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T84C5112-RKREV Fiches technique(PDF) 66 Page - ATMEL Corporation

No de pièce T84C5112-RKREV
Description  8-bit Microcontroller with A/D converter
PDF  97 Pages
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Fabricant  ATMEL [ATMEL Corporation]
Site Internet  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

T84C5112-RKREV Fiches technique(HTML) 66 Page - ATMEL Corporation

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Rev. B - November 10, 2000
Preliminary
T80C5112
A low-priority interrupt can be interrupted by a high priority interrupt, but not by another low-priority interrupt.
A high-priority interrupt canÕt be interrupted by any other interrupt source.
If two interrupt requests of different priority levels are received simultaneously, the request of higher priority level
is serviced. If interrupt requests of the same priority level are received simultaneously, an internal polling sequence
determines which request is serviced. Thus within each priority level there is a second priority structure determined
by the polling sequence.
Table 40. Priority bit level values
IPH.x
IP.x
Interrupt Level Priority
0
0
0 (Lowest)
0
1
1
1
0
2
1
1
3 (Highest)
Table 41. Address vectors
Interrupt Name
Interrupt Address
Vector
Priority Number
external interrupt (INT0)
0003h
1
Timer0 (TF0)
000Bh
2
external interrupt (INT1)
0013h
3
Timer1 (TF1)
001Bh
4
PCA (CF or CCFn)
0033h
5
UART (RI or TI)
0023h
6
SPI
004Bh
8
ADC
0043h
9



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