ST10F273Z4 STMicroelectronics, ST10F273Z4 Datasheet - Page 55
ST10F273Z4
Manufacturer Part Number
ST10F273Z4
Description
16-BIT MICROCONTROLLER WITH MAC UNIT, UP TO 832 KBYTES FLASH MEMORY AND UP TO 68 KBYTES RAM
Manufacturer
STMicroelectronics
Datasheet
1.ST10F273Z4.pdf
(188 pages)
Specifications of ST10F273Z4
Single Voltage Supply
5 V ±10%
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ST10F273Z4
When different sources submit an interrupt request, the enable bits (Byte High of XIRxSEL
register) define a mask which controls which sources will be associated with the unique
available vector. If more than one source is enabled to issue the request, the service routine
will have to take care to identify the real event to be serviced. This can easily be done by
checking the flag bits (Byte Low of XIRxSEL register). Note that the flag bits can also
provide information about events which are not currently serviced by the interrupt controller
(since masked through the enable bits), allowing an effective software management also in
absence of the possibility to serve the related interrupt request: a periodic polling of the flag
bits may be implemented inside the user application.
Figure 7.
The
four X-interrupt vectors.
Table 31.
CAN1 interrupt
CAN2 interrupt
I2C receive
I2C transmit
I2C error
SSC1 receive
SSC1 transmit
SSC1 error
ASC1 receive
ASC1 transmit
ASC1 transmit buffer
ASC1 error
Table 31
IT Source 7
IT Source 6
IT Source 5
IT Source 4
IT Source 3
IT Source 2
IT Source 1
IT Source 0
X-Interrupt basic structure
X-Interrupt detailed mapping
summarizes the mapping of the different interrupt sources which shares the
15
7
Enable[7:0]
Flag[7:0]
8
0
XIRxSEL[7:0] (x = 0, 1, 2, 3)
XIRxSEL[15:8] (x = 0, 1, 2, 3)
XP0INT
x
x
x
x
x
x
x
x
XP1INT
x
x
x
x
x
x
x
x
XPxIC.XPxIR (x = 0, 1, 2, 3)
XP2INT
x
x
x
x
x
x
x
Interrupt system
XP3INT
x
x
x
x
x
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