Document
MC68HC705J1A MC68HRC705J1A MC68HSC705J1A MC68HSR705J1A
Technical Data
M68HC05
Microcontrollers
MC68HC705J1A/D Rev. 4, 5/2002
WWW.MOTOROLA.COM/SEMICONDUCTORS
MC68HC705J1A MC68HRC705J1A MC68HSC705J1A MC68HSR705J1A
Technical Data
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© Motorola, Inc., 2002
MC68HC705J1A — Rev. 4.0 MOTOROLA
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Revision History
Date Revision Level Description Figure 2-2. I/O Register Summary — Corrected reset state for last entry (Mask Option Register) May, 2002 4.0 Figure 2-4. Mask Option Register (MOR) — Corrected reset state 6.3.3 Pulldown Register A — Corrected note 6.4.3 Pulldown Register B — Corrected note Page Number(s) 37 41 91 94
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MC68HC705J1A — Rev. 4.0 MOTOROLA
Technical Data — MC68HC705J1A
List of Sections
Section 1. General Description . . . . . . . . . . . . . . . . . . . . 21 Section 2. Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Section 3. Central Processor Unit (CPU) . . . . . . . . . . . . 45 Section 4. Resets and Interrupts . . . . . . . . . . . . . . . . . . . 69 Section 5. Low-Power Modes. . . . . . . . . . . . . . . . . . . . . . 79 Section 6. Parallel Input/Output (I/O) Ports . . . . . . . . . . 87 Section 7. Computer Operating Properly (COP) Module . . . . . . . . . . . . . . . . . . . . . . . . . 97 Section 8. External Interrupt Module (IRQ). . . . . . . . . . 101 Section 9. Multifunction Timer Module . . . . . . . . . . . . . 109 Section 10. Electrical Specifications. . . . . . . . . . . . . . . 117 Section 11. Mechanical Specifications . . . . . . . . . . . . . 131 Section 12. Ordering Information . . . . . . . . . . . . . . . . . 135 Appendix A. MC68HRC705J1A . . . . . . . . . . . . . . . . . . . 137 Appendix B. MC68HSC705J1A . . . . . . . . . . . . . . . . . . . 141 Appendix C. MC68HSR705J1A . . . . . . . . . . . . . . . . . . . 145 Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
MC68HC705J1A — Rev. 4.0 MOTOROLA List of Sections
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List of Sections
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MC68HC705J1A — Rev. 4.0 MOTOROLA
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Table of Contents
Section 1. General Description
1.1 1.2 1.3 1.4 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Programmable Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.5 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 1.5.1 VDD and VSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 1.5.2 OSC1 and OSC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 1.5.2.1 Crystal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 1.5.2.2 Ceramic Resonator Oscillator . . . . . . . . . . . . . . . . . . . . . 28 1.5.2.3 RC Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 1.5.2.4 External Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 1.6 1.7 1.8 1.9 RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 IRQ/VPP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 PA0–PA7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 PB0–PB5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Section 2. Memory
2.1 2.2 2.3 2.4 2.5 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Memory Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Input/Output Register Summary . . . . . . . . . . . . . . . . . . . . . . . .35 RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
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Table of Contents
2.6 EPROM/OTPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 2.6.1 EPROM/OTPROM Programming . . . . . . . . . . . . . . . . . . . . . 38 2.6.2 EPROM Programming Register . . . . . . . . . . . . . . . . . . . . . 39 2.6.