mt29f1gxxabb Micron Semiconductor Products, mt29f1gxxabb Datasheet - Page 26
mt29f1gxxabb
Manufacturer Part Number
mt29f1gxxabb
Description
1gb X8, X16 Nand Flash Memory
Manufacturer
Micron Semiconductor Products
Datasheet
1.MT29F1GXXABB.pdf
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ONFI READ ID
Figure 16:
PDF: 09005aef81dc05df / Source: 09005aef821d5f08
1gb_nand_m48a__2.fm - Rev. E 1/08 EN
I/O0-7
WE#
ALE
RE#
CLE
ONFI READ ID Operation
90h
The ONFI READ ID function identifies that the device supports the ONFI specification. If
the device supports the ONFI specification, then the ONFI signature will be returned.
The ONFI signature is the ASCII encoding of ONFI:
• O = 4Fh
• N = 4Eh
• F = 46h
• I = 49h.
Reading beyond these four values yields indeterminate data. Figure 16 defines the ONFI
READ ID behavior and timings.
Issuing a 90h command to the command register and a 20h command to the address
register puts the device into ONFI read ID mode. The device will remain in this mode
until another valid command and address are issued. If a 90h command is issued with-
out an address, the device will remain in the ONFI read ID mode.
20h
26
4Fh
Micron Technology, Inc., reserves the right to change products or specifications without notice.
4Eh
1Gb: x8, x16 NAND Flash Memory
46h
Command Definitions
©2006 Micron Technology, Inc. All rights reserved.
49h
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