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HC705C9AGRS/D Datasheet(PDF) 6 Page - NXP Semiconductors |
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HC705C9AGRS/D Datasheet(HTML) 6 Page - NXP Semiconductors |
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6 / 157 page ![]() General Release Specification MC68HC705C9A — Rev. 2.0 Table of Contents Section 3. Central Processing Unit 3.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 3.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 3.3 CPU Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 3.3.1 Accumulator (A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 3.3.2 Index Register (X) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 3.3.3 Program Counter (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 3.3.4 Stack Pointer (SP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 3.3.5 Condition Code Register (CCR) . . . . . . . . . . . . . . . . . . . . .44 Section 4. Interrupts 4.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 4.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 4.3 Non-Maskable Software Interrupt (SWI). . . . . . . . . . . . . . . . . .47 4.4 External Interrupt (IRQ or Port B) . . . . . . . . . . . . . . . . . . . . . . .47 4.5 Timer Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48 4.6 SCI Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48 4.7 SPI Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48 Section 5. Resets 5.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 5.3 Power-On Reset (POR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 5.4 RESET Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 5.5 Computer Operating Properly (COP) Reset . . . . . . . . . . . . . . .54 5.6 MC68HC05C9A Compatible COP . . . . . . . . . . . . . . . . . . . . . .54 5.6.1 C9A COP Reset Register . . . . . . . . . . . . . . . . . . . . . . . . . .55 5.6.2 C9A COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . .56 5.7 MC68HC05C12A Compatible COP . . . . . . . . . . . . . . . . . . . . .58 5.8 MC68HC05C12A Compatible COP Clear Register . . . . . . . . .58 5.9 COP During Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58 5.10 COP During Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 5.10.1 Clock Monitor Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 5.10.2 STOP Instruction Disable Option . . . . . . . . . . . . . . . . . . . .59 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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