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: 25P40,M25P40
Function: 4Mb, Serial Flash Memory
Package: SO 8, VFQFPN 8 Type
Manufacturer: ST Microelectronics
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Description
The M25P40 is a 4 Mbit (512K x 8) Serial Flash Memory, with advanced write protection mecha-nisms, accessed by a high speed SPI-compatible bus. The memory can be programmed 1 to 256 bytes at a time, using the Page Program instruction.
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.
Features
1. 4 Mbit of Flash Memory
2. Page Program (up to 256 Bytes) in 1.5ms (typical)
3. Sector Erase (512 Kbit) in 2 s (typical)
4. Bulk Erase (4 Mbit) in 5 s (typical)
5. 2.7 V to 3.6 V Single Supply Voltage
6. SPI Bus Compatible Serial Interface
7. 25 MHz Clock Rate (maximum)
8. Deep Power-down Mode 1 µA (typical)
9. Electronic Signature (12h)
10. More than 100,000 Erase/Program Cycles per Sector
11. More than 20 Year Data Retention
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