參數(shù)資料
型號(hào): SAB-C541U-1EP
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP52
文件頁(yè)數(shù): 31/65頁(yè)
文件大?。?/td> 427K
代理商: SAB-C541U-1EP
Semiconductor Group
31
1997-10-01
C540U
C541U
Interrupt System
The C541U provides seven (C540U : six) interrupt sources with two priority levels. Five interrupts
can be generated by the on-chip peripherals (timer 0, timer 1, SSC interface, and USB module), and
two interrupts may be triggered externally (P3.2/INT0 and P3.3/INT1).
Figure 15
to
17
give a general overview of the interrupt sources and illustrate the request and
control flags which are described in the next sections.
Figure 15
Interrupt Request Sources (Part 1)
000B
H
ET0
IEN0.1
TF0
TCON.5
Timer 0 Overflow
P3.2 /
INT0
P3.3 /
INT1
001B
H
ET1
IEN0.3
TF1
TCON.7
Timer 1 Overflow
IP0.1
PT0
IP0.3
PT1
0013
H
EX1
IEN0.2
IP0.2
PX1
Low Priority
High Priority
IEN0.7
EA
Bit addressable
Request Flag is cleared by hardware
0003
H
EX0
IEN0.0
IP0.0
PX0
IE0
TCON.1
IE0
TCON.3
IT0
TCON.0
1
ITCON.1
ITCON.0
IT1
TCON.2
1
ITCON.3
ITCON.2
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