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AT83C5111 Arkusz danych(PDF) 60 Page - ATMEL Corporation

Numer części AT83C5111
Szczegółowy opis  Low Pin Count 8-bit Microcontroller with A/D Converter
PDF  86 Pages
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Producent  ATMEL [ATMEL Corporation]
Strona internetowa  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT83C5111 Arkusz danych(HTML) 60 Page - ATMEL Corporation

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AT8xC5111
4190A–8051–11/02
Interrupt System
The AT8xC5111 has a total of 8 interrupt vectors: two external interrupts (INT0 and
INT1), two timer interrupts (timers 0, 1), serial port interrupt, PCA, SPI and A/D. These
interrupts are shown in Figure 29.
Figure 1. Interrupt Control System
Each of the interrupt sources can be individually enabled or disabled by setting or clear-
ing a bit in the Interrupt Enable register (See Table 49). This register also contains a
global disable bit, which must be cleared to disable all interrupts at once.
Each interrupt source can also be individually programmed to one of four priority levels
by setting or clearing a bit in the Interrupt Priority register (See Table 51) and in the
Interrupt Priority High register (see Table 53). Table 47 shows the bit values and priority
levels associated with each combination.
IE1
0
3
High Priority
Interrupt
Interrupt
Polling
Sequence
Low Priority
Interrupt
Global
Disable
Individual
Enable
TI
RI
TF0
INT0
INT1
TF1
IPH, IP
IE0
0
3
0
3
0
3
0
3
0
3
NC
SPI
0
3
ADC
0
3
0
3
CF
CCFx
PCA



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