参数资料
型号: AT89EB5114-TGSIL
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: Low-pin-count 8-bit microcontroller with A/D converter
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDSO20
封装: SO-20
文件页数: 67/95页
文件大小: 1126K
代理商: AT89EB5114-TGSIL
67
4311A–8051–01/05
Interrupt System
The AT8xEB5114 has a total of 8 interrupt vectors: two external interrupts (INT0 and
INT1), two timer interrupts (timers 0, 1), serial port interrupt, PWMU0, PWMU1 and A/D.
These interrupts are shown in Figure 31.
Figure 31.
Interrupt Control System
Each of the interrupt sources can be individually enabled or disabled by setting or clear-
ing a bit in the Interrupt Enable register (See Table 54). This register also contains a
global disable bit, which must be cleared to disable all interrupts simultaneously.
Each interrupt source can also be individually programmed to one of four priority levels
by setting or clearing a bit in the Interrupt Priority register (See Table 55) and in the
Interrupt Priority High register (See Table 56). Table 53 shows the bit values and priority
levels associated with each combination.
0
3
High priority
interrupt
Interrupt
polling
sequence
Low priority
interrupt
Global
disable
Individual
enable
TF0
INT0
TF1
IPH, IP
IE0
0
3
0
3
0
3
0
3
0
3
0
3
3
ADC
0
0
3
PWMU0
PWMU1
0
1
ESB0
INT1
IE1
0
1
ESB1
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