STC12LE5604 datasheet(4/377 Pages) STC

4 / 377 page

STC

MCU

Limited

6.4 How Interrupts Are Handled .............................................................. 140

6.5 External Interrupts............................................................................. 141

6.6 Response Time .................................................................................. 145

6.7 Demo Programs about Interrupts (C and ASM)................................. 146

6.7.1 External Interrupt 0 (INT0 ) Demo Programs (C and ASM) ............................ 146

6.7.2 External Interrupt 1 (INT1 ) Demo Programs (C and ASM) ............................ 150

6.7.3 Programs of P3.4/T0 Interrupt(falling edge) used to wake up PD mode .......... 154

6.7.4 Programs of P3.5/T1 Interrupt(falling edge) used to wake up PD mode .......... 156

6.7.5 Program of P3.0/RxD Interrupt(falling edge) used to wake up PD mode......... 158

6.7.6 Program of PCA Interrupt used to wake up Power Down mode....................... 161

Chapter 7. Timer/Counter 0/1 ..................................................165

7.1 Special Function Registers about Timer/Counter............................... 165

7.2 Timer/Counter 0 Mode of Operation (Compatible with traditional 8051 MCU) ......... 169

7.2.1 Mode 0 (13-bit Timer/Counter) ...................................................................................... 169

7.2.2 Mode 1 (16-bit Timer/Counter) and Demo Programs (C and ASM).............................. 170

7.2.3 Mode 2 (8-bit Auto-Reload Mode) and Demo Programs (C and ASM)......................... 174

7.2.4 Mode 3 (Two 8-bit Timers/Couters) ............................................................................... 177

7.3 Timer/Counter 1 Mode of Operation.................................................. 178

7.3.1 Mode 0 (13-bit Timer/Counter) ...................................................................................... 178

7.3.2 Mode 1 (16-bit Timer/Counter) and Demo Programs (C and ASM).............................. 179

7.3.3 Mode 2 (8-bit Auto-Reload Mode) and Demo Programs (C and ASM)......................... 183

7.4 Programmable Clock Output and Demo Programs (C and ASM) ..... 186

7.4.1 Timer 0 Programmable Clock-out on P1.0 and Demo Program........................ 188

7.4.2 Timer 1 Programmable Clock-out on P1.1 and Demo Program........................ 191

7.5 Application note for Timer in practice ............................................... 194

Chapter 8. UART with Enhanced Function ............................195

8.1 Special Function Registers about UART............................................ 195

8.2 UART1 Operation Modes .................................................................. 200

8.2.1 Mode 0: 8-Bit Shift Register.............................................................................. 200

8.2.2 Mode 1: 8-Bit UART with Variable Baud Rate................................................. 202

8.2.3 Mode 2: 9-Bit UART with Fixed Baud Rate ..................................................... 204

8.2.4 Mode 3: 9-Bit UART with Variable Baud Rate................................................. 206

8.3 Frame Error Detection........................................................................ 208

8.4 Multiprocessor Communications ....................................................... 208

8.5 Automatic Address Recognition......................................................... 209

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