
Preliminary W79E217A DATA SHEET
8-bit Microcontroller
Publication Release Date: December 14, 2007
- 1 -
Revision A3.0
Table of Contents-
1.
2.
3.
GENERAL DESCRIPTION ......................................................................................................... 5
FEATURES................................................................................................................................. 6
PARTS INFORMATION LIST ..................................................................................................... 7
3.1
Lead Free (RoHS) Parts information list......................................................................... 7
PIN CONFIGURATION............................................................................................................... 7
PIN DESCRIPTION..................................................................................................................... 8
5.1
Port 4 ............................................................................................................................ 11
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
SPECIAL FUNCTION REGISTERS ......................................................................................... 18
INSTRUCTION SET.................................................................................................................. 72
8.1
Instruction Timing.......................................................................................................... 80
8.1.1
External Data Memory Access Timing............................................................................82
POWER MANAGEMENT.......................................................................................................... 85
9.1
Idle Mode...................................................................................................................... 85
9.2
Power Down Mode ....................................................................................................... 85
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
INTERRUPTS ........................................................................................................................... 89
11.1
Interrupt Sources .......................................................................................................... 89
11.2
Priority Level Structure ................................................................................................. 90
11.2.1
Response Time ............................................................................................................93
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
4.
5.
6.
7.
8.
9.
10.
11.
12.