Owner's manual

AT27LV020A

Rapid

Programming Algorithm

A 100 µs PGM pulse width is used to program. The

address is set to the first location. V

is raised to 6.5V and

is raised to 13.0V. Each address is first programmed

with one 100 µs PGM

pulse without verification. Then a

verification/reprogramming loop is executed for each

address. In the event a byte fails to pass verification, up to

10 successive 100 µs pulses are applied with a verification

after each pulse. If the byte fails to verify after 10 pulses

have been applied, the part is considered failed. After the

byte verifies properly, the next address is selected until all

have been checked. V

is then lowered to 5.0V and V

5.0V. All bytes are read again and compared with the origi-

nal data to determine if the device passes or fails.