M68hc11rm

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M68HC11
Reference Manual

M68HC11
Microcontrollers
M68HC11RM/D Rev. 6, 4/2002

WWW.MOTOROLA.COM/SEMICONDUCTORS

M68HC11
Reference Manual

To provide the most up-to-date information, the revision of our documents on the World Wide Web will be the most current. Your printed copy may be an earlier revision. To verify you have the latest information available, refer to:http://www.motorola.com/semiconductors/ The following revision history table summarizes changes contained in this document. For your convenience, the page number designators have been linked to the appropriate location.

Motorola and the Stylized M Logo are registered trademarks of Motorola, Inc. DigitalDNA is a trademark of Motorola, Inc.

© Motorola, Inc., 2002

M68HC11 — Rev. 6 MOTOROLA

ReferenceManual 3

Revision History
Revision History
Date June, 2001 February, 2002 Revision Level 4 Index — Updated 5 Figure 9-4. Baud Rate Control Register (BAUD) — Address designation corrected to $102B ADD Instruction —Corrected table head from ADCA to ADDA AND Instruction — Corrected table head from ADCA to ANDA ASL Instruction —Corrected table heads ASLA (IMM) to ASLA (INH) and ASLB (DIR) to ASLB(INH) ASR Instruction — Corrected table heads ASRA (IMM) to ASRA (INH) and ASRB (DIR) to ASRB (INH) April, 2002 6 BIT Instruction — Corrected second table entry for Data under BITA (IND,Y) from AS to A5 and under BITB (IND,Y) from ES to E5 CLR Instruction — Corrected table head from CLRA (IMM) to CLRA (INH) and CLRB (DIR) to CLRB (INH) STY Instruction — Corrected second table entry for Data underSTY (IND,X) EE to EF WAI Instruction — Changed I bit designation from 1 to — 631 327 496 498 499 501 Description Reformatted to meet current publications standards Page Number(s)

510

529 584 598

Reference Manual 4

M68HC11 — Rev. 6 MOTOROLA

Reference Manual — M68HC11

List of Sections

Section 1. General Description . . . . . . . . . . . . . . . . . . . . 27 Section 2. Pins andConnections . . . . . . . . . . . . . . . . . . 35 Section 3. Configuration and Modes of Operation . . . . 85 Section 4. On-Chip Memory . . . . . . . . . . . . . . . . . . . . . . 121 Section 5. Resets and Interrupts . . . . . . . . . . . . . . . . . . 159 Section 6. Central Processor Unit (CPU) . . . . . . . . . . . 197 Section 7. Parallel Input/Output. . . . . . . . . . . . . . . . . . . 229Section 8. Synchronous Serial Peripheral Interface . . . . . . . . . . . . . . . . . . . 291 Section 9. Asynchronous Serial Communications Interface. . . . . . . . . . . . . . 317 Section 10. Main Timer and Real-Time Interrupt . . . . . 367 Section 11. Pulse Accumulator . . . . . . . . . . . . . . . . . . . 443 Section 12. Analog-to-Digital Converter System . . . . . 459 Appendix A. Instruction SetDetails . . . . . . . . . . . . . . . 487 Appendix B. Bootloader Listings . . . . . . . . . . . . . . . . . 603 Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 631

M68HC11 — Rev. 6 MOTOROLA List of Sections

Reference Manual 5

List of Sections

Reference Manual 6 List of Sections

M68HC11 — Rev. 6 MOTOROLA

Reference Manual — M68HC11

Table ofContents

Section 1. General Description
1.1 1.2 1.3 1.4 1.5 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 General Description of the MC68HC11A8 . . . . . . . . . . . . . . . . 28 Programmer’s Model . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 29 Product Derivatives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Section 2. Pins and Connections
2.1 2.2 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2.3 Packages and Pin Names . . . . . . . . . . . . . . ....
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