DATA SHEET
MOS INTEGRATED CIRCUIT
µPD78P018FY
8-BIT SINGLE-CHIP MICROCONTROLLER
DESCRIPTION
The µPD78P018FY is a member of the µPD78018FY Subseries of 78K/0 Series products. The internal mask ROM
of the µPD78018FY is replaced with one-time PROM or EPROM.
Because the µPD78P018FY can be programmed by users, it is ideally suited for applications involving the evaluation
of systems in development stages, small-scale production of many different products, and rapid development and time-
to-market of new products.
Caution
The µPD78P018FYDW and 78P018FYKK-S are not guaranteed to maintain the reliability level
required for mass production of the customer's devices. Please use only experimentally or for
evaluation purposes during trial manufacture.
Detailed function descriptions are provided in the following user's manuals. Be sure to read them before designing.
µPD78018F, 78018FY Subseries User's Manual: U10659E
78K/0 Series User's Manual – Instructions: U12326E
FEATURES
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Pin compatible with mask ROM version (except VPP pin)
Internal PROM: 60 Kbytes Note 1
µPD78P018FYDW, 78P018FYKK-S: Re-programmable (suited for system evaluation)
µPD78P018FYCW, 78P018FYGC-AB8: Programmable only once (suited for small-scale production)
Internal high-speed RAM: 1024 bytes Note 1
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Internal expansion RAM: 1024 bytes Note 2
Internal buffer RAM: 32 bytes
Supports the I2C bus interface
Operable over same supply voltage range as mask ROM version: VDD = 1.8 to 5.5 V (except an A/D converter)
QTOP™ microcontroller supported
Notes 1. The capacities of internal PROM and internal high-speed RAM can be changed by means of the internal
memory size switching register (IMS).
2. The capacity of the internal expansion RAM can be changed by means of the internal expansion RAM size
switching register (IXS).
Remarks 1. QTOP Microcontroller is a general term for microcontrollers which incorporate one-time PROM and are totally
supported by NEC's programming service (from programming to marking, screening, and verification).
2. For the differences between the PROM version and mask ROM versions, refer to 1. DIFFERENCES BETWEEN
THE µPD78P018FY AND MASK ROM VERSIONS.
In this document, the term PROM is used in parts common to one-time PROM versions and EPROM versions.
The information in this document is subject to change without notice.
The mark
shows major revised points.
Document No. U10989EJ3V0DS00 (3rd edition)
Date Published December 1998 N CP(K)
Printed in Japan
1994
©