EM6621
The prescaler contains 3 interrupt sources:
- IRQ32/8 ; this is Ck[6] or Ck[4] positive edge interrupt,
the selection is depending on bit
PrIntSel.
- IRQHz1 ; this is Ck[1] positive edge interrupt
- IRQBlink ; this is 3/4 of Ck[1] period interrupt
There is no interrupt generation on reset.
The first IRQHz1 Interrupt occurs 1 sec (32kHz)
after reset.
A possible application for the IRQBlink is LCD-Display
blinking control together with IRQHz1.
Figure 9. Prescaler Interrupts
Ck[2]
Ck[1]
IRQ
Hz1
IRQBlink
©
EM Microelectronic-Marin SA, 03/99, Rev. B/
03/02 REV. D/444
Copyright
2002, EM Microelectronic-Marin SA
12
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