参数资料
型号: SAF-C505CA-4R
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44
封装: METRIC, PLASTIC, QFP-44
文件页数: 41/88页
文件大小: 1224K
代理商: SAF-C505CA-4R
C505/C505C/C505A/C505CA
Data Sheet
42
12.00
Interrupt System
The C505 provides 12 interrupt vectors with four priority levels. Five interrupt requests can be
generated by the on-chip peripherals (timer 0, timer 1, timer 2, serial interface, A/D converter). One
interrupt can be generated by the CAN controller (C505C and C505CA only) or by a software setting
and in this case the interrupt vector is the same. Six interrupts may be triggered externally (P3.2/
INT0, P3.3/INT1, P1.0/AN0/INT3/CC0, P1.1/AN1/INT4/CC1, P1.2/AN2/INT5/CC2, P1.3/AN3/INT6/
CC3). Additionally, the P1.5/AN5/T2EX can trigger an interrupt. The wake-up from power-down
mode interrupt has a special functionality which allows to exit from the software power-down mode
by a short low pulse at either pin P3.2/INT0 or the pin P4.1/RXDC.
Figure 21 to Figure 23 give a general overview of the interrupt sources and illustrate the request
and the control flags which are described in the next sections. Table 9 lists all interrupt sources with
their request flags and interrupt vector addresses.
Table 9
Interrupt Source and Vectors
Interrupt Source
Interrupt Vector Address
Interrupt Request Flags
External Interrupt 0
0003H
IE0
Timer 0 Overflow
000BH
TF0
External Interrupt 1
0013H
IE1
Timer 1 Overflow
001BH
TF1
Serial Channel
0023H
RI / TI
Timer 2 Overflow / Ext. Reload
002BH
TF2 / EXF2
A/D Converter
0043H
IADC
CAN Controller / Software Interrupt 004BH
– / SWI
External interrupt 3
0053H
IEX3
External Interrupt 4
005BH
IEX4
External Interrupt 5
0063H
IEX5
External interrupt 6
006BH
IEX6
Wake-up from power-down mode
007BH
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