AT27C2048-90PU Atmel, AT27C2048-90PU Datasheet - Page 9

• Manufacturer Part Number: AT27C2048-90PU
• Description: IC OTP 2MBIT 90NS 40DIP
• Manufacturer: Atmel

Specifications of AT27C2048-90PU

• Format - Memory: EPROMs
• Memory Type: OTP EPROM
• Memory Size: 2M (128K x 16)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

18. Rapid Programming Algorithm
0632F–EPROM–12/07
A 50 µs CE pulse width is used to program. The address is set to the first location. V
to 6.5V and V
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 verifi-
cation 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 checked. V
pared with the original data to determine if the device passes or fails.
PP
is raised to 13.0V. Each address is first programmed with one 50 µs CE pulse
PP
is then lowered to 5.0V and V
CC
to 5.0V. All words are read again and com-
AT27C2048
CC
is raised
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