Rainbow-electronics T89C5115 Instrukcja Użytkownika Pobierz pdf (Strona 52)

T89C5115

4128A–8051–04/02

Interrupt Each Timer handles one interrupt source that is the timer overflow flag TF0 or TF1. This

flag is set every time an overflow occurs. Flags are cleared when vectoring to the Timer

interrupt routine. Interrupts are enabled by setting

ETx bit in IEN0 register. This assumes

interrupts are globally enabled by setting EA bit in IEN0 register.

Figure 26. Timer Interrupt System

TF0

TCON.5

ET0

IEN0.1

Timer 0

Interrupt Request

TF1

TCON.7

ET1

IEN0.3

Timer 1

Interrupt Request

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 104 105

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Rainbow-electronics T89C5115 Instrukcja Użytkownika Strona 52