How common is OTP support in NAND flash?

[Ricard Wanderlof]

> On Sun, 2012-05-13 at 07:25 -0700, Subodh Nijsure wrote:
>> I see that MTD char drivers have support for programming the OTP pages
>> on NAND flash, some questions regarding that.
>>
>> Do most flash chip vendors support on-flash OTP pages or if one develops
>> product that depends on using data from flash OTP, one would be locked
>> into that specific vendors.
>>
>> And does anybody know if these OTP pages are also subjected to
>> bit-flipping or one shouldn't have to worry about that for OTP pages?

I actually can't say I know, but since it is OTP, it's not possible to 
erase and reprogram the data; and it's intended use for more or less 
permanent information would strongly suggest that it must be an array of 
classic EPROM cells with essentially no bit rot or it wouldn't be very 
useful.

/Ricard
-- 
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
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