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*      HELP FOR SST DEVICES (informal document)                             *
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**    To find the application notes for your device search for the         **
**    'core' part name.  As an example using the 49LF016C 32 pin TSOP      **
**    you would search this document for the entry "49LF016"               **
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49LF004C 
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Data in the programmer's User Memory is partitioned as follows:

                          in bytes
                        --------------

   USER PROGRAM MAIN MEMORY : 000000 -> 07FFFF hex ( Sector #  0 ->10)
   PROTECTED DATA AREA :      080000 -> 082FFF hex ( Sector # 11 ->13)
   SECURITY ID SPACE :        083000 -> 08301F hex

This device has 12K bytes of PROTECTED DATA AREA located at [80000h-82FFFh].

This device offers 256-bit SECURITY ID space ( 32 bytes) represented in the
last 32 bytes of device data [at 83000H-->8301FH ].

The first 64 bits of this SECURITY ID space [ 83000H-->83007H ]are factory programmed.
The remaining 192 bits of SECURITY ID space,[ 83008H-->8301FH ] are one time user programmable.

To enable programming and verifying user programmable SECURITY ID bits 
[ 83008H-->8301FH ] you will need to make sure that the "Program protect reg" flag is switched to "Y" in the Program device screen.

These user programmable. SECURITY ID bits [ 83008H-->8301FH ]can be further disabled for any write operations by setting the "Program security fuse" switch to "Y" in the Program device screen.

NOTE:-The user programmable. SECURITY ID bits [ 83008H-->8301FH ] are one time programmable. An attempt to re-program locations [ 83008H-->8301FH ] will result in a programming error.

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49LF016CE
49LF016CW 
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Data in the programmer's User Memory is partitioned as follows:

                          in bytes
                        --------------

   USER PROGRAM MAIN MEMORY :  000000 --> 1FFFFF hex ( Sector #  0 -->34}
   SECURITY ID SPACE :         200000 --> 20001F hex

This device offers 256-bit SECURITY ID space ( 32 bytes) represented in the 
last 32 bytes of device data [at 200000H-->20001FH ].

The first 64 bits of this SECURITY ID space [ 200000H-->200007H ]are factory programmed.
The remaining 192 bits of SECURITY ID space,[ 200008H-->20001FH ] are one time user programmable.

To enable programming and verifying user programmable SECURITY ID bits 
[ 200008H-->20001FH ] you will need to make sure that the "Program protect reg" flag is switched to "Y" in the Program device screen.

These user programmable. SECURITY ID bits [ 200008H-->20001FH ]can be further disabled for any write operations by setting the "Program security fuse" switch to "Y" in the Program device screen.

NOTE:-The user programmable. SECURITY ID bits [ 200008H-->20001FH ] are one time programmable. An attempt to re-program locations [ 200008H-->20001FH ] will result in a programming error.

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