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HT98R068-1 Folha de dados(PDF) 64 Page - Holtek Semiconductor Inc

Nome de Peças HT98R068-1
Descrição Electrónicos  Two Way Radio 8-Bit MCU
Download  116 Pages
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Fabricante Electrônico  HOLTEK [Holtek Semiconductor Inc]
Página de início  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT98R068-1 Folha de dados(HTML) 64 Page - Holtek Semiconductor Inc

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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


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