参数资料
型号: SAF-C515-LN
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 16 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 19/162页
文件大小: 771K
代理商: SAF-C515-LN
Semiconductor Group
7-4
Interrupt System
C515
7.1
Interrupt Registers
7.1.1 Interrupt Enable Registers
Each interrupt vector can be individually enabled or disabled by setting or clearing the
corresponding bit in the interrupt enable registers IEN0 and IEN1. Register IEN0 also contains the
global disable bit (EAL), which can be cleared to disable all interrupts at once. Generally, after reset
all interrupt enable bits are set to 0. That means that the corresponding interrupts are disabled.
The IEN0 register contains the general enable/disable flags of the external interrupts 0 and 1, the
timer interrupts, and the USART interrupt.
Special Function Register IEN0 (Address A8H)
Reset Value : 00H
The shaded bit is not used for interrupt control.
Bit
Function
EAL
Enable/disable all interrupts.
If EAL=0, no interrupt will be acknowledged.
If EAL=1, each interrupt source is individually enabled or disabled by setting or
clearing its enable bit.
ET2
Timer 2 overflow / external reload interrupt enable.
If ET2 = 0, the timer 2 interrupt is disabled.
If ET2 = 1, the timer 2 interrupt is enabled.
ES
Serial channel (USART) interrupt enable
If ES = 0, the serial channel interrupt 0 is disabled.
If ES = 1, the serial channel interrupt 0 is enabled.
ET1
Timer 1 overflow interrupt enable.
If ET1 = 0, the timer 1 interrupt is disabled.
If ET1 = 1, the timer 1 interrupt is enabled.
EX1
External interrupt 1 enable.
If EX1 = 0, the external interrupt 1 is disabled.
If EX1 = 1, the external interrupt 1 is enabled.
ET0
Timer 0 overflow interrupt enable.
If ET0 = 0, the timer 0 interrupt is disabled.
If ET0 = 1, the timer 0 interrupt is enabled.
EX0
External interrupt 0 enable.
If EX0 = 0, the external interrupt 0 is disabled.
If EX0 = 1, the external interrupt 0 is disabled.
EAL
WDT
ET2
ES
A8H
IEN0
Bit No.
AFH
MSB
LSB
ET1
EX1
ET0
EX0
AEH
ADH
ACH
ABH
AAH
A9H
A8H
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