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UPD78P324 Datasheet 16-/8-bit Single-chip Microcomputers

Manufacturer: NEC (now Renesas Electronics)

Overview: DATA SHEET µPD78P324, 78P324(A) 16-/8-Bit Single-Chip Microputers 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.

Key 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 pro.

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UPD78P324 Distributor