Datasheet

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ST7LITE20F2 ST7LITE25F2 ST7LITE29F2 Interrupts
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Table 12. Interrupt mapping
No.
Source
block
Description
Register
label
Priority
order
Exit from
HALT or
AWUF
Exit
from
ACTIVE-
HALT
Address
vector
RESET Reset
N/A
Highest
priority
Lowest
priority
yes yes FFFEh-FFFFh
TRAP Software interrupt no
no
FFFCh-FFFDh
0 AWU Auto-wakeup interrupt AWUCSR yes
(1)
FFFAh-FFFBh
1 ei0 External interrupt 0
N/A yes
FFF8h-FFF9h
2 ei1 External interrupt 1 FFF6h-FFF7h
3 ei2 External interrupt 2 FFF4h-FFF5h
4 ei3 External interrupt 3 FFF2h-FFF3h
5 Lite timer LITE TIMER RTC2 interrupt LTCSR2 no FFF0h-FFF1h
6 Not used FFEEh-FFEFh
7 SI AVD interrupt SICSR
no
no
FFECh-FFEDh
8
AT timer
AT TIMER output compare
interrupt or input capture
interrupt
PWMxCSR
or ATCSR
FFEAh-FFEBh
9 AT TIMER overflow interrupt ATCSR yes FFE8h-FFE9h
10
Lite timer
LITE TIMER input capture
interrupt
LTCSR no FFE6h-FFE7h
11 LITE TIMER RTC1 interrupt LTCSR yes FFE4h-FFE5h
12 SPI SPI peripheral interrupts SPICSR yes no FFE2h-FFE3h
13 Not used FFE0h-FFE1h
1. This interrupt exits the MCU from “Auto-wakeup from HALT” mode only.