STEVAL-IFS012V1 STMicroelectronics, STEVAL-IFS012V1 Datasheet - Page 39

• Manufacturer Part Number: STEVAL-IFS012V1
• Description: BOARD ST72651AR6/STTS75/STLM20
• Manufacturer: STMicroelectronics

Specifications of STEVAL-IFS012V1

• Sensor Type: Temperature
• Sensing Range: Depends on IC
• Interface: I²C, USB
• Sensitivity: Depends on IC
• Voltage - Supply: 5V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ST72F651AR6, STTS75, STLM20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8419

INTERRUPTS (Cont’d)
7.3 INTERRUPTS AND LOW POWER MODES
All interrupts allow the processor to exit the WAIT
low power mode. On the contrary, only external
and other specified interrupts allow the processor
to exit from the HALT modes (see column “Exit
from HALT” in “Interrupt Mapping” table). When
several pending interrupts are present while exit-
ing HALT mode, the first one serviced can only be
an interrupt with exit from HALT mode capability
and it is selected through the same decision proc-
ess shown in
Note: If an interrupt, that is not able to Exit from
HALT mode, is pending with the highest priority
when exiting HALT mode, this interrupt is serviced
after the first one serviced.
Figure 27. Concurrent Interrupt Management
Figure 28. Nested Interrupt Management
11 / 10
11 / 10
MAIN
MAIN
Figure
RIM
RIM
26.
IT2
IT2
IT1
IT1
IT4
TLI
TLI
Doc ID 7215 Rev 4
IT1
IT4
IT0
IT0
7.4 CONCURRENT & NESTED MANAGEMENT
The following
different interrupt management modes. The first is
called concurrent mode and does not allow an in-
terrupt to be interrupted, unlike the nested mode in
Figure
in this order from the lowest to the highest: MAIN,
IT4, IT3, IT2, IT1, IT0, TLI. The software priority is
given for each interrupt.
Warning: A stack overflow may occur without no-
tifying the software of the failure.
IT3
IT3
IT1
28. The interrupt hardware priority is given
IT4
IT2
Figure 27
10
10
SOFTWARE
PRIORITY
LEVEL
SOFTWARE
PRIORITY
LEVEL
MAIN
MAIN
and
3
3
3
3
3
3
3/0
3
3
2
1
3
3
3/0
Figure 28
I1
I1
ST72651AR6
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
0 0
0 1
1 1
1 1
show two
I0
I0
39/161
1