Intel MCS 51

CONTENTS
PAGE
12.0 INTERRUPTS................................... 6-41
12.1 ExternalInterrupts....................... 6-41
12.2 Timer Interrupts............................ 6-43
12.3 PCA Interrupt............................... 643
12.4 SerialPortInterrupt..................... 643
12.5 InterruptEnable........................... 643
12.6 InterruptPriorities........................ 6-45
12.7 InterruptProcessing..................... 6-47
12.8 InterruptResponseTime ............. 6-48
13.0 RESET.............................................. 6-49
13.1 Power-OnReset.......................... 6-49
CONTENTS
PAGE
14.0 POWER-SAVINGMODES ...............6-49
14.1 IdleMode..................................... 6-51
14.2 PowerDownMode ...................... 6-51
14.3 PowerOff Flag............................. 6-51
15.0 EPROM/OTPPROGRAMMING ....... 6-52
15.1 ProgramMemoryLock................ 6-52
ProgramLockBits............................ 6-52
16.0 ONCE MODE
................................... 6-52
17.0 ON-CHIP OSCILLATOR..,................ 6-52
18.0 CPU TIMING .................................... 6-54
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