AT27C020-55PC Atmel, AT27C020-55PC Datasheet - Page 8

• Manufacturer Part Number: AT27C020-55PC
• Description: IC OTP 2MBIT 55NS 32DIP
• Manufacturer: Atmel

Specifications of AT27C020-55PC

• Format - Memory: EPROMs
• Memory Type: OTP EPROM
• Memory Size: 2M (256K x 8)
• Speed: 55ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-DIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AT27C02055PC

Rapid Programming Algorithm
A 100 µs PGM pulse width is used to program. The
address is set to the first location. V
V
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
8
PP
is raised to 13.0V. Each address is first programmed
AT27C020
CC
is raised to 6.5V and
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
5.0V. All bytes are read again and compared with the origi-
nal data to determine if the device passes or fails.
PP
is then lowered to 5.0V and V
CC
to