AT27C040-70PU Atmel, AT27C040-70PU Datasheet - Page 9

• Manufacturer Part Number: AT27C040-70PU
• Description: IC OTP 4MBIT 70NS 32DIP
• Manufacturer: Atmel

Specifications of AT27C040-70PU

• Format - Memory: EPROMs
• Memory Type: OTP EPROM
• Memory Size: 4M (512K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-DIP (0.600", 15.24mm)
• Organization: 512 K x 8
• Access Time: 70 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: 85 C
• Interface Type: Parallel
• Minimum Operating Temperature: - 40 C
• Mounting Style: Through Hole
• Supply Voltage Range: 4.5V To 5.5V
• No. Of Pins: 32
• Operating Temperature Range: -40°C To +85°C
• Ic Interface Type: Parallel
• Operating Temperature Max: 85°C
• Rohs Compliant: Yes
• Memory Configuration: 512K X 8
• Memory Case Style: DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

18. Rapid Programming Algorithm
0189H–EPROM–12/07
A 100 µs CE pulse width is used to program. The address is set to the first location. V
raised to 6.5V and V
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
are read again and compared 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 100 µs
PP
is then lowered to 5.0V and V
CC
AT27C040
to 5.0V. All bytes
CC
is
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