ST10F280_12 datasheet(67/239 Pages) STMICROELECTRONICS

tên linh kiện	ST10F280

Giải thích chi tiết về linh kiện	16-bit MCU with MAC unit, 512 Kbyte Flash memory and 18 Kbyte RAM

PDF	239 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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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’

EXISEL

Address:

0xF1DAh / EDh ESFR

Reset:

0x0000h

Type:

R/W

EXI7SS

EXI6SS

EXI5SS

EXI4SS

EXI3SS

EXI2SS

EXI1SS

EXI0SS

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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