AT27C2048 Ver la hoja de datos (PDF) - Atmel Corporation

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AT27C2048

2-Megabit (128K x 16) OTP EPROM

Atmel Corporation 

Rapid Programming Algorithm

A 50 µs CE pulse width is used to program. The address is

set to the first location. VCC is raised to 6.5V and VPP is

raised to 13.0V. Each address is first programmed with one

50 µs CE pulse without verification. Then a verifica-

tion/reprogramming loop is executed for each address. In

the event a word fails to pass verification, up to 10 succes-

sive 50 µs pulses are applied with a verification 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. VPP is then lowered to 5.0V and VCC to 5.0V. All

words are read again and compared with the original data

to determine if the device passes or fails.

AT27C2048

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