ST7FOXK1 STMicroelectronics, ST7FOXK1 Datasheet - Page 55

• Manufacturer Part Number: ST7FOXK1
• Description: Low cost flash 8bit micro
• Manufacturer: STMicroelectronics

Specifications of ST7FOXK1

• 4 To 8 Kbytes Single Voltage Extended Flash (xflash) Program Memory With Read-out Protection In-circuit Programming And In-application Programming (icp And Iap) Endurance: 1K write/erase cycles guaranteed Data retention
• Clock Sources: Internal trimmable 8 MHz RC oscillator, auto wakeup internal low power - low frequency oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Auto Wakeup from Halt, Wait and Slow
• A/d Converter: up to 10 input channels

ST7FOXF1, ST7FOXK1, ST7FOXK2
7.4
Caution:
Concurrent and nested management
The following
first is called concurrent mode and does not allow an interrupt to be interrupted, unlike the
nested mode in
lowest to the highest: MAIN, IT5, IT4, IT3, IT2, IT1, IT0. The software priority is given for
each interrupt.
A stack overflow may occur without notifying the software of the failure.
Figure 20. Concurrent interrupt management
Figure 21. Nested interrupt management
11 / 10
MAIN
11 / 10
RIM
MAIN
RIM
Figure 20
Figure
IT2
IT3
21. The interrupt hardware priority is given in this order from the
IT1
and
IT2
Figure 21
IT4
IT0
TLI
IT2
show two different interrupt management modes. The
IT4
IT1
IT0
IT4
IT3
IT1
IT5
IT2
10
SOFTWARE
PRIORITY
LEVEL
10
SOFTWARE
PRIORITY
LEVEL
MAIN
MAIN
3
3
3
3
3
3
3/0
3
3
2
1
3
3
3/0
I1
I1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
0 0
0 1
1 1
1 1
Interrupts
I0
55/226
I0