A25L16PUM-F datasheet(11/38 Pages) AMICC

Part #	A25L16PUM-F

Description	16 Mbit, Low Voltage, Serial Flash Memory With 85MHz SPI Bus Interface

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Manufacturer	AMICC [AMIC Technology]

Direct Link	http://www.amictechnology.com

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A25L16P Series

PRELIMINARY

(April, 2007, Version 0.6)

10

AMIC Technology Corp.

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), Bulk Erase (BE) and

Write Status Register (WRSR) 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

C

DIO

DO

High Impedance

Instruction

0 1 23 45 6 7

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

﹣

Bulk Erase (BE) instruction completion

Figure 5. Write Disable (WRDI) Instruction Sequence

S

C

DIO

DO

High Impedance

Instruction

01 2 3 4 5 67

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