W79E648 Datasheet PDF - Winbond
| Part Number | W79E648 | |
| Description | 8-BIT MICROCONTROLLER | |
| Manufacturers | Winbond | |
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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
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Preliminary W79E648
Pin Description, continued
SYMBOL
TYPE
DESCRIPTIONS
PORT 3: Port 3 is a bi-directional I/O port with internal pull-ups. All bits have
alternate functions, which are described below:
RXD(P3.0) : Serial Port 0 input
TXD(P3.1) : Serial Port 0 output
INT0 (P3.2) : External Interrupt 0
P3.0 − P3.7 I/O INT1(P3.3) : External Interrupt 1
T0(P3.4) : Timer 0 External Input
T1(P3.5) : Timer 1 External Input
WR (P3.6) : External Data Memory Write Strobe
RD (P3.7) : External Data Memory Read Strobe
PORT 4: Port 4 is a 4-bit bi-directional I/O port. The P4.3 also provide the
P4.0 − P4.3 I/O
alternate function REBOOT which is H/W reboot from LD flash.
P5.0 – P5.7 I/O PORT 5: Port 5 is a bi-directional I/O port with internal pull-ups.
P6.0 – P6.7 I/O PORT6: Port 6 is a bi-directional I/O port with internal pull-ups.
P7.0 – P7.7 I/O PORT 7: Port 7 is a bi-directional I/O port with internal pull-ups.
* Note: TYPE I : input, O: output, I/O: bi-directional.
Publication Release Date: 05/31/2004
- 5 - Revision A1
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for W79E648 electronic component. |
| Information | Total 70 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ W79E648.PDF Datasheet ] | |
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