Low-Cost Integration of Serial EEPROMs and Flash Memory Devices

In many applications, non-volatile memory needs are addressed by general-purpose serial-interface Electrically Erasable Programmable Read-Only Memories (EEPROMs) or flash memory devices, especially since they offer low pin-count, small packages, low voltage operation, and low power consumption. Nevertheless, designers still face the challenge of reducing board space and total system cost. Many of the uses for these memory devices are related to system configuration, manufacturing, and security. The functionality provided by serial EEPROMs and some flash devices in these applications can be integrated into a MAX II CPLD, which offers an 8-Kbit flash storage block called the User Flash Memory (UFM).