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W79E548 Datasheet(PDF) 1 Page - Winbond |
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W79E548 Datasheet(HTML) 1 Page - Winbond |
1 / 79 page W79E548/W79L548 Data Sheet 8-BIT MICROCONTROLLER Publication Release Date: December 12, 2005 - 1 - Revision A1 Table of Contents- 1. GENERAL DESCRIPTION ......................................................................................................... 3 2. FEATURES ................................................................................................................................. 3 3. PIN CONFIGURATIONS ............................................................................................................ 4 4. PIN DESCRIPTION..................................................................................................................... 5 5. BLOCK DIAGRAM ...................................................................................................................... 7 6. FUNCTIONAL DESCRIPTION ................................................................................................... 8 7. MEMORY ORGANIZATION ....................................................................................................... 9 8. INSTRUCTION.......................................................................................................................... 28 8.1 Instruction Timing ......................................................................................................... 29 8.1.1 External Data Memory Access Timing............................................................................32 9. POWER MANAGEMENT.......................................................................................................... 34 10. INTERRUPTS ........................................................................................................................... 38 11. PROGRAMMABLE TIMERS/COUNTERS ............................................................................... 40 11.1 Timer/Counters 0 & 1.................................................................................................... 40 11.2 Timer/Counter 2 ............................................................................................................ 43 11.3 Pulse Width Modulated Outputs (PWM)....................................................................... 47 11.4 Watchdog Timer ........................................................................................................... 50 12. SERIAL PORT .......................................................................................................................... 54 12.1 Framing Error Detection ............................................................................................... 59 12.2 Multiprocessor Communications .................................................................................. 59 13. TIMED ACCESS PROTECTION .............................................................................................. 60 14. H/W REBOOT MODE (BOOT FROM 4K BYTES OF LDFLASH) ............................................ 62 15. IN-SYSTEM PROGRAMMING ................................................................................................. 63 15.1 The Loader Program Locates at LDFlash Memory ...................................................... 63 15.2 The Loader Program Locates at APFlash Memory ...................................................... 63 16. H/W WRITER MODE ................................................................................................................ 63 17. SECURITY BITS ....................................................................................................................... 64 18. ELECTRICAL CHARACTERISTICS......................................................................................... 65 18.1 Absolute Maximum Ratings .......................................................................................... 65 18.2 DC Characteristics........................................................................................................ 65 18.3 A.C. Characteristics ...................................................................................................... 67 |
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