Dataman S4 - Manual (Page 71)

DATAMAN S4 MANUAL
FUNC INFO = Chip Erase 71
FUNC BURN = Chip Erase
This command will Chip-Erase FLASH PROMs
and some EEPROMs.
Most EEPROMs and FLASH PROMs do not
need to be erased before programming – in
fact many do not support a Chip-Erase feature,
in which case S4 will display the following
message when this command is used:
>ERASE 2864
Sorry, impossible
Some FLASH PROMs, such as AMD/Intel 28
series FLASH and AMD 29 series MUST be
erased prior to programming – remember S4
doesn’t erase the device automatically, you
must use the Chip Erase command.
>ERASE
AMD 29F010
5V Erase
Press ENTER to erase the device, or ESC to
exit.