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A25L010M-F

(A25L010 - A25L512) Serial Flash Memory

AMIC Technology 

Write Enable (WREN)

The Write Enable (WREN) instruction (Figure 4.) sets the

Write Enable Latch (WEL) bit.

The Write Enable Latch (WEL) bit must be set prior to every

Page Program (PP), Sector Erase (SE), Block Erase (BE),

Chip Erase (CE) and Write Status Register (WRSR)

A25L016 Series

instruction.

The Write Enable (WREN) instruction is entered by driving

Chip Select ( S ) Low, sending the instruction code, and then

driving Chip Select ( S ) High.

Figure 4. Write Enable (WREN) Instruction Sequence

S

01 23 45 67

C

Instruction

DIO

High Impedance

DO

Write Disable (WRDI)

The Write Disable (WRDI) instruction (Figure 5.) 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 The Write Enable Latch (WEL) bit is reset under the

following conditions:

﹣ Power-up

﹣ Write Disable (WRDI) instruction completion

﹣ Write Status Register (WRSR) instruction completion

﹣ Page Program (PP) instruction completion

﹣ Sector Erase (SE) instruction completion

﹣ Block Erase (BE) instruction completion

﹣ Chip Erase (CE) instruction completion

Figure 5. Write Disable (WRDI) Instruction Sequence

S

01 23 45 67

C

Instruction

DIO

High Impedance

DO

(April, 2008, Version 0.0)

11

AMIC Technology Corp.

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