參數(shù)資料
型號： ST7DALI
廠商： 意法半導體
元件分類： ADC
英文描述： 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI, DALI
中文描述： 8位單電壓閃存存儲器，數(shù)據(jù)EEPROM，模數(shù)轉換器，定時器，SPI和大理微控制器
文件頁數(shù)： 36/141頁
文件大?。?/td> 2175K
代理商： ST7DALI
ST7DALI
36/141
1
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.
7
0
IS31
IS30
IS21
IS20
IS11
IS10
IS01
IS00
ISx1 ISx0
External Interrupt Sensitivity
0
0
1
1
0
1
0
1
Falling edge & low level
Rising edge only
Falling edge only
Rising and falling edge
7
0
ei31
ei30
ei21
ei20
ei11
ei10
ei01
ei00
ei31
ei30
I/O Pin
0
0
1
0
1
0
PB0 *
PB1
PB2
ei21
ei20
I/O Pin
0
0
1
1
0
1
0
1
PB3 *
PB4
1)
PB5
PB6
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