- 您现在的位置：买卖IC网 > PDF目录45186 > MB89PV950CF 8-BIT, 5 MHz, MICROCONTROLLER, CQFP64 PDF资料下载
参数资料
| 型号： | MB89PV950CF |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 5 MHz, MICROCONTROLLER, CQFP64 |
| 封装： | 0.80 MM PITCH, PIGGY BACK, MQFP-64 |
| 文件页数： | 37/110页 |
| 文件大小： | 619K |
| 代理商： | MB89PV950CF |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页当前第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页
HARDWARE CONFIGURATION
2– 17
(4) Description of operation
The functions of interrupt controllers are described below.
(a) Interrupt functions
The MB89950 series of microcontrollers have 7 inputs for interrupt requests
from the peripherals. The interrupt level is set by 2-bit registers
corresponding to each input. When an interrupt is requested from a
peripheral, the interrupt controller receives it and transfers the contents of
the corresponding level register to the CPU. The interrupt to the device is
processed as follows:
(1) An interrupt source is generated inside a peripheral.
(2) If an interrupt is enabled after referring to the interrupt-enable bit
inside the peripheral, an interrupt request is output from the
peripheral to the interrupt controller.
(3) After receiving this interrupt request, the interrupt controller
determines the priority of simultaneously-requested interrupts and
then transfers the interrupt level for the applicable interrupt to the
CPU.
(4) The CPU compares the interrupt level requested from the interrupt
controller with the IL bit in the processor status register.
(5) As a result of the comparison, if the interrupt level has priority over
the current interrupt processing level, the contents of the I-flag in the
same processor status register are checked.
(6) As a result of the check in step (5), if the I-flag is enabled for an
interrupt, the contents of the IL bit are set to the required level. As
soon as the currently-executing instruction is terminated, the CPU
performs the interrupt processing and transfers control to the
interrupt-processing routine.
(7) When an interrupt source is cleared by software in the user’s interrupt
processing routine, the CPU terminates the interrupt processing.
Fig. 2.7 outlines the interrupt operation for the MB89950 series of
microcontrollers.
Fig. 2.7 Interrupt-processing Flowchart
CPU
Internal bus
Register file
IPLA
IR
PS
I
IL
Check
Comparator
CPU
(5)
(4)
Enable FF
Source FF
AND
Level
comparator
Interrupt controller
(1)
(2)
(7)
Peripheral
(3)
(6)
Peripheral
相关PDF资料 |
PDF描述 |
|---|---|
| MB89951PFM | 8-BIT, MROM, 5 MHz, MICROCONTROLLER, PQFP64 |
| MB89T623PFM | 8-BIT, 10 MHz, MICROCONTROLLER, PQFP64 |
| MB89623RP-SH | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDIP64 |
| MB89625RPFV | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP64 |
| MB89W627C-SH | 8-BIT, UVPROM, 10 MHz, MICROCONTROLLER, CDIP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MB89PV960 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89PV980-101 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89PV980-201 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89PW625 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89R112B1QN-G-AMERE1 | 制造商:FUJITSU 功能描述: |
发布紧急采购，3分钟左右您将得到回复。