ATmega328 EEPROM Write Cycle Efficiency

hi all,

i'm little confused built in eeprom. it's supposed able pass 100,000 write cycles, i've been unable find out if means 100,000 different individual bytes can rewritten or each byte can rewritten 100,000 times. further explain issue, have following code:

code: [select]


  (int i=0; < 64; i++) { eeprom.write (     i, array1[i] ); }
  (int i=0; < 64; i++) { eeprom.write (  i+64, array2[i] ); }
  (int i=0; < 64; i++) { eeprom.write ( i+128, array3[i] ); }
...etc...


i have series of 6 of these arrays, each 64 values - although these going more banks can be filled if please - part first 10 values used. segment of code run couple times day, questions are:

1. can each byte rewritten 100,000 times or can 100,000 bytes in total rewritten?
2. code set go through above loops if values haven't been changed. values "rewritten", if value doesn't change? i'm assuming answer question same answer values 0 , stay zero.

thanks in advance help!

pat

quote from: pattobrien on jun 17, 2014, 03:05 am

...each byte can rewritten 100,000 times.

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