25
4431E–8051–04/06
AT/TS8xC54/8X2
10. Interrupt System
The TS80C54/58X2 has a total of 7 interrupt vectors: two external interrupts (INT0 and INT1),
three timer interrupts (timers 0, 1 and 2) and the serial port interrupt. These interrupts are shown
Figure 10-1. Interrupt Control System
Each of the interrupt sources can be individually enabled or disabled by setting or clearing a bit
in the Interrupt Enable register (See Table 10-2.). This register also contains a global disable bit,
which must be cleared to disable all interrupts at once.
Each interrupt source can also be individually programmed to one out of four priority levels by
setting or clearing a bit in the Interrupt Priority register (See Table 10-3.) and in the Interrupt Pri-
ority High register (See Table 10-4.). shows the bit values and priority levels associated with
each combination.
Table 10-1.
Priority Level Bit Values
A low-priority interrupt can be interrupted by a high priority interrupt, but not by another low-prior-
ity interrupt. A high-priority interrupt can’t be interrupted by any other interrupt source.
IE1
0
3
High priority
interrupt
Interrupt
polling
sequence, decreasing from
high to low priority
Low priority
interrupt
Global Disable
Individual Enable
EXF2
TF2
TI
RI
TF0
INT0
INT1
TF1
IPH, IP
IE0
0
3
0
3
0
3
0
3
0
3
IPH.x
IP.x
Interrupt Level Priority
0
0 (Lowest)
01
1
10
2
1
3 (Highest)
相关PDF资料
AT87C52X2-SLSUM IC 8051 MCU 8K OTP 40MHZ 44PLCC
PIC16LF76-I/SP IC PIC MCU FLASH 8KX14 28DIP
PIC18LF2431-I/SO IC MCU FLASH 8KX16 28SOIC
AT87C52X2-SLSUL IC 8051 MCU 8K OTP 30MHZ 44PLCC
PIC32MX420F032H-40V/PT IC MCU 32BIT 32KB FLASH 64TQFP
PIC32MX320F064H-40V/PT IC MCU 32BIT 64KB FLASH 64TQFP
DSPIC33FJ64GP306A-I/PT IC DSPIC MCU/DSP 64K 64-TQFP
AT87C52X2-RLTUM IC 8051 MCU 8K OTP 40MHZ 44VQFP
相关代理商/技术参数
AT87C54X2-3CSUM 功能描述:8位微控制器 -MCU MICRO OTP RB/16K 40MHZ 5V C RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT87C54X2-3CSUV 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP
AT87C54X2-RLTUL 功能描述:8位微控制器 -MCU OTP C54/16K 40MHZ 3V COM TEMP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT87C54X2-RLTUM 功能描述:8位微控制器 -MCU OTP C54B/16K 40MHZ 5V COM TEMP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT87C54X2-RLTUV 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP
AT87C54X2-SLRUM 功能描述:8位微控制器 -MCU 16K 40MHz RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT87C54X2-SLSUL 功能描述:8位微控制器 -MCU OTP C54/16K 40MHZ 3V COM TEMP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT87C54X2-SLSUM 功能描述:8位微控制器 -MCU OTP C54/16K 40MHZ 5V IND TEMP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT