s1r72803 Epson Electronics America, Inc., s1r72803 Datasheet - Page 22

• Manufacturer Part Number: s1r72803
• Description: Link/transaction Controller
• Manufacturer: Epson Electronics America, Inc.

S1R72803F00A
7.6 FLASH CONTROLLER
This IC is provided with a function to perform Erase and
Write to the Flash ROM.
(1) Chip Erase
(2) Sector Erase
18
According to a specified sequence, you can erase all
memory cells in the built-in Flash ROM to put them
in “1” status.
After erasing the chip, check that the data of all
memory cells is “1”.
This IC is ready for the Sector Erase in the unit of
512 words/sector.
According to a specified sequence, you can erase all
EPSON
(3) Write
memory cells in the built-in Flash ROM to put them
in “1” status.
After erasing the chip, check that the data of all
memory cells is “1”.
Write is complete if you continue writing Write data
in the unit of word until writing of all sectors (512
words) finishes.
On completion of the Sector Write, compare all data
in the sectors with original data for confirmation.
You cannot change the data of the memory cell from
“0” to “1” by writing.