MT29C4G48MAZAPAKD-5 IT Micron Technology Inc, MT29C4G48MAZAPAKD-5 IT Datasheet - Page 93

• Manufacturer Part Number: MT29C4G48MAZAPAKD-5 IT
• Description: MICMT29C4G48MAZAPAKD-5_IT 4G+2G MCP
• Manufacturer: Micron Technology Inc

One-Time Programmable (OTP) Operations
Legacy OTP Commands
PDF: 09005aef83ba4387
168ball_nand_lpddr_j42p_j4z2_j4z3_omap.pdf – Rev. H 3/11
This Micron NAND Flash device offers a protected, one-time programmable NAND
Flash memory area. Thirty full pages (2112 bytes per page) of OTP data are available on
the device, and the entire range is guaranteed to be good. The OTP area is accessible
only through the OTP commands. Customers can use the OTP area any way they
choose; typical uses include programming serial numbers or other data for permanent
storage.
The OTP area leaves the factory in an unwritten state (all bits are 1s). Programming or
partial-page programming enables the user to program only 0 bits in the OTP area. The
OTP area cannot be erased, whether it is protected or not. Protecting the OTP area pre-
vents further programming of that area.
Micron provides a unique way to program and verify data before permanently protect-
ing 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 FEATURE
(EFh) command to feature address 90h and write 01h to P1, followed by three cycles of
00h to P2-P4. For parameters to enter OTP mode, see Features Operations.
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-1Fh. To program an OTP page, issue the PROGRAM
PAGE (80h-10h) command. The pages must be programmed in the ascending order.
Similarly, to read an OTP page, issue the PAGE READ (00h-30h) command.
Protecting the OTP is done by entering OTP protect mode. To set the device to OTP
protect mode, issue the SET FEATURE (EFh) command to feature address 90h and write
03h to P1, followed by three cycles of 00h to P2-P4.
To determine whether the device is busy during an OTP operation, either monitor R/B#
or use the READ STATUS (70h) command.
To exit OTP operation or protect mode, write 00h to P1 at feature address 90h.
For legacy OTP commands, OTP DATA PROGRAM (A0h-10h), OTP DATA PROTECT
(A5h-10h), and OTP DATA READ (AFh-30h), refer to the MT29F4GxxAxC data sheet.
168-Ball NAND Flash and LPDDR PoP (TI OMAP) MCP
93
One-Time Programmable (OTP) Operations
Micron Technology, Inc. reserves the right to change products or specifications without notice.
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