ST72340, ST72344, ST72345
DATA EEPROM (Cont’d)
Figure 9. Data E2PROM Write Operation
ROW
DEFINITION
⇓ Row / Byte ⇒
0
1
...
N
0123
... 30 31
Physical Address
00h...1Fh
20h...3Fh
Nx20h...Nx20h+1Fh
Read operation impossible
Read operation possible
E2LAT bit
E2PGM bit
Byte 1 Byte 2
Byte 32
Programming cycle
PHASE 1
Writing data latches
PHASE 2
Waiting E2PGM and E2LAT to fall
Set by USER application
Cleared by hardware
Note: If a programming cycle is interrupted (by RESET action), the integrity of the data in memory will not
be guaranteed.
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