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NEC D27128D is a 128 Kbit (16K x 8) UV-erasable EPROM in a 28-pin windowed ceramic DIP package. NEC’s data book specifies a 250 ns maximum access time for the unsuffixed 27128. New old stock (NOS).
Programming: This chip can be programmed with the Relatively Universal ROM Programmer (RURP) and is supported by the Firestarter software. Select the chip profile that matches this exact part and its datasheet programming voltage.
This lot is not advertised as blank-tested. Check the exact NEC device profile and pinout before programming; protect the window from UV light in storage.
The photographs show a sample of the actual stock; they have been cropped and exposure-adjusted.
NEC Memory Data Book (27128)
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