mt29f1gxxabb Micron Semiconductor Products, mt29f1gxxabb Datasheet - Page 38

• Manufacturer Part Number: mt29f1gxxabb
• Description: 1gb X8, X16 Nand Flash Memory
• Manufacturer: Micron Semiconductor Products

OTP DATA READ AFh-30h
Figure 27:
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1gb_nand_m48a__2.fm - Rev. E 1/08 EN
WE#
R/B#
I/Ox
ALE
CLE
CE#
RE#
OTP DATA READ Operation
AFh
Notes: 1. The OTP page must be within the range 02h–0Bh.
add 1
Col
The OTP DATA READ (AFh-30h) command is used to read data from a page within the
OTP area. An OTP page within the OTP area is available for reading data whether or not
the area is protected.
To use the OTP DATA READ command, issue the AFh command. Next, issue 4 ADDRESS
cycles: the first 2 ADDRESS cycles are the column address, and for the remaining 2
cycles,
RANDOM DATA READ (05h-E0h) commands are supported during OTP DATA READ
operations.
R/B# goes LOW (
READ STATUS (70h) command and the RESET (FFh) command are the only commands
valid during the OTP DATA READ operation. For this operation, bits 5 and 6 of the status
register will reflect the state of R/B#. For details, refer to Table 9 on page 29.
Normal READ operation timings apply to OTP read accesses (see Figure 27). Additional
pages within the OTP area can be selected by repeating the OTP DATA READ command.
Note that if OTP DATA READ is followed by PAGE READ CACHE MODE, a RESET (FFh)
must be issued prior to issuing the PAGE READ CACHE MODE command. The maxi-
mum RESET time will not exceed 5µs.
add 2
Col
OTP address
select a page in the range of 02h–0Bh. Finally, issue the 30h command.
page
OTP
t
1
R) while the data is moved from the OTP page to the data register. The
00h
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30h
Micron Technology, Inc., reserves the right to change products or specifications without notice.
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1Gb: x8, x16 NAND Flash Memory
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Command Definitions
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