The M45PE20 is a 2Mbit, low voltage, page-erasable serial flash memory with byte-alterability and a 33MHz SPI bus interface.
The M45PE20 serial flash memory provides 2 Mbit (256 K × 8) of page‑erasable storage accessed via a 33 MHz SPI‑compatible bus. It supports byte‑alterability, up to 256‑byte page writes, and sector erases, making it suitable for a wide range of embedded applications.
Key features include a single‑supply voltage of 2.7 V to 3.6 V, deep power‑down mode with 1 µA consumption, more than 100 k write cycles, and a data retention period of over 20 years. The device is offered in RoHS‑compliant ECOPACK packages such as SO8, VDFPN8, and MLP8.
| SPI clock rate (max) | 33 MHz |
|---|---|
| Supply voltage | 2.7 V to 3.6 V |
| Page erase time (typical) | 10 ms |
| Sector erase size | 512 Kbit |
| Deep power‑down current | 1 µA (typical) |
| Write‑cycle endurance | >100 000 cycles |
| Data retention | >20 years |
The device supports a maximum SPI clock rate of 33 MHz.
The M45PE20 is rated for more than 100 000 write cycles.
In deep power‑down mode the device draws about 1 µA typical.
It operates from 2.7 V to 3.6 V with a single supply.