Advertisement
News
Advertisement

Renesas Technology to Release R8C/Mx MCU Series with Power Consumption among the Lowest in the Industry and First R8C to Support 1.8V Reprogramming

Sun, 02/21/2010 - 1:20pm
Renesas

SAN JOSE, Calif. – Feb 9, 2010—Renesas Technology America, Inc., today announced the release of the R8C/Mx Series of low-pin-count MCUs with on-chip flash memory (flash MCUs) offering power consumption among the lowest in the industry and a cost optimized peripheral set for applications requiring low power consumption, such as motion detectors, electric toothbrushes, smoke detectors and dedicated safety sensors for home appliances.

The R8C/Mx Series is a new addition to the R8C Family of flash MCUs, which has an established track record based on low pin count and high performance. The new series combines extremely low power consumption and a low pin count. The first products to appear will be the R8C/M11A, with a 14-pin package, and the R8C/M12A, with a 20-pin package. They will comprise a total of six types with 18 products. Sample shipments are scheduled to begin in Q2, 2010.

According to Ritesh Tyagi, Director of Marketing, System LSI Business Unit, Renesas Technology America, Inc., “Renesas Technology has invested heavily in the R8C Family to deliver superior technologies to a number of markets over the last five years.  One of the biggest strengths of the R8C product offering has been its exceptional scalability and now Renesas takes that to a new level with the R8C/Mx Series.  The R8C/Mx devices are not your typical low pin count MCUs.  This new lineup is designed with advanced process technology tuned for low power and low voltage re-programmability of flash memory, while still supporting a 1.8V to 5.5V operating range.  With the R8C/Mx series, engineers can get the best current consumption per MHz within the R8C Family and take advantage of the peripheral set optimized for low-cost designs.”

The features of the R8C/Mx Series are summarized below.

(1) Low power consumption that is among the best in the industry

Through improvements to the fabrication process and other enhancements, the current consumption during operation (active current) of the R8C/M11A and R8C/M12A is only 150 µA per 1 MHz, a reduction of approximately 60% from the 350 µA per 1 MHz of comparable earlier Renesas Technology products. This is ideal for battery powered compact electrical household appliances that require low power consumption.

In addition, the standby current is less than 1 µA, approximately half that of earlier Renesas Technology products, making R8C/Mx Series products suitable as sub-MCUs in larger systems with extensive standby time, such as consumer products and office equipment, where they can contribute to improved energy efficiency overall.

(2) Improved flexibility through enhanced peripheral functions for compact electrical household appliances

R8C/Mx Series MCUs are equipped with on-chip peripheral functions, including timers and comparators, required by compact household appliances such as electric toothbrushes, which require sensor detection and control functionality. This makes it possible for hardware to handle processing previously done by the CPU using software; for example, using a comparator for direct control of a timer based on sensor input. Bypassing the CPU in this way increases flexibility and improves real-time performance.

Additionally, the on-chip timers support three-phase pulse output, simplifying motor control. The on-chip peripheral I/O mapping controller enables reassignment of pin functions. This can help reduce development time by eliminating the need to make changes to the wiring board.

(3) Data flash that can be reprogrammed, erased, and read using low voltage of 1.8 V

Data flash*1 is a special type of on-chip flash memory exclusive to Renesas Technology that is intended for storing data. It eliminates the need for external EEPROM (Electrically Erasable and Programmable Read Only Memory) for data storage. The data flash of R8C/Mx Series MCUs supports a reprogramming/erasing voltage of only 1.8 V rather than the 2.7 V of earlier Renesas Technology products. This is suitable for applications requiring low-voltage operation, such as battery-powered products that must store data when the power supply is cut off.

(4) Variety of package options with low pin counts

The R8C/M11A is the first Renesas Technology MCU to feature a 14-pin package suitable for compact electrical household appliances requiring low-pin-count packages. It is available in either a compact TSSOP measuring 4.4 mm × 5 mm or an easy-to-mount DIP package. The 20-pin R8C/M12A is also available in either an LSSOP measuring 4.4 mm × 6.5 mm or a DIP package. Customers can choose the package that is the best match for the product under development, with options available that help reduce wiring board size and lower system cost.

Product Background

The R8C Family is a key product family in Renesas Technology’s well-established line of MCUs for the consumer field, which have the top market share*2 worldwide. With a variety of package options, memory configurations, and advanced on-chip peripheral functions, the R8C Family of MCUs have been widely adopted for system control in a broad range of products. In recent years, demand for reduced power consumption in compact electrical household appliances has risen along with concern for the environment. There is demand for lower current consumption both during system standby and during operation. In addition, the need to reduce system cost has spurred demand for low pin counts, compact packages, and on-chip peripheral functions to reduce the number of external devices.

Against this background, Renesas Technology has developed the new R8C/Mx Series specifically with compact electrical household appliances in mind. Improvements to the fabrication process designed to reduce current consumption during both standby and operation have cut power consumption by about half compared with earlier Renesas Technology MCUs. The R8C/Mx Series also combines low pin counts with on-chip control functions for sensors, etc.

 Product Details

The R8C/Mx Series is built around the R8C CPU core and delivers high-performance, powerful functionality, and excellent flexibility. The R8C is a 16-bit CPU, but the CPU and peripheral functions are linked by an 8-bit bus. Its maximum operating frequency is 20 MHz, and its wide operating voltage range extends from 1.8 V to 5.5 V. The data flash can be reprogrammed, erased, and read using a voltage of only 1.8 V.  On-chip peripheral functions include a high-speed on-chip oscillator, a power-on reset function,*3 and a low-voltage detection function*4 (two on-chip circuits supporting two and eight setting levels, respectively). This reduces the number of external devices required, such as EEPROM, oscillators, reset chips, and pull-up resistors, contributing to reduced system cost and smaller wiring board size.

The E8a emulator, an on-chip debugger that uses a single-pin interface, will be offered as a development environment for the MCU. Since only a single pin is needed for connection, all of the I/O pins can be used during debugging, enabling efficient program development. The E8a emulator functions not only as an emulator, but can also be used as a flash memory programmer.

The future evolution of the R8C Family will include products with even smaller packages, lower power consumption, and on-chip functions selected for specific fields. Renesas Technology will continue to extend its MCU lineup in response to evolving market needs, contributing to the development of products that are more compact, operate on lower voltage, and consume less power.

Notes

Notes:

  1. Data flash: Proprietary Renesas Technology flash memory used mainly for data storage separate from flash memory normally used for software storage.
  2. Source of sales figures: 2008 WW Microcontroller for Consumer Revenue market share
  3. Source: Gartner, "Semiconductor Applications Worldwide Annual Market Share: Database" Gerald Van Hoy et al. 2 April 2009
  4. Power-on reset function: A function that resets all of the MCUs internal circuits when the device is powered on. The power-on reset function of Renesas Technology MCUs is designed to respond flexibly even when the power supply voltage rise is gradual.
  5. Low-voltage detection function: A function that issues an internal reset signal or an interrupt when the voltage drops below a specified level.

* Product names, company names, or brands mentioned are the property of their respective owners.

Typical Applications

  • Compact electrical household appliances, consumer products, home appliances, mobile devices, industrial equipment, office equipment, etc.

About Renesas Technology Corp.

Renesas Technology Corp. is the world's No.1 supplier of microcontrollers and one of the world's leading semiconductor system solutions providers for mobile, automotive and PC/AV (Audio Visual) markets. It is also a leading provider of Power MOSFETs, Smart Card microcontrollers, RF-ICs, High Power Amplifiers, Mixed Signal ICs, System-on-Chip (SoC), System-in-Package (SiP) and more. Established in 2003 as a joint venture between Hitachi, Ltd. (TSE:6501, NYSE:HIT) and Mitsubishi Electric Corporation (TSE:6503), Renesas Technology achieved consolidated revenue of 702.7 billion JPY in FY2008 (end of March 2009). Renesas Technology is based in Tokyo, Japan and has a global network of manufacturing, design and sales operations in 16 countries with 25,000 employees worldwide. For further information, please visit http://www.renesas.com

Specifications

Item R8C/Mx Series Specifications
Group  name R8C/M11A Group R8C/M12A Group
Product No.: Operating temperature range

–20 to 85°C version

 (package)

R5F2M110

ANSP

(TSSOP)

R5F2M110

ANDD

(DIP)

R5F2M111

ANSP

(TSSOP)

R5F2M111

ANDD

(DIP)

R5F2M112

ANSP

(TSSOP)

R5F2M112

ANDD

(DIP)

R5F2M120

ANSP

(LSSOP)

R5F2M120

ANDD

(DIP)

R5F2M121

ANSP

(LSSOP)

R5F2M121

ANDD

(DIP)

R5F2M122

ANSP

(LSSOP)

R5F2M122

ANDD

(DIP)

Product No.: Operating temperature range

 –40 to 85°C version

(package)

R5F2M110

ADSP

(TSSOP)

R5F2M111

ADSP

(TSSOP)

R5F2M112

ADSP

(TSSOP)

R5F2M120

ADSP

(LSSOP)

R5F2M121

ADSP

(LSSOP)

R5F2M122

ADSP

(LSSOP)

CPU core R8C 16-bit CPU core
Max. operating frequency/power supply voltage 20 MHz/2.7 to 5.5 V

5 MHz/1.8 to 5.5 V

Operating temperature range -20 to 85°C (N version) or –40 to 85°C (D version)
Flash memory 2 KB 4 KB 8 KB 2 KB 4 KB 8 KB
Data flash 1 KB × 2 blocks
RAM 256 B 384 B 512 B 256 B 384 B 512 B
On-chip peripheral functions Timer
  • 16-bit timer: 3 channels

    Input capture/output compare function

    Event counter

Watchdog timer: 14-bit × 1 channel
Serial interface
  • UART (clock synchronous/asynchronous I/O): 1 channel
Programmable I/O ports
  • CMOS I/O ports: 11 (with selectable pull-up resistance)
  • Large-current-drive ports: 5
Programmable I/O ports
  • CMOS I/O ports: 17 (with selectable pull-Pup resistance)
  • Large-current-drive ports: 8
Power-on reset circuit
Low-voltage detection circuit: 2 channels (with selectable detection level)
Oscillator circuits
  • Main clock oscillator circuit (incorporating main clock oscillation-stop detection function)
  • High-speed on-chip oscillator
  • Low-speed on-chip oscillator
  • Low-power mechanism (standard mode [high-speed clock, high-speed on-chip oscillator, low-speed on-chip oscillator], wait mode, stop mode)
Interrupts
  • Interrupt vectors: 69
  • External interrupt inputs: 6 (INT × 3, key input × 3)
  • Interrupt priority levels: 2
Interrupts
  • Interrupt vectors: 69
  • External interrupt inputs: 8 (INT × 4, key input × 4)
  • Interrupt priority levels: 2
On-chip peripheral functions 10-bit A/D converter × 5 channels, sample-and-hold, sweep mode 10-bit A/D converter × 6 channels, sample-and-hold, sweep mode
Package
  • 14-pin TSSOP

    (4.4 mm × 5 mm, 0.65 mm pin pitch)

  • 14-pin DIP

    (6.3 mm × 19.2 mm, 2.54 mm pin pitch)

    * Operating temperature range

    –20 to 85°C version

    (N version) only

  • 20-pin LSSOP

    (4.4 mm × 6.5 mm, 0.65 mm pin pitch)

  • 20-pin DIP

    (6.3 mm × 24.5 mm, 2.54 mm pin pitch)

    * Operating temperature range

    –20to 85°C version

    (N version) only

-###-

SOURCE

Advertisement

Share this Story

X
You may login with either your assigned username or your e-mail address.
The password field is case sensitive.
Loading