参数资料
型号: ST7FL09Y0MATRE
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO16
封装: 0.150 INCH, ROHS COMPLIANT, PLASTIC, SOP-16
文件页数: 29/104页
文件大小: 2151K
代理商: ST7FL09Y0MATRE
Obsolete
Product(s)
- Obsolete
Product(s)
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
Falling edge & low level
0
1
Rising edge only
1
0
Falling edge only
1
Rising and falling edge
1
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