參數(shù)資料
型號(hào): ST72324BLJ2TA/XXX
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, TQFP-44
文件頁數(shù): 78/151頁
文件大小: 1209K
代理商: ST72324BLJ2TA/XXX
ST72F324L, ST72324BL
32/151
INTERRUPTS (Cont’d)
7.7 EXTERNAL INTERRUPT CONTROL REGISTER (EICR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:6 = IS1[1:0] ei2 and ei3 sensitivity
The interrupt sensitivity, defined using the IS1[1:0]
bits, is applied to the following external interrupts:
- ei2 (port B3..0)
- ei3 (port B7..4)
These 2 bits can be written only when I1 and I0 of
the CC register are both set to 1 (level 3).
Bit 5 = IPB Interrupt polarity for port B
This bit is used to invert the sensitivity of the port B
[3:0] external interrupts. It can be set and cleared
by software only when I1 and I0 of the CC register
are both set to 1 (level 3).
0: No sensitivity inversion
1: Sensitivity inversion
Bit 4:3 = IS2[1:0] ei0 and ei1 sensitivity
The interrupt sensitivity, defined using the IS2[1:0]
bits, is applied to the following external interrupts:
- ei0 (port A3..0)
- ei1 (port F2..0)
These 2 bits can be written only when I1 and I0 of
the CC register are both set to 1 (level 3).
Bit 2 = IPA Interrupt polarity for port A
This bit is used to invert the sensitivity of the port A
[3:0] external interrupts. It can be set and cleared
by software only when I1 and I0 of the CC register
are both set to 1 (level 3).
0: No sensitivity inversion
1: Sensitivity inversion
Bits 1:0 = Reserved, must always be kept cleared.
70
IS11
IS10
IPB
IS21
IS20
IPA
0
IS11 IS10
External Interrupt Sensitivity
IPB bit =0
IPB bit =1
00
Falling edge &
low level
Rising edge
& high level
0
1
Rising edge only
Falling edge only
1
0
Falling edge only
Rising edge only
1
Rising and falling edge
IS11 IS10
External Interrupt Sensitivity
0
Falling edge & low level
0
1
Rising edge only
1
0
Falling edge only
1
Rising and falling edge
IS21 IS20
External Interrupt Sensitivity
IPA bit =0
IPA bit =1
00
Falling edge &
low level
Rising edge
& high level
0
1
Rising edge only
Falling edge only
1
0
Falling edge only
Rising edge only
1
Rising and falling edge
IS21 IS20
External Interrupt Sensitivity
0
Falling edge & low level
0
1
Rising edge only
1
0
Falling edge only
1
Rising and falling edge
1
相關(guān)PDF資料
PDF描述
ST72324BLK2BA/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
ST72345C4T6 MICROCONTROLLER, PQFP48
ST72344K4T6 MICROCONTROLLER, PQFP32
ST72344S2T6TR MICROCONTROLLER, PQFP44
ST72344S4T6 MICROCONTROLLER, PQFP44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72324BLJ4 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3V RANGE 8-BIT MCU WITH 8 TO 32K FLASH/ROM, 10-BIT ADC, 4 TIMERS, SPI, SCI INTERFACE
ST72324BLJ4B1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3V range 8-bit MCU with 8 to 32K Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI interface
ST72324BLJ4B5 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3V range 8-bit MCU with 8 to 32K Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI interface
ST72324BLJ4B6 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3V range 8-bit MCU with 8 to 32K Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI interface
ST72324BLJ4BA 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3V RANGE 8-BIT MCU WITH 8 TO 32K FLASH/ROM, 10-BIT ADC, 4 TIMERS, SPI, SCI INTERFACE