AT89C5131-PLTIL ATMEL Corporation, AT89C5131-PLTIL Datasheet - Page 75
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AT89C5131-PLTIL
Manufacturer Part Number
AT89C5131-PLTIL
Description
8-bit Flash Microcontroller with Full Speed USB Device
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C5131-PLTIL.pdf
(176 pages)
- Current page: 75 of 176
- Download datasheet (3Mb)
Interrupt System
Overview
Figure 36. Interrupt Control System
4136B–USB–09/03
USBINT
UEPINT
EXF2
KBD IT
SPI IT
INT0
INT1
PCA IT
TF0
TF1
TF2
RI
TI
Individual Enable
The AT89C5131 has a total of 15 interrupt vectors: two external interrupts (INT0 and
INT1), three timer interrupts (timers 0, 1 and 2), the serial port interrupt, SPI interrupt,
Keyboard interrupt, USB interrupt and the PCA global interrupt. These interrupts are
shown in Figure 36.
IE0
IE1
IPH, IPL
Global Disable
3
0
3
0
3
0
3
0
3
0
3
0
3
0
3
0
3
0
3
0
3
0
High priority
interrupt
Interrupt
Polling
Sequence, Decreasing From
High-to-Low Priority
Low Priority
Interrupt
AT89C5131
75
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