Configurable memory systems for MCUs

11 April 2001 Design Automation

STMicroelectronics offers free software to configure and program programmable system devices (PSDs). PSDExpress can be downloaded from website www.psdst.com. The package now supports all the PSD devices.

EasyFLASH

The EasyFLASH PSD is the first configurable memory system for MCUs to offer in-system programmability (ISP) of blank devices. This is accomplished via a 4-pin ISP port, based on the JTAG standard, which allows code to flow directly into the PSD memory banks bypassing the MCU. As a result, blank devices can be soldered onto the circuit board, and programmed at the end of the assembly line, thus eliminating the need to inventory pre-programmed devices.

The EasyFLASH PSD9XX family integrates up to 2 Mb of flash, 256 Kb of concurrent flash or EEPROM, up to 64 Kb of SRAM, additional I/O, power management, a security feature and advanced ISP options onto a single chip. They are 100% configurable with PSDsoft Express, and programmable via the ISP port, the MCU's serial port or a third party device programmer.

PSDsoft Express

PSDsoft Express allows for complete configuration of the PSD9XX family of PSDs. The point and click environment automatically configures the microcontroller interface based on the selected MCU, and then proceeds to step the designer through configuration, up to programming one's code and firmware into the PSD.

A PSD and Memory Product CD is available from Components & System Design, (011) 391 3062.

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