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ST62T28C データシート(PDF) 29 Page - STMicroelectronics |
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ST62T28C データシート(HTML) 29 Page - STMicroelectronics |
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29 / 84 page  29/84 ST62T28C/E28C INTERRUPTS (Cont’d) 3.4.3 Interrupt Option Register (IOR) The Interrupt Option Register (IOR) is used to en- able/disable the individual interrupt sources and to select the operating mode of the external interrupt inputs. This register is write-only and cannot be accessed by single-bit operations. Address: 0C8h — Write Only Reset status: 00h Bit 7, Bits 3-0 = Unused. Bit 6 = LES: Level/Edge Selection bit. When this bit is set to one, the interrupt source #1 is level sensitive. When cleared to zero the edge sensitive mode for interrupt request is selected. Bit 5 = ESB: Edge Selection bit. The bit ESB selects the polarity of the interrupt source #2. Bit 4 = GEN: Global Enable Interrupt. When this bit is set to one, all interrupts are enabled. When this bit is cleared to zero all the interrupts (excluding NMI) are disabled. When the GEN bit is low, the NMI interrupt is ac- tive but cannot cause a wake up from STOP/WAIT modes. This register is cleared on reset. 3.4.4 Interrupt sources Interrupt sources available on the ST62E28C/ T28C are summarized in the Table 10 with associ- ated mask bit to enable/disable the interrupt re- quest. Table 10. Interrupt Requests and Mask Bits 70 - LES ESB GEN - - - - Peripheral Register Address Register Mask bit Masked Interrupt Source Interrupt source GENERAL IOR C8h GEN All Interrupts, excluding NMI All TIMER TSCR1 D4h ETI TMZ: TIMER Overflow source 4 A/D CONVERTER ADCR D1h EAI EOC: End of Conversion source 4 UART UARTCR D7h RXIEN TXIEN RXRDY: Byte received TXMT: Byte sent source 4 ARTIMER ARMC E5h OVIE CPIE EIE OVF: ARTIMER Overflow CPF: Successful compare EF: Active edge on ARTIMin source 3 SPI SIDR DCh ALL End of Transmission source 1 Port PAn ORPA-DRPA C0h-C4h ORPAn-DRPAn PAn pin source 1 Port PBn ORPB-DRPB C1h-C5h ORPBn-DRPBn PBn pin source 2 Port PCn ORPC-DRPC C2h-C6h ORPCn-DRPCn PCn pin source 0 Port PDn ORPD-DRPD C3h-C7h ORPDn-DRPDn PDn pin source 2 29 |
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