NEC mPD78C14 A Schematics

NEC mPD78C14 A Schematics Manual pdf 1 page image

© 1994TheμPD78C14(A) is a single-chip, CMOS 8-bit microcontroller in which a 16-bit ALU, a ROM, a RAM, an A/D converter,a multifunction timer/event counter, and a serial interface are all integrated. Moreover, a 48-Kbyte external expansionmemory (ROM/RAM) can be connected.Since theμPD78C14(A) uses the CMOS construction, its operations are performed with low power consumption. Byusing the standby function, functions such as data retention are performed with lower power consumption.For details on functions, refer to the User’s Manual listed below. Please read it before starting design work.87AD seriesμPD78C18 User’s Manual: IEU-1314FEATURESHigh reliability as compared withμPD78C14159 instructions: 87AD instruction setMultiply and divide instructions, 16-bit arithmetic operation instructionsInstruction cycle: 0.8μs at 15 MHzInternal ROM: 16384 W x 8Internal RAM: 256 W x 8Direct addressing to an external memory (ROM/RAM) up to 64 KbytesHighly accurate 8-bit A/D converter: Eight analog inputsGeneral-purpose serial interface: Asynchronous, synchronous, and I/O interface modesMultifunction 16-bit timer/event counterTwo 8-bit timersI/O lines: 44Interrupt functions: Three external, eight internal• Non-maskable interrupt: 1• Maskable interrupts: 10Zero-cross detection function (two inputs)Standby functions: HALT mode, Hardware/software STOP modeORDERING INFORMATIONPart number Package Quality gradeμPD78C14G(A)-xxx-36 64-pin plastic QUIP SpecialμPD78C14GF(A)-xxx-3BE 64-pin plastic QFP (14 x 20 mm) SpecialμPD78C14L(A)-xxx 68-pin plastic QFJ (950 x 950 mil) SpecialRemark xxx is a ROM code suffix.Document No. IC-2813B(O.D. No. IC-8242B)Date Published May 1995 PPrinted in JapanμPD78C14(A)MOS INTEGRATED CIRCUIT8-BIT SINGLE-CHIP MICROCONTROLLER (WITH A/D CONVERTER)Please refer to “Quality grade on NEC Semiconductor Devices” (Document number IEI-1209) published byNEC Corporation to know the specification of quality grade on the devices and its recommended applications.© 1991H The mark shows revised points.*DATA SHEETThe information in this document is subject to change without notice.*