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M25P40_07 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. M25P40_07
Description  4 Mbit, low voltage, serial Flash memory with 50 MHz SPI bus interface
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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 5 page
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M25P40
List of figures
5/53
List of figures
Figure 1.
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2.
SO and VFQFPN connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3.
Bus Master and memory devices on the SPI bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4.
SPI modes supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 5.
Hold condition activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 6.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 7.
Write Enable (WREN) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 8.
Write Disable (WRDI) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 9.
Read Identification (RDID) instruction sequence and data-out sequence . . . . . . . . . . . . . 21
Figure 10.
Read Status Register (RDSR) instruction sequence and data-out sequence . . . . . . . . . . 23
Figure 11.
Write Status Register (WRSR) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 12.
Read Data Bytes (READ) instruction sequence and data-out sequence . . . . . . . . . . . . . . 26
Figure 13.
Read Data Bytes at Higher Speed (FAST_READ) instruction sequence
and data-out sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 14.
Page Program (PP) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 15.
Sector Erase (SE) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 16.
Bulk Erase (BE) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 17.
Deep Power-down (DP) instruction sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 18.
Release from Deep Power-down and Read Electronic Signature (RES) instruction
sequence and data-out sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 19.
Release from Deep Power-down (RES) instruction sequence . . . . . . . . . . . . . . . . . . . . . . 34
Figure 20.
Power-up timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 21.
AC measurement I/O waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 22.
Serial input timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 23.
Write Protect setup and hold timing during WRSR when SRWD = 1 . . . . . . . . . . . . . . . . . 45
Figure 24.
Hold timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 25.
Output timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 26.
SO8 narrow – 8 lead plastic Small Outline, 150 mils body width, package outline. . . . . . . 47
Figure 27.
VFQFPN8 (MLP8) 8-lead Very thin Fine pitch Quad Flat Package No lead,
6 × 5 mm, package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48




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