参数资料
型号: ST7PL35F2MCXXXRE
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-20
文件页数: 100/168页
文件大小: 2955K
代理商: ST7PL35F2MCXXXRE
Obsolete
Product(s)
- Obsolete
Product(s)
ST7L34, ST7L35, ST7L38, ST7L39
37/168
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 7.
Bits 5:4 = IS2[1:0] ei2 sensitivity
These bits define the interrupt sensitivity for ei2
(Port B3) according to Table 7.
Bits 3:2 = IS1[1:0] ei1 sensitivity
These bits define the interrupt sensitivity for ei1
(Port A7) according to Table 7.
Bits 1:0 = IS0[1:0] ei0 sensitivity
These bits define the interrupt sensitivity for ei0
(Port A0) according to Table 7.
Note: These 8 bits can be written only when the I
bit in the CC register is set.
Table 7. Interrupt Sensitivity Bits
EXTERNAL INTERRUPT SELECTION REGIS-
TER (EISR)
Read/Write
Reset Value: 0000 0000 (00h)
Bits 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 following table.
External Interrupt I/O pin selection
* Reset State
Bits 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
Bits 3:2 = ei1[1:0] ei1 pin selection
These bits are written by software. They select the
Port A I/O pin used for the ei1 external interrupt ac-
cording to the table below.
External Interrupt I/O pin selection
* Reset State
Bits 1:0 = ei0[1:0] ei0 pin selection
These bits are written by software. They select the
Port A I/O pin used for the ei0 external interrupt ac-
cording to the table below.
External Interrupt I/O pin selection
* Reset State
Bits 1:0 = Reserved
70
IS31
IS30
IS21
IS20
IS11
IS10
IS01
IS00
ISx1 ISx0
External Interrupt Sensitivity
0
Falling edge and low level
0
1
Rising edge only
1
0
Falling edge only
1
Rising and falling edge
70
ei31
ei30
ei21
ei20
ei11
ei10
ei01
ei00
ei31
ei30
I/O Pin
0
No interrupt *
0
1
PB0
1
0
PB1
1
PB2
ei21
ei20
I/O Pin
0
No interrupt *
0
1
PB3
1
0
PB5
1
PB6
ei11
ei10
I/O Pin
0
No interrupt *
0
1
PA4
1
0
PA5
1
PA6
ei01
ei00
I/O Pin
0
No Interrupt*
01
PA1
10
PA2
11
PA3
1
相关PDF资料
PDF描述
ST7PL35F2UA/XXXE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, QCC20
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