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PF28F1602C3TD70

Intel® Advanced+ Boot Block Flash Memory (C3)

Intel 

C3 SCSP Flash Memory

3.0

3.1

3.2

Flash Memory Modes of Operation

The flash memory has four read modes:

• Read array

• Read configuration

• Read status

• CFI query

The write modes are:

• Program

• Erase

Three additional modes are available only during suspended operations:

• Erase suspend to program

• Erase suspend to read

• Program suspend to read

These modes are reached using the commands summarized in Table 5 “Flash Memory Command

Definitions” on page 19.

Read Array (FFh)

When F-RP# transitions from VIL (reset) to VIH, the flash memory device defaults to read array

mode and responds to the read control inputs without additional CUI commands.

In addition, the address of the desired location must be applied to the address balls. If the flash

memory device is not in read array mode, such as after a program or erase operation, the Read

Array command (FFh) must be written to the CUI before array reads can take place.

Read Identifier (90h)

The Read Configuration mode outputs three types of information:

• Manufacturer/device identifier

• Block locking status

• Protection register

1. To switch the flash memory device to this mode, write the read configuration command (90h).

In this mode, read cycles from addresses shown in Table 4 “Read Configuration Table” on

page 15 retrieve the specified information.

2. To return to read array mode, write the Read Array command (FFh).

26 Aug 2005

14

Intel® Advanced+ Boot Block Flash Memory (C3) SCSP Family

Order Number: 252636, Revision: 004

Datasheet

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