Document
PRELIMINARY W79E633A/W79L633A DATA SHEET
8-BIT MICROCONTROLLER
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 4 2. FEATURES ................................................................................................................................. 4 3. PIN CONFIGURATION ............................................................................................................... 5 4. PIN DESCRIPTION..................................................................................................................... 6
4.1 Port 4 .............................................................................................................................. 7 5. MEMORY ORGANIZATION........................................................................................................ 9
5.1 Program Memory (on-chip Flash) ................................................................................... 9 5.2 Data Memory ................................................................................................................ 10 6. SPECIAL FUNCTION REGISTERS ......................................................................................... 11 7. INSTRUCTION SET.................................................................................................................. 41 7.1 Instruction Timing.......................................................................................................... 49
7.1.1 External Data Memory Access Timing.............................................................. 51 8. POWER MANAGEMENT.......................................................................................................... 54
8.1 Idle Mode ...................................................................................................................... 54 8.2 Power Down Mode ....................................................................................................... 54 9. RESET CONDITIONS............................................................................................................... 55 9.1 Reset Conditions........................................................................................................... 55 9.2 External Reset .............................................................................................................. 55 9.3 Power-On Reset (POR) ................................................................................................ 55 9.4 Watchdog Timer Reset ................................................................................................. 55 9.5 Reset State ................................................................................................................... 55 10. INTERRUPTS ........................................................................................................................... 57 10.1 Interrupt Sources ...........