W79E648 Datasheet, PDF (1/80 Pages) Winbond – Fast 8051 Compatible microcontroller with a redesigned Processor

Preliminary W79E648 Data Sheet
8-BIT MICROCONTROLLER
Table of Contents-
1. GENERAL DESCRIPTION .................................................................................................................... 2
2. FEATURES............................................................................................................................................ 2
3. PIN CONFIGURATION.......................................................................................................................... 3
4. PIN DESCRIPTION ............................................................................................................................... 4
5. BLOCK DIAGRAM ................................................................................................................................. 6
6. FUNCTIONAL DESCRIPTION .............................................................................................................. 7
7. MEMORY ORGANIZATION .................................................................................................................. 8
8. INSTRUCTION .................................................................................................................................... 28
8.1 Instruction Timing .......................................................................................................... 28
9. POWER MANAGEMENT..................................................................................................................... 34
10. INTERRUPTS...................................................................................................................................... 37
11. PROGRAMMABLE TIMERS/COUNTERS .......................................................................................... 39
11.1 Timer/Counters 0 & 1..................................................................................................... 39
11.2 Timer/Counter 2 ............................................................................................................. 42
11.3 Watchdog Timer ............................................................................................................ 45
12. SERIAL PORT ..................................................................................................................................... 52
12.1 Framing Error Detection ................................................................................................ 58
12.2 Multiprocessor Communications ................................................................................... 58
13. TIMED ACCESS PROTECTION ......................................................................................................... 59
14. H/W REBOOT MODE (BOOT FROM 4K BYTES OF LDFLASH) ....................................................... 61
15. IN-SYSTEM PROGRAMMING ............................................................................................................ 62
15.1 The Loader Program Locates at LDFlash Memory ....................................................... 62
15.2 The Loader Program Locates at APFlash Memory ....................................................... 62
16. H/W WRITER MODE........................................................................................................................... 62
17. SECURITY BITS.................................................................................................................................. 63
18. ELECTRICAL CHARACTERISTICS.................................................................................................... 65
18.1 Absolute Maximum Ratings ........................................................................................... 65
18.2 DC Characteristics......................................................................................................... 66
18.3 AC Characteristics ......................................................................................................... 67
19. TYPICAL APPLICATION CIRCUITS ................................................................................................... 72
20. PACKAGE DIMENSIONS.................................................................................................................... 73
21. APPLICATION NOTE .......................................................................................................................... 75
22. REVISION HISTORY........................................................................................................................... 80
Publication Release Date: 05/31/2004
-1-
Revision A1