UPD78P324 - NEC

UPD78P324 16-/8-Bit Single-Chip Microcomputers

DATA SHEET µPD78P324, 78P324(A) 16-/8-Bit Single-Chip Microcomputers MOS INTEGRATED CIRCUIT The µPD78P324 is a product in which the µPD78324’s internal mask ROM is replaced by a one-time PROM or EPROM. The one-time PROM product, which enables writing only once, is effective for multiple-device small production of sets or early start of mass-production. Th.

Features

q µPD78324 compatible
• For mass-production, this can be replaced by the µPD78324 incorporated in the mask ROM. q Minimum instruction run time: 250 ns (with the external clock operating at 16 MHz): µPD78P324 & 78P324(A) 320 ns (with the external clock operating at 12.5 MHz): µPD78P324(A1) & 78P324(A2) q Internal PROM: 32768 x 8 bits
• Writing enabled only once (windowless one-time PROM product)
• Elimination by ultraviolet light and electrical rewriting enabled (EPROM product with window): µPD78P324 only q ECC circuit incorporated
• High internal PROM content reliablility possible q PROM progr.