The SH7206 is the first device of a new CPU-core concept from Renesas offering a compatible line-up to current SH2 user. The new devices are up to 25-times faster than a 50 MHz SH2 offer much faster interrupt response time and much better code density.

The SH7206 provides excellent real-time performance by storing programs that must run at high-speed in the on-chip RAM and executing them at 200MHz. Programs that are larger than 128 KB and perform multi-tasking must be stored in external memory but can be executed quickly using the 16 KB cache memory. The device is therefore well suited for high-end industrial applications where real-time performance is critical, such as AC servos and inverters, as well as office and consumer applications requiring high-speed data processing.

The SH-2A CPU core has 15 internal dedicated register banks for interrupts. Only 6 cycles response cycles are required compared to 37 in SH2. As a result, the interrupt response time of the SH-2A operating at 200 MHz is 25-times faster that of the SH-2 operating at 50MHz. This enables extremely rapid program switching when an interrupt event occurs.

The instruction set of the SH2-A is upward compatible to the SH-2 CPU cores. Programs written for the SH-2 can be used unmodified and will be reduce by approximately 25%.

The SH7206 incorporates two multifunction timer units (MTU2) that output 6-phase PWM waveforms and can be used to control two AC motors simultaneously. It is equipped with two four-channel 10-bit A/D converters, a two-channel 8-bit D/A converter and an eight-channel DMAC, which are all useful for many types of industrial equipment. The chip also includes a four-channel serial communication interface with 16-stage FIFO and a single-channel I²C-bus interface, which can be used to implement a wide variety of communication functions. The device can be connect directly to external RAM, SRAM, burst ROM and multiplex I/O, without the need for additional external devices. The external data bus can be expanded to 32 bits. It supports a maximum of 81 I/O channels, allowing connections with a variety of peripheral devices and effective control of integrated equipment. The inclusion of multiple peripheral functions reduces the number of external devices needed, making it possible to implement applications that are both compact and low-cost.

The SH7206 is available in a LQFP-176. On-chip debugging functions supports real-time debugging at the maximum operating frequency. The E10A-USB emulator, which is USB-powered and requires no external power supply, is available. MSC also offers an evaluation-board for this new device.

For additional information please send a mail to: microcontroller@msc-ge.com