STC89LE53RC datasheet(3/165 Pages) STC

3 / 165 page

Chapter 6 Interrupt ......................................................................... 78

6.1 Interrupt Structure............................................................................ 79

6.2 Interrupt Register .............................................................................. 80

6.3 Interrupt Priorities ............................................................................ 84

6.4 How Interrupts Are Handled............................................................ 84

6.5 External Interrupts........................................................................... 85

6.6 Response Time................................................................................... 88

Chapter 7 Timer/Counter................................................................ 89

7.1 Timer/Counter 0 Mode of Operation...............................................92

7.2 Timer/Counter 1 Mode of Operation............................................... 95

7.3 Timer/Counter 2 Mode of Operation............................................. 100

Chapter 8 UART with enhanced function ................................... 109

8.1 UART Mode of Operation............................................................... 112

8.2 Frame Error Detection .................................................................... 118

8.3 Multiprocessor Communications.................................................... 118

8.4 Automatic Address Recognition...................................................... 120

8.5 Buad Rates........................................................................................ 122

Chapter 9 IAP / EEPROM ............................................................ 123

9.1 IAP / ISP Control Register .............................................................. 123

9.2 STC89xx series internal EEPROM Selection Table ..................... 125

9.3 IAP/EEPROM Assembly Language Program Introduction........ 126

9.4 Operating internal EEPROM Demo by Assembly Language ..... 128

Appendix A: Assembly Language Programming........................ 132

Appendix B: 8051 C Programming .............................................. 154

Appendix C: STC89xx series Selection Table.............................. 164

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