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32-bit CISC microcontroller for advanced automotive control systems reduces syst

  London - Renesas Technology Europe today announced the H8SX/1544F 32-bit CISC microcontroller for advanced automotive control systems. The single-chip package H8SX/1544F enables lower system cost to be achieved by reducing the number of external parts required and offers 512-Kbyte flash memory that is accessible in one cycle, increasing program processing speed, and can be rewritten on-chip, reducing debugging and system development time. The product also includes a controller compatible with the CAN (Controller Area Network) in-vehicle LAN standard.

The H8SX/1544F is the latest addition to the H8SX family of microcontrollers incorporating an H8SX 32-bit CISC CPU core that uses a proprietary Renesas Technology architecture. The high-performance CISC CPU core provides 40 MIPS processing performance at a maximum operating frequency of 40 MHz, which is sufficient for multiple high-performance control systems such as meter panel, airbag and chassis control. The CPU core instruction set is upward-compatible with that of Renesas Technology’s current H8S Family 16-bit microcontrollers, enabling programs of systems developed for the H8S family to be used while improving ROM code efficiency by approximately 20%. This not only allows H8S core product software resources to be used, but also enables programs to be made more compact thanks to the improved ROM code efficiency.


The H8SX/1544F also offers a number of on-chip peripheral functions, including an enhanced two-channel controller with filtering function, compatible with the CAN in-vehicle LAN standard, a SCI (Serial Communication Interface), SSU (Synchronous Serial Communication Unit) and 16-bit general-purpose timer. An external bus extension function allows high speed access to external devices, a DMAC (Direct Memory Access Controller) enables high-speed data transfer and an integrated stepping motor timer and driver capable of driving up to six meters, such as a tachometer or speedometer, simultaneously, are also featured.

The H8SX/1544F model is being released together with the H8SX/1543F, differing only in on-chip memory capacity as it features 384 Kbytes of flash memory and 16 Kbytes of RAM. This allows the user to choose the most suitable model for a particular system. The operating ambient temperature range is -40ºC to +105ºC, and the package used is a 144-pin LQFP. This provides a line up of 100-pin and 144-pin H8SX family products for in-vehicle control system use.  Sample shipments of the H8SX/1544F will begin on 29 July 2005.

Item Specifications
Product name (type name) H8SX/1544F (R5F61544) H8SX/1543F (R5F61543)
CPU core 32-bit H8SX CPU core (General registers: 16 bits x 16)
Maximum operating frequency/ power supply voltage 40 MHz / 4.5 V to 5.5 V
Operating ambient temperature -40 ºC to +105 ºC
On-chip flash memory 512 Kbytes 384 Kbytes
On-chip RAM 24 Kbytes 16 Kbytes
External extension functions
  • 16-bit data bus width external extension function
On-chip peripheral functions
  • DMA controller (DMAC) x 4 channels
  • 16-bit general-purpose timer (TPU) x 6 channels (16 inputs/outputs)
  • 16-bit PWM timer x 12 channels (12 outputs)
  • 10-bit PWM timer (for stepping motor use) x 2 channels (16 outputs)
  • 8-bit watchdog timer x 1 channel
  • 16-bit watch timer (for real-time clock use) x 1 channel
  • Serial communication interface (SCI) x 3 channels (8-bit asynchronous, synchronous)
  • Synchronous serial communication unit (SSU) x 2 channels
  • CAN (RCAN-ET) x 2 channels (Bosch CAN Ver. 2.0B active compliant Full CAN support / 16 message buffers)
  • I²C bus * interface x 2 channels
  • A/D converter (10-bit resolution) x 16 channels (Unit 0: 8 channels, Unit 1: 8 channels)
  • D/A converter (8-bit resolution) x 2 channels
  • Sound generator x 4 channels
Power-down modes
  • Sleep mode
  • All modules clock stop mode
  • Subclock mode
  • Hardware standby mode
  • Software standby mode
Package 144-pin LQFP (20 mm x 20 mm, 0.5 mm pin pitch)
* I2C bus (Inter IC Bus) is an interface specification proposed by Royal Philips Electronics of the Netherlands.


Lunes, 11 Julio, 2005 - 07:00
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