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Número de pieza | UPD556 | |
Descripción | EVACHIP-43 | |
Fabricantes | NEC | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de UPD556 (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
No Preview Available ! NEe Microcomputers, Inc.
NEe
fLPD556
EVACHIP·43
DESCR IPTION
The IlPD556 is an evaluation chip for the IlCOM-43/44/45 single chip microcomputers_
Designed to be used for both hardware and software debugging, the EVACH IP-43 is
functionally equivalent to the IlCOM-43, except that it does not contain on-chip ROM.
Instead, it is able to address external memory. In addition, in order to facilitate debug-
ging, the IlPD556 is capable of displaying the contents of the internal accumulator and
data pointer and of being single stepped.
When the IlPD556 is being used to evaluate IlCOM-44/45 designs, the external memory
capacity should be restricted to that of the respective.on-chip ROM and the instructions
should be restricted to the 58 comprising the IlCOM-44/45 instruction set.
FEATU RES
• 4-bit Parallel Processor
• Full 80 Instruction Set of IlCOM-43
• lOlls Instruction Cycle
• Capable of addressing 2K x B-bits of external program memory
• Single step capability
• Full Functionality of IlCOM-43
• Single supply: -10V PMOS Technology
• Available in a 64-pin Ceramic Quad-in-line Package
PIN CONFIGURATION
PIN NAMES
PFo PF3
PGo PG3
PHD PH3
Plo PI2
PAD PA3
PBO PB3
PCO PC3
INT
RES
POD P03
PEa - PEJ
BREAK
STEP
Ace/PC
Po - PlO
'0 - 17
CLO Cl,
TEST
Output PDft F
OutPUt Po.! G
OutPut POri H
Output Port I
Input PO'! A
Input Port 8
Input/Output Port C
Interrupt Input
Reset
InputJOutput Pon D
Output Port E
Hold Input
Single 51ep Input
Dlsplav Ace/PC Input
PC OutPut
Instruction Input
External Clock Source
Tied to VSS iGNOI
205
1 page |
Páginas | Total 4 Páginas | |
PDF Descargar | [ Datasheet UPD556.PDF ] |
Número de pieza | Descripción | Fabricantes |
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UPD553 | 4-BIT SINGLE CHIP MICROCOMPUTER | NEC |
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