1 Kb 1-Wire EPROM Add-Only Memory N21C21A Description The N21C21A is a 1K−bit serial EPROM containing a factory− programmed, unique 48−bit identification number, 8−bit CRC generation, and the 8−bit family code (09h).
A 64−bit status register controls write protection and page redirection.
The N21C21A 1−wire interface requires only a single connection and a ground return.
The DATA pin is also the sole power source for the N21C21A.
The small surface−mount package options saves printed−circuit− board space, while the low cost makes it ideal for applications such as battery pack configuration parameters, record maintenance, asset tracking, product−revision status, and access−code security.
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