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ST10F280 Datasheet(PDF) 67 Page - STMicroelectronics

Part # ST10F280
Description  16-bit MCU with MAC unit, 512 Kbyte Flash memory and 18 Kbyte RAM
PDF  239 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST10F280 Datasheet(HTML) 67 Page - STMicroelectronics

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ST10F280
Interrupt system
Doc ID 8673 Rev. 3
67/239
8.1
External interrupts
Fast external interrupt inputs are provided to service external interrupts with high precision
requirements. These fast interrupt inputs feature programmable edge detection (rising edge,
falling edge or both edges).
Fast external interrupts may also have interrupt sources selected from other peripherals; for
example the CANx controller receive signal (CANx_RxD) can be used to interrupt the
system. This new function is controlled using the ‘External Interrupt Source Selection’
register EXISEL.
EXISEL
Address:
0xF1DAh / EDh ESFR
Reset:
0x0000h
Type:
R/W
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
EXI7SS
EXI6SS
EXI5SS
EXI4SS
EXI3SS
EXI2SS
EXI1SS
EXI0SS
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
EXIxSS External Interrupt x Source Selection (x=7...0)
‘00’: Input from associated Port 2 pin.
‘01’: Input from “alternate source”.
‘10’: Input from Port 2 pin ORed with “alternate source”.
‘11’: Input from Port 2 pin ANDed with “alternate source”.
EXIxSS
Port 2 pin
Alternate Source
0P2.8
CAN1_RxD
1P2.9
CAN2_RxD
2...7
P2.10...15
Not used (zero)



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