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SH79F1616P/032PR Datasheet(PDF) 49 Page - SINOWEALTH Electronic Ltd |
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SH79F1616P/032PR Datasheet(HTML) 49 Page - SINOWEALTH Electronic Ltd |
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49 / 102 page  SH79F1616 49 7.9.9 External Interrupt Inputs The SH79F1616 has 3 external interrupt inputs. External interrupt 2-3 each has one vector address. External interrupt 4 has 4 inputs; all of them share one vector address. In this mode, a cycle INTx (x = 2, 3) pin continuous sampling is high while the next cycle is low, the interrupt request flag, an interrupt request. Since the external interrupt pin every machine cycle sampling time, input high or low should be kept for at least one machine cycle to ensure proper sampling. If the external interrupt triggered low external interrupt source must hold the request active until the requested interrupt far, this process requires two system clock cycles. If the interrupt service is completed, the external interrupt still maintain, an interrupt will be generated. Should not be removed when the interrupt is level-triggered interrupt flag IEx (x = 2, 3), interrupted only related to the level of the input port. When SH79F1616 entering idle or power-down mode, the interrupt will wake up the processor to continue to work, see the Power Management chapter. Note: External interrupt 2-3 in the execution of an interrupt service routine interrupt flag is automatically cleared by hardware, but the external interrupt flag IF40-43 must be cleared by software. 1 Machine Cyle >1 Machine Cycle High-Level Threshold Low-Level Threshold Low-Level Threshold >2 Machine Cycle 7.9.10 Interrupt Summary Source Vector Address Enable bits Flag bits Polling Priority Interrupt number (c language) Reset 0000H - - 0 (highest) - Timer5 000BH ET5 TF5 1 1 EUART 0023H ES RI+TI 2 4 Timer2 002BH ET2 TF2 3 5 ADC 0033H EADC ADCIF 4 6 INT2 0043H EX2 IE2 5 8 INT3 004BH EX3 IE3 6 9 INT4 0053H EX4+IENC IF43-40 7 10 Timer3 005BH ET3 TF3 8 11 PWM 0063H EPWM PWMIF 9 12 Timer4 006BH ET4 TF4 10 13 SCM/LPD 0073H ESCM+ESCM1/ELPD SCMIF/LPDF 11 (lowest) 14 |
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