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AT89LS52 데이터시트(PDF) 18 Page - ATMEL Corporation

부품명 AT89LS52
상세설명  8-bit Low-Voltage Microcontroller with 8K Bytes In-System Programmable Flash
PDF  39 Pages
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제조업체  ATMEL [ATMEL Corporation]
홈페이지  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89LS52 데이터시트(HTML) 18 Page - ATMEL Corporation

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18
AT89LS52
2601A–12/01
Figure 6. Interrupt Sources
Table 7. Interrupt Enable (IE) Register
(MSB)
(LSB)
EA
–
ET2
ES
ET1
EX1
ET0
EX0
Enable Bit = 1 enables the interrupt.
Enable Bit = 0 disables the interrupt.
Symbol
Position
Function
EA
IE.7
Disables all interrupts. If EA = 0, no interrupt is
acknowledged. If EA = 1, each interrupt source is
individually enabled or disabled by setting or clearing
its enable bit.
–
IE.6
Reserved.
ET2
IE.5
Timer 2 interrupt enable bit.
ES
IE.4
Serial Port interrupt enable bit.
ET1
IE.3
Timer 1 interrupt enable bit.
EX1
IE.2
External interrupt 1 enable bit.
ET0
IE.1
Timer 0 interrupt enable bit.
EX0
IE.0
External interrupt 0 enable bit.
User software should never write 1s to reserved bits, because they may be used in future AT89
products.
IE1
IE0
1
1
0
0
TF1
TF0
INT1
INT0
TI
RI
TF2
EXF2



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