W79E548 Datasheet, PDF (1/79 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E548/W79L548 Data Sheet
8-BIT MICROCONTROLLER
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
Publication Release Date: December 12, 2005
-1-
Revision A1