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PDF UPD78CP18 Data sheet ( Hoja de datos )
| Número de pieza | UPD78CP18 | |
| Descripción | 8-BIT SINGLE-CHIP MICROCOMPUTER | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD78CP18(A)
8-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
The µPD78CP18(A) is a version of the µPD78C18(A) in which the internal mask ROM is replaced by one-time PROM.
The one-time PROM version can be programmed once only by users, and is ideally suited for small-scall of many
differnt products, and rapid development and time-to-market of a new product.
The detailed functions are descrived in the following user's manual. Read this manual before starting design
work.
87AD series µPD78C18 user's manual: IEU-1314
FEATURES
• High reliability compared to the µPD78CP18
• Compatible with the µPD78C11A(A), 78C12A(A), 78C14(A), 78C18(A)
• Internal PROM: 32768 W × 8
• Internal PROM capacity can be changed by software to conform to the µPD78C11A(A), 78C12A(A), 78C14(A),
78C18(A).
• PROM programming characteristics: µPD27C256A compatible
• Power supply voltage range: 5 V ± 10 %
• Supports QTOP™ microcomputer
5
Remark QTOP microcomputer is the generic name of NEC's single-chip microcomputers for which NEC
provides total service including writing, marking, screening, and inspection.
ORDERING INFORMATION
Part Number
µPD78CP18GF(A)-3BE
µPD78CP18GQ(A)-36
Package
64-pin plastic QFP (14 × 20 mm)
64-pin plastic QUIP
Internal ROM
One-time PROM
One-time PROM
QUALITY GRADE
Part Number
µPD78CP18GF(A)-3BE
µPD78CP18GQ(A)-36
Quality Grade
Special
Special
Please refer to “Quality grade on NEC Semiconductor Devices” (Document number IEI-1209) published by
NEC Corporation to know the specification of quality grade on the devices and its recommended applications.
Document No. IC-3233A
(O. D. No. IC-8702A)
Date Published March 1995 P
Printed in Japan
The information in this document is subject to change without notice.
The mark 5 shows major revised points.
© 11999943
1 page  
µPD78CP18(A)
DIFFERENCES BETWEEN THE µPD78CP18(A) AND µPD78CP18
Item
Product
Name
µPD78CP18(A)
Quality grade
Special
Electrical
specifications
Package
Input leakage current
AN7 to AN0: ±1 µA (MAX.)
• 64-pin plastic QFP (14 × 20 mm)
• 64-pin plastic QUIP
µPD78CP18
Standard
Input leakage current
AN7 to AN0; ±10 µA (MAX.)
• 64-pin plastic shrink DIP (750 mil)
• 64-pin plastic QUIP
• 64-pin plastic QFP (14 × 20 mm)
• 64-pin ceramic shrink DIP with
window (750 mil)
• 64-pin ceramic WQFN
5
5 Page 
µPD78CP18(A)
2. MEMORY CONFIGURATION
The µPD78CP18(A) memory can operate in the following 4 modes according to the mode specification.
q µPD78C11A mode (see Figure 2-1)
q µPD78C12A mode (see Figure 2-2)
q µPD78C14 mode (see Figure 2-3)
q µPD78C18 mode (see Figure 2-4)
In addition, the internal PROM and internal RAM address ranges can be specified for efficient mapping of external
memory (excluding PROM) (see 3.2 “MEMORY MAPPING REGISTER (MM)”).
The vector area and call table area are common to all modes.
Setting the hardware/software STOP mode or HALT mode enables internal RAM data to be retained at a low
consumption current.
11
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| PDF Descargar | [ Datasheet UPD78CP18.PDF ] | |
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