AT27C400

9

Rapid Programming Algorithm

A 50

µs CE pulse width is used to program. The address is

is raised to 13.0V. Each address is first programmed with

one 50

µs CE pulse without verification. Then a verification/

reprogramming loop is executed for each address. In the

event a word fails to pass verification, up to 10 successive

50

µs pulses are applied with a verification after each

pulse. If the word fails to verify after 10 pulses have been

applied, the part is considered failed. After the word verifies

properly, the next address is selected until all have been

words are read again and compared with the original data

to determine if the device passes or fails.