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M25PE40 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. M25PE40
Description  4 Mbit, low voltage, Page-Erasable Serial Flash memory with byte alterability, 50 MHz SPI bus, standard pinout
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M25PE40 Datasheet(HTML) 5 Page - STMicroelectronics

 
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M25PE40
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List of figures
Figure 1.
Logic diagram - previous T7X process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 2.
Logic diagram - new T9HX process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3.
VFQFPN and SO connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4.
Bus master and memory devices on the SPI bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 5.
SPI modes supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 7.
Write Enable (WREN) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 8.
Write Disable (WRDI) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 9.
Read Identification (RDID) instruction sequence and Data-out sequence . . . . . . . . . . . . . 23
Figure 10.
Read Status Register (RDSR) instruction sequence and Data-out sequence . . . . . . . . . . 25
Figure 11.
Write Status Register (WRSR) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 12.
Read Data Bytes (READ) instruction sequence and Data-out sequence . . . . . . . . . . . . . . 28
Figure 13.
Read Data Bytes at Higher Speed (FAST_READ) instruction sequence
and Data-out sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 14.
Read Lock Register (RDLR) instruction sequence and data-out Sequence. . . . . . . . . . . . 30
Figure 15.
Page Write (PW) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 16.
Page Program (PP) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 17.
Write to Lock Register (WRLR) instruction sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 18.
Page Erase (PE) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 19.
SubSector Erase (SSE) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 20.
Sector Erase (SE) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 21.
Bulk Erase (BE) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 22.
Deep Power-down (DP) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 23.
Release from Deep Power-down (RDP) instruction sequence . . . . . . . . . . . . . . . . . . . . . . 41
Figure 24.
Power-up timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 25.
AC measurement I/O waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 26.
Serial input timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 27.
Top Sector Lock (T7X process) or Write Protect (T9HX process) setup and hold
timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 28.
Output timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 29.
Reset AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 30.
VFQFPN8 (MLP8) 8-lead Very thin Fine Pitch Quad Flat Package No lead
6 × 5 mm, package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 31.
SO8N – 8 lead Plastic Small Outline, 150 mils body width, package outline . . . . . . . . . . . 55
Figure 32.
SO8W – 8 lead Plastic Small Outline, 208 mils body width, package outline. . . . . . . . . . . 56


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