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M38045F2HKP Fiches technique(PDF) 143 Page - Renesas Technology Corp

No de pièce M38045F2HKP
Description  8-BIT CISC SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
PDF  387 Pages
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Fabricant  RENESAS [Renesas Technology Corp]
Site Internet  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M38045F2HKP Fiches technique(HTML) 143 Page - Renesas Technology Corp

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2-19
APPLICATION
2.2 Interrupt
Rev.1.00 Jan 14, 2005
REJ09B0212-0100Z
3804 Group (Spec.H)
2.2.6 INT interrupt
The INT interrupt requests is generated when the microcomputer detects a level change of each INT pin
(INT0–INT4).
(1)
Active edge selection
INT0–INT4 can be selected from either a falling edge or rising edge detection as an active edge by
the interrupt edge selection register. In the “0” state, the falling edge of the corresponding pin is
detected. In the “1” state, the rising edge of the corresponding pin is detected.
(2)
INT0, INT2, INT4 interrupt source selection
When using the following interrupt source, select which of the interrupt source by the interrupt source
selection register (address 003916). (Set these bits to “0” when using INT.)
•INT0 or timer Z (bit 0)
•INT4 or CNTR2 (bit 4)
•INT2 or I2C (bit 5)



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