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Order this document by MC68HC812A4/D Rev. 3.0

MC68HC812A4
Advance Information

This document contains information on a new product. Specifications and information herein are subject to change without notice.

N O N - D I S C L O S U R E

A G R E E M E N T

HC12

R E Q U I R E D

Advance Information R E Q U I R E D A G R E E M E N T

N O N - D I S C L O S U R E

Motorolareserves the right to make changes without further notice to any products herein to improve reliability, function or design. Motorola does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use ascomponents in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and holdMotorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.©Motorola, Inc., 1999 Advance Information 2 MC68HC812A4 — Rev. 3.0 MOTOROLA

Advance Information — MC68HC812A4

List of Sections

Section 1. General Description . . . . . . . . . . . . . . . . . . . . 29 Section 2. Register Block . . . . . . . . . . . . . . . . . . . . . . . . 43 Section 3. Central Processor Unit (CPU12) . . . . . . . . . . 59 Section 4. Resets and Interrupts . . . . . .. . . . . . . . . . . . 69 Section 5. Operating Modes and Resource Mapping . . 79 Section 6. Bus Control and Input/Output (I/O) . . . . . . . . 93 Section 7. EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Section 8. Memory Expansion and Chip-Select . . . . . 121 Section 9. Key Wakeups . . . . . . . . . . . . . . . . . . . . . . . . 143 Section 10. Clock Module . . . . . . . . .. . . . . . . . . . . . . . 153 Section 11. Phase-Lock Loop (PLL) . . . . . . . . . . . . . . . 167 Section 12. Standard Timer Module . . . . . . . . . . . . . . . 175 Section 13. Multiple Serial Interface (MSI) . . . . . . . . . . 213 Section 14. Serial Communications Interface Module (SCI) . . . . . . . . . . . . . . . . . . . . . . 223 Section 15. Serial Peripheral Interface (SPI) . . . . . .. . 263 Section 16. Analog-to-Digital Converter (ATD) . . . . . . 285 Section 17. Development Support . . . . . . . . . . . . . . . . 305 Section 18. Electrical Characteristics . . . . . . . . . . . . . 321 Section 19. Mechanical Specifications . . . . . . . . . . . . 339

Advance Information MOTOROLA List of Sections

MC68HC812A4 — Rev. 3.0 3

List of Sections

MC68HC812A4 — Rev. 3.0 4List of Sections

Advance Information MOTOROLA

Advance Information — MC68HC812A4

Table of Contents

Section 1. General Description
1.1 1.2 1.3 1.4 1.5 1.6 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Features . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .30 Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Section 2. Register Block
2.1 2.2 2.3 2.4 Contents . . . . . . . . . . . ....
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