SA25F005LEM8 Ver la hoja de datos (PDF) - Saifun Semiconductors

Número de pieza

componentes Descripción

Fabricante

SA25F005LEM8

512Kb Serial Flash with 25MHz SPI Bus Interface

Saifun Semiconductors 

General Description

The SA25F005 is a 512Kb (256K X 2)

CMOS non-volatile serial Flash Memory.

This device fully conforms to the SPI 4-wire

protocol, is enabled through the Chip Select

(CSb) pin, and uses Clock (SCK), Data-in

(SI) and Data-out (SO) pins to

synchronously control data transfer

between the SPI microcontroller and the

Serial FLASH memory.

The memory can be programmed from 1 up

to 256 bytes at a time via the Page

Program (PP) instruction.

The memory is organized into two sectors.

Each sector contains 128 pages, with each

page being 256 bytes wide. The entire

memory can therefore be viewed as

consisting of 256 pages, or 65,536 bytes.

The memory can be erased in one of the

following ways:

•= 256 bytes at a time, using the Page

Erase (PE) instruction

•= 256 Kb at a time, using the Sector

Erase (SE) instruction

•= 512 Kb at a time, using the Bulk

Erase (BE) instruction

Each device requires only a 3.0V power

supply (2.7 V to 3.6 V) for both read and

write functions. Internally generated and

regulated voltages are provided for the

program and erase operations. The

SA25F005 does not require a VPP supply.

SA25F005 Advanced Information

SAIFUN

2

The HOLDb pin may be used to suspend

any serial communication without resetting

the serial sequence. In addition, the serial

interface allows a minimal-pin-count

packaging designed to simplify PC board

layout requirements and offers the designer

a variety of low-voltage and low-power

options.

The SA25F005 is available in a

space-saving, 8-lead narrow SOIC package

The SA25F005 is part of the SPI Flash and

EEPROM family. It is designed to work with

any

SPI-compatible,

high-speed

microcontroller, and offers both hardware

(WPb pin) and Software (“block protect”)

data protection. For example, programming

a 2-bit code into the status register prevents

program with top ¼, top ½ or entire array

write protection and enables block write

protection. Separate program enable and

program disable instructions are provided

for additional data protection. Hardware

data protection is provided via the WPb pin

to protect against inadvertent write attempts

to the status register.

Saifun’s SPI Serial Flash products are

designed and tested for applications

requiring high endurance and low power

consumption for a continuously reliable

non-volatile solution for all markets.

Share Link: