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SH79F3283P/044PR Datasheet(PDF) 57 Page - SINOWEALTH Electronic Ltd |
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SH79F3283P/044PR Datasheet(HTML) 57 Page - SINOWEALTH Electronic Ltd |
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57 / 144 page  SH79F3283 57 7.9 Interrupt 7.9.1 Feature 15 interrupt sources 4 interrupt priority levels The SH79F3283 provides total 15 interrupt sources: 5 external interrupts (INT0, INT1, INT2, INT3, INT4), INT4 has 8 interrupt sources (INT40-47, which share the same vector address), 4 timer interrupts (Timer2, 3, 4, 5), two EUART interrupt, SPI interrupt, ADC Interrupt, PWM interrupts, SCM interrupt and LPD interrupt. 7.9.2 Interrupt Enable Control Each interrupt source can be individually enabled or disabled by setting or clearing the corresponding bit in the interrupt enable registers IEN0 or IEN1. The IEN0 register also contains global interrupt enable bit, EA, which can enable/disable all the interrupts at once. Generally, after reset, all interrupt enable bits are set to 0, which means that all the interrupts are disabled. 7.9.3 Register Table 7.39 Primary Interrupt Enable Register A8H Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 IEN0 EA EADC ET2 ES0 - EX1 ET5 EX0 R/W R/W R/W R/W R/W - R/W R/W R/W Reset Value (POR/WDT/LVR/PIN) 0 0 0 0 - 0 0 0 Bit Number Bit Mnemonic Description 7 EA All interrupt enable bit 0: Disable all interrupt 1: Enable all interrupt 6 EADC ADC interrupt enable bit 0: Disable ADC interrupt 1: Enable ADC interrupt 5 ET2 Timer2 overflow interrupt enable bit 0: Disable Timer2 overflow interrupt 1: Enable Timer2 overflow interrupt 4 ES0 EUART0 interrupt enable bit 0: Disable EUART0 interrupt 1: Enable EUART0 interrupt 2 EX1 External interrupt1 enable bit 0: Disable external interrupt1 1: Enable external interrupt1 1 ET5 Timer5 overflow interrupt enable bit 0: Disable Timer5 overflow interrupt 1: Enable Timer5 overflow interrupt 0 EX0 External interrupt0 enable bit 0: Disable external interrupt0 1: Enable external interrupt0 |
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