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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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ST7L09 Datasheet(PDF) 30 Page - STMicroelectronics |
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ST7L09 Datasheet(HTML) 30 Page - STMicroelectronics |
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30 / 104 page  ST7L05, ST7L09 30/104 INTERRUPTS (Cont’d) EXTERNAL INTERRUPT CONTROL REGISTER (EICR) Read/Write Reset Value: 0000 0000 (00h) Bits 7:6 = IS3[1:0] ei3 sensitivity These bits define the interrupt sensitivity for ei3 (Port B0) according to Table 8. Bits 5:4 = IS2[1:0] ei2 sensitivity These bits define the interrupt sensitivity for ei2 (Port B3) according to Table 8. Bits 3:2 = IS1[1:0] ei1 sensitivity These bits define the interrupt sensitivity for ei1 (Port A7) according to Table 8. Bits 1:0 = IS0[1:0] ei0 sensitivity These bits define the interrupt sensitivity for ei0 (Port A0) according to Table 8. Note: These 8 bits can be written only when the I bit in the CC register is set. Table 8. Interrupt Sensitivity Bits 70 IS31 IS30 IS21 IS20 IS11 IS10 IS01 IS00 ISx1 ISx0 External Interrupt Sensitivity 0 0 Falling edge & low level 0 1 Rising edge only 1 0 Falling edge only 1 1 Rising and falling edge 1 |
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