MT29F8G08ABABAWP-IT:B Micron Technology Inc, MT29F8G08ABABAWP-IT:B Datasheet - Page 82

• Manufacturer Part Number: MT29F8G08ABABAWP-IT:B
• Description: MICMT29F8G08ABABAWP-IT:B 8GB ASYNCHRONOU
• Manufacturer: Micron Technology Inc

Specifications of MT29F8G08ABABAWP-IT:B

• Cell Type: NAND
• Density: 8Gb
• Interface Type: Parallel
• Boot Type: Not Required
• Address Bus: 30b
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Program/erase Volt (typ): 2.7 to 3.6V
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8b
• Number Of Words: 1G
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Compliant

One-Time Programmable (OTP) Operations
PDF: 09005aef8386131b / Source: 09005aef838cad98
m61a_async_sync_nand.fm - Rev. A 2/09 EN
This Micron NAND Flash device offers a protected, one-time programmable NAND
Flash memory area. Thirty full pages (4,320 bytes per page) of OTP data are available on
the target, and the entire range is guaranteed to be good. Customers can use the OTP
area in any way they desire; typical uses include programming serial numbers or other
data for permanent storage.
In Micron NAND Flash devices, the OTP area leaves the factory in an erased state (all bits
are "1"). Programming enables the user to program only "0" bits in the OTP area. The
OTP area cannot be erased, even if it is not protected. Protecting the OTP area simply
prevents further programming of the OTP area.
While the OTP area is referred to as "one-time programmable," Micron provides a
unique way to program and verify data-before permanently protecting it and preventing
future changes.
The OTP area is only accessible while in OTP operation mode. To set the device to OTP
operation mode, issue the SET FEATURES (EFh) command to feature address 90h and
write 01h to P1, followed by 3 cycles of 00h to P2 through P4.
When the device is in OTP operation mode, all subsequent PAGE READ (00h-30h) and
PROGRAM PAGE (80h-10h) commands are applied to the OTP area. The OTP area is
assigned to page addresses 02h through 1Fh.
OTP programming and protection are achieved in two discrete operations. Each page in
the OTP area is programmed using the PROGRAM OTP PAGE (80h-10h) command. The
pages in the OTP area (02h-1Fh) must be programmed in ascending order.
To protect the OTP area, issue the 80h command followed by five address cycles (00h-
00h-01h-00h-00h), followed by the 10h command. R/B# goes LOW for
To read pages in the OTP area, whether or not the area is protected, issue the PAGE READ
(00h-30h) command.
ERASE commands are not valid while the device is in OTP operation mode.
To exit OTP operation mode, issue the SET FEATURES (EFh) command to feature
address 90h and write 00h to P1 through P4.
If the host device issues a PAGE PROGRAM (80h-10h) command to an address beyond
the maximum page-address range, the device will be busy for
register bit will be"0," meaning that the page is write-protected.
If the host device issues the PAGE READ (00h-30h) command to an address beyond the
maximum page-address range, the data output will not be valid. To determine whether
or not the device is busy during an OTP operation, either monitor R/B# or use the READ
STATUS (70h) command. Use of the SELECT LUN WITH STATUS (78h) command is
prohibited while the OTP operation is in progress.
If the RESET (FFh) command is issued while in OTP operation mode, the device will exit
OTP operation mode and enter normal operating mode. If the device is in the synchro-
nous interface it will exit OTP operation and enter normal operation mode in asynchro-
nous interface.
If the SYNCHRONOUS RESET (FCh) command is issued while in the OTP operation
mode, the device will exit OTP operation mode and stay in synchronous interface.
Micron Confidential and Proprietary
8Gb Asychronous/Synchronous NAND Flash Memory
82
Micron Technology, Inc., reserves the right to change products or specifications without notice.
Command Definitions
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©2008 Micron Technology, Inc. All rights reserved.
OBSY and the WP# status
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PROG.
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