M45PE10 datasheet(13/34 Pages) STMICROELECTRONICS

部件名	M45PE10

功能描述	1 Mbit, Low Voltage, Page-Erasable Serial Flash Memory With Byte-Alterability and a 25 MHz SPI Bus Interface

PDF	34 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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M45PE10

Read Status Register (RDSR)

The Read Status Register (RDSR) instruction al-

lows the Status Register to be read. The Status

Program, Erase or Write cycle is in progress.

When one of these cycles is in progress, it is rec-

ommended to check the Write In Progress (WIP)

bit before sending a new instruction to the device.

It is also possible to read the Status Register con-

tinuously, as shown in Figure 10.

The status bits of the Status Register are as fol-

lows:

WIP bit. The Write In Progress (WIP) bit indicates

whether the memory is busy with a Write, Program

or Erase cycle. When set to 1, such a cycle is in

progress, when reset to 0 no such cycle is in

progress.

WEL bit. The Write Enable Latch (WEL) bit indi-

cates the status of the internal Write Enable Latch.

When set to 1 the internal Write Enable Latch is

set, when set to 0 the internal Write Enable Latch

is reset and no Write, Program or Erase instruction

is accepted.

Figure 10. Read Status Register (RDSR) Instruction Sequence and Data-Out Sequence

3456789 10 11 12 13 14 15

Instruction

AI02031E

6543210

Status Register Out

High Impedance

MSB

6543210

Status Register Out

MSB

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