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ST7DALI データシート(PDF) 36 Page - STMicroelectronics |
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ST7DALI データシート(HTML) 36 Page - STMicroelectronics |
36 / 141 page ST7DALI 36/141 INTERRUPTS (Cont’d) EXTERNAL INTERRUPT CONTROL REGISTER (EICR) Read/Write Reset Value: 0000 0000 (00h) Bit 7:6 = IS3[1:0] ei3 sensitivity These bits define the interrupt sensitivity for ei3 (Port B0) according to Table 6. Bit 5:4 = IS2[1:0] ei2 sensitivity These bits define the interrupt sensitivity for ei2 (Port B3) according to Table 6. Bit 3:2 = IS1[1:0] ei1 sensitivity These bits define the interrupt sensitivity for ei1 (Port A7) according to Table 6. Bit 1:0 = IS0[1:0] ei0 sensitivity These bits define the interrupt sensitivity for ei0 (Port A0) according to Table 6. Note: These 8 bits can be written only when the I bit in the CC register is set. Table 6. Interrupt Sensitivity Bits . EXTERNAL INTERRUPT SELECTION REGIS- TER (EISR) Read/Write Reset Value: 0000 1100 (0Ch) Bit 7:6 = ei3[1:0] ei3 pin selection These bits are written by software. They select the Port B I/O pin used for the ei3 external interrupt ac- cording to the table below. External Interrupt I/O pin selection * Reset State Bit 5:4 = ei2[1:0] ei2 pin selection These bits are written by software. They select the Port B I/O pin used for the ei2 external interrupt ac- cording to the table below. External Interrupt I/O pin selection * Reset State 1) Note that PB4 cannot be used as an external in- terrupt in HALT mode. 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 70 ei31 ei30 ei21 ei20 ei11 ei10 ei01 ei00 ei31 ei30 I/O Pin 0 0 PB0 * 0 1 PB1 1 0 PB2 ei21 ei20 I/O Pin 0 0 PB3 * 0 1 PB4 1) 1 0 PB5 1 1 PB6 1 |
同様の部品番号 - ST7DALI |
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同様の説明 - ST7DALI |
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