ST7FOXK1 STMicroelectronics, ST7FOXK1 Datasheet - Page 52

• 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

Interrupts
Table 13.
Figure 18. Interrupt processing flowchart
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Interrupt software priority levels
RESTORE PC, X, A, CC
Interrupt software priority
Level 3 (= interrupt disable)
FROM STACK
RESET
Level 0 (main)
Level 1
Level 2
Y
INSTRUCTION
INTERRUPT
INSTRUCTION
FETCH NEXT
PENDING
EXECUTE
N
“IRET”
N
Y
STAYS PENDING
THE INTERRUPT
Level
High
Low
Interrupt has the same or a
LOAD I1:0 FROM INTERRUPT SW REG.
LOAD PC FROM INTERRUPT VECTOR
ST7FOXF1, ST7FOXK1, ST7FOXK2
lower software priority
than current one
STACK PC, X, A, CC
I1
1
0
1
I1:0
TLI
N
I0
0
1
0
1
Y