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Introduction

The PSD5XX family is a microcontroller peripheral that integrates high-performance and user-configurable blocks of EPROM, programmable logic, and SRAM into one part. The PSD5XX is also loaded with a variety of features, such as Counter/Timers, Interrupt controller, power management, and page logic. The PSD5XX products also provide a powerful microcontroller interface that eliminates the need for external “glue logic”. The no “glue logic” concept provides a user-programmable interface to a variety of 8- and 16-bit (multiplexed or non-multiplexed) microcontrollers that is easy to use. The part’s integration, small form factor, low power consumption, and ease of use make it the ideal part for interfacing to virtually any microcontroller.

FEATURES SUMMARY

■Single Supply Voltage:

– 5 V±10 for PSD5XX

– 2.7 to 5.5 V for PSD5XX-V

■Up to 1 Mbit of UV EPROM

■Up to 16 Kbit SRAM

■Input Latches

■Programmable I/O ports

■Page Logic

■Programmable Security