AT27BV256-90JI Atmel, AT27BV256-90JI Datasheet - Page 10

• Manufacturer Part Number: AT27BV256-90JI
• Description: IC OTP 256KBIT 90NS 32PLCC
• Manufacturer: Atmel

Specifications of AT27BV256-90JI

• Format - Memory: EPROMs
• Memory Type: OTP EPROM
• Memory Size: 256K (32K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AT27BV25690JI

18. Rapid Programming Algorithm
A 100 µs CE pulse width is used to program. The address is set to the first location. V
is
CC
raised to 6.5V and V
is raised to 13.0V. Each address is first programmed with one 100 µs
PP
CE 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
to 5.0V. All bytes
PP
CC
are read again and compared with the original data to determine if the device passes or fails.
AT27BV256
10
0601E–EPROM–12/07