M25PE80 datasheet(22/61 Pages) STMICROELECTRONICS

Part #	M25PE80

Description	8 Mbit, low-voltage, Page-Erasable Serial Flash memory with Byte alterability, 50MHz SPI bus, standard pinout

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Instructions

M25PE80

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Figure 7.

Write Enable (WREN) instruction sequence

6.2

Write Disable (WRDI)

The Write Disable (WRDI) instruction (Figure 8) resets the Write Enable Latch (WEL) bit.

The Write Disable (WRDI) instruction is entered by driving Chip Select (S) Low, sending the

instruction code, and then driving Chip Select (S) High.

The Write Enable Latch (WEL) bit is reset under the following conditions:

●

Power-up

●

Write Disable (WRDI) instruction completion

●

Page Write (PW) instruction completion

●

Page Program (PP) instruction completion

●

Write to Lock Register (WRLR) instruction completion

●

Page Erase (PE) instruction completion

●

Sector Erase (SE) instruction completion

●

Bulk Erase (BE) instruction completion

Figure 8.

Write Disable (WRDI) instruction sequence

C

D

AI02281E

S

Q

2

1

34567

High Impedance

0

Instruction

C

D

AI03750D

S

Q

2

1

34567

High Impedance

0

Instruction

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