Renesas Technology Corp. today announced the addition of 36 new models to the R8C/Tiny series of small, low -pin-count, high-performance 16-bit microcontrollers with on-chip flash memory. The new models are divided into four groups - 32-pin package versions R8C/26 and R8C/27, and 20-pin package versions R8C/28 and R8C/29. Samples will be available in Japan starting in December 2005.

All models in the R8C/Tiny series are high-performance, easy-to-use microcontrollers with on-chip flash memory. The addition of the four new groups will enable the R8C/Tiny series to meet the specific needs of a wider range of applications, such as battery-powered devices, as well as consumer electronics and industrial equipment, automotive equipment, etc.

These new series can provide the following features.

(1) Low-voltage operation for battery-powered devices
The lineup includes models that can reduce the operating voltage from the 2.7 V operating voltage of the previous R8C/Tiny Series products to as low as 2.2 V, and expand the operating voltage range from 2.2 V to 5.5 V. This device can be used in applications such as battery-powered devices that require low power consumption and low operating voltage.

(2) Wide-temperature range models for automotive applications
Despite being low-pin-count devices, the wide-temperature range (-40 to 125°C) models feature an interface compatible with LIN*1 automotive networks to meet the needs of automotive applications. In addition, the watchdog timer, EEPROM (Electrically Erasable Programmable Read-Only Memory), and sub-microcontroller that previously used three separate components can be implemented with a single R8C/Tiny Series chip, making these products ideal for sub-microcontrollers, supervisory microcontrollers, etc. for body control and high-performance systems.

(3) High-performance CPU core that can use existing software
The same R8C CPU high-performance 16-bit CPU core as the existing R8C/Tiny Series models. This facilitates the use of previously developed software for the R8C/Tiny Series, shortening product development time.


<Product Background>
There is growing demand for small-package, low-pin-count microcontrollers as main microcontrollers in small systems such as home appliances and industrial equipment, and as sub-microcontrollers in large-scale systems such as automotive equipment and advanced office automation equipment. The ease of use of such microcontrollers is expected to lead to new applications.






The R8C/Tiny Series of low-pin-count 16-bit microcontrollers developed by Renesas Technology is a series of microcontrollers in small packages, and 148 models of devices with on-chip flash memory are currently in mass production. Now, to meet the needs of a wider market, Renesas Technology has developed 36 new models in four groups - R8C/26, R8C/27, R8C/28 and R8C/29 - including versions with low-voltage operation and wide temperature range. This will bring the total number of R8C/Tiny Series models to 184, allowing users to select the most suitable model for special products in various application fields.


<Product Information>
All four groups of products feature an R8C CPU 16-bit CPU core and a maximum operating frequency of 20 MHz, and a range of low-voltage operation and wide temperature range models are available. The main differences between each group are as follows.

(1) R8C/26: 32-pin, no data flash memory*2
(2) R8C/27: 32-pin, including data flash memory
(3) R8C/28: 20-pin, no data flash memory
(4) R8C/29: 20-pin, including data flash memory

The low-voltage operation models feature features that can reduce the operating voltage from 2.7 V of previous products to a minimum of 2.2 V, and operate over an extended power supply voltage range of 2.2 V to 5.5 V. This will facilitate the use of high-performance, low-power R8C/Tiny Series 16-bit microcontrollers in battery-powered equipment, and make it possible to further reduce product power consumption.

This product also integrates a LIN interface for automotive applications. Most processing is performed in hardware using one 8-bit timer channel and one synchronous/UART serial interface channel. This simplifies the development of LIN-compatible products and reduces the software processing load on the CPU.

All models have on-chip flash memory, which provides single-power high-speed programming, high reliability and on-board programming capabilities.

The flash memory for storing programs is available in four densities of 32, 24, 16 and 8 KB for the R8C/26 and R8C/27 groups, and 16 and 8 KB for the R8C/28 and R8C/29 groups. Models in the R8C/27 and R8C/29 groups also include 2 KB of flash memory (composed of two 1 KB blocks) that can be used for program and data storage.