AT27C020-70JC Atmel, AT27C020-70JC Datasheet - Page 8

• Manufacturer Part Number: AT27C020-70JC
• Description: IC OTP 2MBIT 70NS 32PLCC
• Manufacturer: Atmel

Specifications of AT27C020-70JC

• Format - Memory: EPROMs
• Memory Type: OTP EPROM
• Memory Size: 2M (256K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-PLCC
• Density: 2Mb
• Organization: 256Kx8
• Interface Type: Parallel
• Bus Type: Parallel
• In System Programmable: External
• Access Time (max): 70ns
• Package Type: PLCC
• Reprogramming Technique: OTP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 25mA
• Pin Count: 32
• Mounting: Surface Mount
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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