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HT98R068-1 Folha de dados(PDF) 64 Page - Holtek Semiconductor Inc |
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HT98R068-1 Folha de dados(HTML) 64 Page - Holtek Semiconductor Inc |
64 / 116 page Rev. 1.10 64 �e���a�� 1�� �01� Rev. 1.10 65 �e���a�� 1�� �01� HT98R068-1 Two Way Radio 8-Bit MCU HT98R068-1 Two Way Radio 8-Bit MCU Interrupts Interrupts are an important part of any microcontroller system. When an external event or an internal function such as a Timer/Event Counter or Time Base requires microcontroller attention, their corresponding interrupt will enforce a temporary suspension of the main program allowing the microcontroller to direct attention to their respective needs. The device provides an external interrupt and multiple internal interrupts. The external interrupt is controlled by the action of the external interrupt pin, while the internal interrupts are controlled by the Timer/Event Counters overflow and the Timer base overflow. Interrupt Register Overall interrupt control, which means interrupt enabling and request flag setting, is controlled by using two registers, INTC0 and INTC1. By controlling the appropriate enable bits in this registers each individual interrupt can be enabled or disabled. Also when an interrupt occurs, the corresponding request flag will be set by the microcontroller. The global enable flag if cleared to zero will disable all interrupts. INTC0 Register Bit 7 6 5 4 3 2 1 0 Name — T0� AUP� EI� T0E AUPE EEI EMI R/W — R/W R/W R/W R/W R/W R/W R/W POR — 0 0 0 0 0 0 0 Bit 7 unimplemented, read as “0” Bit 6 T0F: Timer/Event Counter 0 interrupt request flag 0: inactive 1: active Bit 5 AUPF: Audio Processor request flag 0: inactive 1: active Bit 4 EIF: External interrupt request flag 0: inactive 1: active Bit 3 T0E: Timer/Event Counter 0 interrupt enable 0: disable 1: enable Bit 2 AUPE: Audio Processor interrupt enable 0: disable 1: enable Bit 1 EEI: External interrupt enable 0: disable 1: enable Bit 0 EMI: Master interrupt global enable 0: disable 1: enable |
Nº de peça semelhante - HT98R068-1_13 |
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Descrição semelhante - HT98R068-1_13 |
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