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The M25P40 is a 4 Mbit (512K 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 256 bytes at a time, using the Page Program instruction.
The memory is organized as 8 sectors, each containing 256 pages. Each page is 256 bytes wide. Thus, the whole memory can be viewed as consisting of 2048 pages, or 524,288 bytes.
The whole memory can be erased using the Bulk Erase instruction, or a sector at a time, using the Sector Erase instruction.
M25P40 Maximum Ratings
SYMBOL
PARAMETERMin.
Min.
Max.
UNIT
TSTG
Storage Temperature
65
150
TLEAD
Lead Temperature during Soldering SO (20 seconds max.)1 VFQFPN
235
235
VIO
Input and Output Voltage (with respect to Ground)
0.6
4.0
V
VCC
Supply Voltage
0.6
4.0
V
VESD
Electrostatic Discharge Voltage (Human Body model) 2
` 4 Mbit of Flash Memory ` Page Program (up to 256 Bytes) in 1.5ms (typical) ` Sector Erase (512 Kbit) in 2 s (typical) ` Bulk Erase (4 Mbit) in 5 s (typical) ` 2.7 V to 3.6 V Single Supply Voltage ` SPI Bus Compatible Serial Interface `25 MHz Clock Rate (maximum) ` Deep Power-down Mode 1 A (typical) ` Electronic Signature (12h) ` More than 100,000 Erase/Program Cycles per Sector ` More than 20 Year Data Retention