MX26L6419 Просмотр технического описания (PDF) - Macronix International

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MX26L6419

64M [x16] SINGLE 3V PAGE MODE MTP MEMORY

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Read Array Command

The device is in Read Array mode on initial device power

up and after exit from power down, or by writing FFH to

the Command User Interface. The read configuration reg-

ister defaults to asynchronous read page mode. The de-

vice remains enabled for reads until another command

is written. The Read Array command functions indepen-

dently of the VPEN voltage.

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 informa-

tion has been obtained, the software will know which

command sets to use to enable MTP writes, block

erases, and otherwise control the MTP component.

Query Structure Output

The Query Database allows system software to gain in-

formation for controlling the MTP component. This sec-

tion describes the device CFI-compliant interface that

allows the host system to access Query data.

Query data are always presented on the lowest-order

data outputs (DQ 0-7) only. The numerical offset value is

the address relative to the maximum bus width supported

by the device. On this family of devices, the Query table

device starting address is a 10h, which is a word ad-

dress for x16 devices.

For a 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-com-

pliant device outputs 00H data on upper bytes. Thus, the

device outputs ASCII "Q" in the low byte (DQ 0-7 ) and

00h in the high byte (DQ 8-15 ).

At Query addresses containing two or more bytes of in-

formation, the least significant data byte is presented at

the lower address, and the most significant data byte is

presented at the higher address.

P/N:PM0946

10

MX26L6419

REV. 0.3, OCT. 08, 2003

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