25P05 PDF Datasheet – 512 Kbit Flash Memory (M25P05)

Serial flash memory is a type of non-volatile memory that is commonly used for storing data in embedded systems, microcontrollers, and other electronic devices. It is called “serial” because data is read from and written to the memory one bit at a time or in a serial fashion, as opposed to parallel flash memory where data is transferred in parallel over multiple data lines.

Part Number: 25P05, M25P05

Function: 512 Kbit Serial Flash Memory

Package: SO 8 Pin Type

Manufacturer: STMicroelectronics

Images:M25P05 pdf memory


The M25P05 is a 512 Kbit (64K x 8) Serial Flash Memory, with advanced write protection mechanisms, accessed by a high speed SPI-compatible bus. The memory can be programmed 1 to 128 bytes at a time, using the Page Program instruction. The memory is organized as 2 sectors, each containing 256 pages. Each page is 128 bytes wide. Thus, the whole memory can be viewed as consisting of 512 pages, or 65536 bytes. The whole memory can be erased using the Bulk Erase instruction, or a sector at a time, using the Sector Erase instruction.


1. 512 Kbit of Flash Memory

2. Page Program (up to 128 Bytes) in 3 ms (typical)

3. Sector Erase (256 Kbit) in 1 s (typical)

4. Bulk Erase (512 Kbit) in 2 s (typical)

5. 2.7 V to 3.6 V Single Supply Voltage

6. SPI Bus Compatible Serial Interface

7. 20 MHz Clock Rate (maximum)

8. Deep Power-down Mode 1 µA (typical)

9. Electronic Signature


M25P05 pinout datasheet

25P05 PDF Datasheet