Datenblatt-Suchmaschine für elektronische Bauteile |
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MC146805E2FN Datenblatt(PDF) 2 Page - InnovASIC, Inc |
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MC146805E2FN Datenblatt(HTML) 2 Page - InnovASIC, Inc |
2 / 31 page IA6805E2 Data Sheet Microprocessor Unit As of Production Version 00 Copyright © 2002 ENG21108140100 www.innovasic.com innovASIC Customer Support: The End of Obsolescence ™ Page 2 of 31 1-888-824-4184 Description The IA6805E2 (CMOS) Microprocessor Unit (MPU) is a low cost, low power MPU. It features a CPU, on-chip RAM, parallel I/O compatibility with pins programmable as input or output. The following paragraphs will further describe this system block diagram and design in more detail. PROGRAM COUNTER LOW 112x8 RAM ADDRESS DRIVE MUX BUS DRIVE CPU PORT A REG OSCILLATOR DATA DIR REG PORT B REG DATA DIR REG CPU CONTROL ALU BUS CONTROL STACK POINTER CONDITION CODE REGISTER INDEX REGISTER ACCUMULATOR PROGRAM COUNTER HIGH TIMER CONTROL PRESCALER TIMER/ COUNTER PA0 PA7 PA6 PA5 PA4 PA3 PA2 PA1 PB0 PB7 PB6 PB5 PB4 PB3 PB2 PB1 PA0 OSC1 OSC2 TIMER RESET_N LI IRQ_N B0 B7 B6 B5 B4 B3 B2 B1 A8 A12 A11 A10 A9 RW_N DS AS 8 A 5 6 5 8 8 X CC SP PCH PCL PORT A I/O LINES PORT B I/O LINES MULTIPLEXED ADDRESS DATA BUS ADDRESS BUS ADDRESS STROBE DATA STROBE READ/WRITE Figure 1. System Block Diagram |
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