UPD78P324

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. The EPROM product, which enables program writing, deletion, and rewriting, is the most suitable for system evaluation. The µPD78P324(A) is more reliable than the µPD78P324. The µPD78P324(A) is a product resulting from the µPD78324(A) whose internal mask ROM is replaced by a one-time PROM. For details of functions, please refer to the following User’s Manual. Reading this manual is indispensable especially for designing work. µPD78322 User’s Manual: IEU-1248 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 programming characteristic: µPD27C1001A compatible q QTOPTM microcomputer ...