GT28F160S3-140 데이터 시트보기 (PDF) - Intel

부품명

상세내역

제조사

GT28F160S3-140

WORD-WIDE FlashFile™ MEMORY FAMILY

Intel 

E

28F160S3, 28F320S3

4.1 Read Array Command

Upon initial device power-up and after exit from

deep power-down mode, the device defaults to read

array mode. This operation is also initiated by

writing the Read Array command. The device

remains enabled for reads until another command

is written. Once the internal WSM has started block

erase, program, or lock-bit configuration, the device

will not recognize the Read Array command until

the WSM completes its operation—unless the WSM

is suspended via an Erase-Suspend or Program-

Suspend command. The Read Array command

functions independently of the VPP voltage.

4.2 Read Query Mode Command

This section defines the data structure or

“database” returned by the Common Flash Interface

(CFI) Query command. System software should

parse this structure to gain critical information such

as block size, density, x8/x16, and electrical

specifications. Once this information has been

obtained, the software will know which command

sets to use to enable flash writes, block erases, and

otherwise control the flash component. The Query

is part of an overall specification for multiple

command set and control interface descriptions

called Common Flash Interface, or CFI.

4.2.1

QUERY STRUCTURE OUTPUT

The Query “database” allows system software to

gain critical information for controlling the flash

component. This section describes the device’s

CFI-compliant interface that allows the host system

to access Query data.

Query data are always presented on the lowest-

order data outputs (DQ0-7) only. The numerical

offset value is the address relative to the maximum

bus width supported by the device. On this device,

the Query table device starting address is a 10h

word address, since the maximum bus width is x16.

For this word-wide (x16) device, the first two bytes

of the Query structure, “Q” and ”R” in ASCII, appear

on the low byte at word addresses 10h and 11h.

This CFI-compliant device outputs 00H data on

upper bytes. Thus, the device outputs ASCII “Q” in

the low byte (DQ0-7) and 00h in the high byte

(DQ8-15).

Since the device is x8/x16 capable, the x8 data is

still presented in word-relative (16-bit) addresses.

However, the “fill data” (00h) is not the same as

driven by the upper bytes in the x16 mode. As in

x16 mode, the byte address (A0) is ignored for

Query output so that the “odd byte address” (A0

high) repeats the “even byte address” data (A0 low).

Therefore, in x8 mode using byte addressing, the

device will output the sequence “Q”, “Q”, “R”, “R”,

“Y”, “Y”, and so on, beginning at byte-relative

address 20h (which is equivalent to word offset 10h

in x16 mode).

At Query addresses containing two or more bytes

of information, the least significant data byte is

presented at the lower address, and the most

significant data byte is presented at the higher

address.

ADVANCE INFORMATION

17

Share Link: