The X28HC64 EEPROM, fabricated with Intersil’s floating‑gate CMOS technology, offers 8 K × 8 bits of non‑volatile memory in a 5 V‑only device. It features a JEDEC‑approved byte‑wide pinout, 64‑byte page write capability, and both DATA and Toggle‑Bit polling for early end‑of‑write detection.
The datasheet provides detailed ordering information, pin configurations, timing diagrams for read, write, and page‑write operations, as well as hardware and software data‑protection features that safeguard against inadvertent writes.
| Access time | 70 ns |
|---|---|
| Active current (max) | 40 mA |
| Standby current (max) | 200 µA |
| Endurance | 1 million write cycles |
| Data retention | 100 years |
| Page write size | 64 bytes |
| Byte or page write cycle (typical) | 2 ms |
| Complete memory rewrite (typical) | 0.25 s |
The access time is 70 ns.
It is rated for 1 million write cycles.
The standby current is up to 200 µA.
Data can be retained for 100 years.