psd511b1 STMicroelectronics, psd511b1 Datasheet - Page 105

• Manufacturer Part Number: psd511b1
• Description: Low Cost Field Programmable Microcontroller Peripherals
• Manufacturer: STMicroelectronics

Interrupt
Controller
(Cont.)
102
PSD5XX Family
Figure 48. Interrupt Flowchart
INITIALIZATION
CLEAR ALL
PENDING BITS
(READ CLEAR
REGISTER
DEFINE EDGE
OR LEVEL
SENSITIVE
CONFIGURE
INTERRUPT
SOURCE PLD
AND / OR
TIMER COUNT
i.e. UNMASK
REQD INTRPT
INTERRUPT
NO
KEEP LOW
PRIORITY
INTERRUPTS
PENDING
SERVICE
HIGH PRIORITY
INTERRUPT
INTERRUPTS
SERVICED ?
INTERRUPT
OCCURRED ?
DETERMINE
PRIORITY
OF THE
INTERRUPT
ARE
ALL
YES
UNTIL INTERRUPT
NO
YES
EXECUTING
MAIN LOOP
CONTINUE
OCCURS