W79E217A Datasheet, PDF (1/207 Pages) Winbond – 8-bit Microcontroller

Preliminary W79E217A DATA SHEET
8-bit Microcontroller
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 5
2. FEATURES ................................................................................................................................. 6
3. PARTS INFORMATION LIST ..................................................................................................... 7
3.1 Lead Free (RoHS) Parts information list......................................................................... 7
4. PIN CONFIGURATION ............................................................................................................... 7
5. PIN DESCRIPTION..................................................................................................................... 8
5.1 Port 4 ............................................................................................................................ 11
6. MEMORY ORGANIZATION...................................................................................................... 12
6.1 Program Memory (on-chip Flash) ................................................................................. 12
6.2 Data Memory ................................................................................................................ 12
6.3 Auxiliary SRAM ............................................................................................................. 13
6.4 2-KB NVM Data Flash Memory .................................................................................... 13
6.4.1 Operation........................................................................................................................16
7. SPECIAL FUNCTION REGISTERS ......................................................................................... 18
8. INSTRUCTION SET.................................................................................................................. 72
8.1 Instruction Timing.......................................................................................................... 80
8.1.1 External Data Memory Access Timing............................................................................82
9. POWER MANAGEMENT.......................................................................................................... 85
9.1 Idle Mode ...................................................................................................................... 85
9.2 Power Down Mode ....................................................................................................... 85
10. RESET CONDITIONS............................................................................................................... 87
10.1 Sources of reset............................................................................................................ 87
10.1.1 External Reset ..............................................................................................................87
10.1.2 Power-On Reset (POR)................................................................................................87
10.1.3 Watchdog Timer Reset.................................................................................................87
10.2 Reset State ................................................................................................................... 88
11. INTERRUPTS ........................................................................................................................... 89
11.1 Interrupt Sources .......................................................................................................... 89
11.2 Priority Level Structure ................................................................................................. 90
11.2.1 Response Time ............................................................................................................93
12. PROGRAMMABLE TIMERS/COUNTERS ............................................................................... 94
12.1 Timer/Counters 0 & 1.................................................................................................... 94
12.1.1 Time-Base Selection ....................................................................................................94
12.1.2 Mode 0 .........................................................................................................................94
12.1.3 Mode 1 .........................................................................................................................95
12.1.4 Mode 2 .........................................................................................................................95
12.1.5 Mode 3 .........................................................................................................................96
Publication Release Date: December 14, 2007
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Revision A3.0