4 one-time prom screening – NEC uPD75P3116 User Manual
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PD75P3116
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Data Sheet U11369EJ3V0DS
8.4 One-Time PROM Screening
Due to its structure, the one-time PROM cannot be fully tested before shipment by NEC. Therefore, NEC recommends
that after the required data is written and the PROM is stored under the temperature and time conditions shown below,
the PROM should be verified via screening.
Storage Temperature
Storage Time
125˚C
24 hours
NEC offers QTOP microcontrollers for which one-time PROM writing, marking, screening, and verification are provided
at additional cost. For further details, contact an NEC sales representative.
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