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ST52T301P Fiches technique(PDF) 67 Page - STMicroelectronics

No de pièce ST52T301P
Description  8-Bit OTP/EPROM DuaLogic] MCUs WITH ADC, UART, TIMER, TRIAC & PWM DRIVER
PDF  100 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST52T301P Fiches technique(HTML) 67 Page - STMicroelectronics

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IRQ
Interrupt Vector
Format:
IRQ int label
Operation:
interrupt vector <- label
(PC = Program Counter)
Description: This instruction allows to specify the interrupt int service routine start address at label lo-
cation.
Flags:
Z,S not affected.
Bytes:
2
Cycles:
6
Example:
The instruction:
IRQ 1 IntRout1
determinates that if interrupt 1 is serviced, the program counter (PC) is loaded with the
memory address value labelled with IntRout1.
Remark:
The instruction IRQ is a dummy instruction used to store data in the chip memory. It is
neither stored in memory nor executed.A series of IRQ instructions must be ended by a
dummy end operation.
67/99
ST52T301/E301



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