KS57C2308/P2308/C2316/P2316
INTERRUPTS
7-3
Jump to interrupt start address
Verify interrupt source and clear
IRQx with a BTSTZ instruction
IEx = 1 ?
Interrupt is generated. ( INT xx)
Generates the corresponding vector
interrupt and releases power down
High priority interrupt ?
IME = 1 ?
IS1,0 = 0, 0 ?
IS1,0 = 0, 1 ?
Stores the contents of PC and PSW in stack area;
set PC contents to corresponding vector address.
IS1,0 = 0,1
Retains until interrupt service
routine is completed.
IS1,0 = 1,0
NO
NO
NO
NO
YES
YES
YES
YES
YES
NO
Reset corresponding IRQx flag
Are both interrupt sources
of shared vector address used?
IRQx flag value remains 1
Jump to interrupt start address
YES
NO
Retains value until IME =1
Retains value until IEx =1
Request flag (IRQx) <-- 1
Figure 7-1. Interrupt Execution Flowchart
Summary of Contents for KS57C2308
Page 30: ...ADDRESS SPACES KS57C2308 P2308 C2316 P2316 2 22 NOTES ...
Page 168: ...SAM47 INSTRUCTION SET KS57C2308 P2308 C2316 P2316 5 94 NOTES ...
Page 170: ......
Page 206: ...POWER DOWN KS57C2308 P2308 C2316 P2316 8 8 NOTES ...
Page 210: ...RESET KS57C2308 P2308 C2316 P2316 9 4 NOTES ...
Page 222: ...I O PORTS KS57C2308 P2308 C2316 P2316 10 12 NOTES ...
Page 272: ...LCD CONTROLLER DRIVER KS57C2308 P2308 C2316 P2316 12 24 NOTES ...
Page 280: ...SERIAL I O INTERFACE KS57C2308 P2308 C2316 P2316 13 8 NOTES ...
Page 294: ...MECHANICAL DATA KS57C2308 P2308 C2316 P2316 15 2 NOTES ...
Page 310: ...KS57P2308 P2316 OTP KS57C2308 P2308 C2316 P2316 16 16 NOTES ...
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