8051 REFERRENCE MANUALMS8PSPTI PKIPTOPXDBITSYMBOL FUNCTIONP7ReservedReservedReservedDefines the Serial Port intempt priorty level. PS1 programs itto the higher priority levelDefines the Timer1intempt prionity level. PTI1 programsitto the higher priority level.PAPSPTIDefines the Etenal intemupt 1 priarity level. PXI1 programs it to the higher priorty level.Enables or disabies the Tiner O intempt priorty level. PTO1 programs to the higher priorty level.P2PX1P.1PTOPOPXDDefines the Etenal intemupt O priority level. PADr1 programs it to the higher priority level.auFigure 19. Internupt Prierity RegisterINTERRUPT PRIORITY & INTERRUPT VECTOR ADDRESS TABLESourceIEDTFOVector Address0003HContainsJMP OBO0 RETI000BH0013H001BHJMP OB80 RETIJMP OC00 RETIJMP OC80 RETIJMP OD00 RETIIE1TF1RI+TI0023HETI EXIEAESETDEXDBITSYVBOL FUNCTIONE7EADisables alintenupts. HEA-O, no intenupt wll be acknowiedged. IF EA1, each intenuptsource is indvidually enabled or disabled by seting or clearing ts erable beReservedESReservedEnables or disables the Sefal Pat intamupt. ES-0, the Serial Port intemupt is disabled.Erables or disabies the Timer 1 Overfow intemupt I ETIO. the Timer 1 intemupt is disabled.Erables or disables Edemal irtemupt 1. FEX-0, Edemal interupt tis diabledEnables or disables the Timer 0Overfow intemupt IETD-O, the Teer Dintemrupt is disabledEnables or disables Extemal intemupt 0. HEXD-. Etemal intemupt Dis disabled.E4ESETIEXIETOEXOFigure 18. Interrupt Enable Register JE) Configure the IE and IP registers to enable Timer 1 and External Interrupt 1, but Timer 1 with ahigher interrupt priority than External Interrupt 1.A. Draw the registers and show your values in hex, next to each registerB. How is Timer 1 overflow detected and where will the execution jump when the interrupt isserviced?C. While External Interrupt 1 subroutine is running Timer 1 overflows, causing a nestedinterrupt. What will happen?

An interrupt is an event (either external or internal) that interrupts the CPU to inform that the…

Configure the IE and IP registers to enable Timer 1 and External Interrupt 1, but Timer 1 with a higher interrupt priority than External Interrupt 1. A. Draw the registers and show your values in hex, next to each register B. How is Timer 1 overflow detected and where will the execution jump when the interrupt is serviced? C. While External Interrupt 1 subroutine is running Timer 1 overflows, causing a nested interrupt. What will happen?

Configure the IE and IP registers to enable Timer 1 and External Interrupt 1, but Timer 1 with a higher interrupt priority than External Interrupt 1. A. Draw the registers and show your values in hex, next to each register B. How is Timer 1 overflow detected and where will the execution jump when the interrupt is serviced? C. While External Interrupt 1 subroutine is running Timer 1 overflows, causing a nested interrupt. What will happen?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Note: Please do not handwritten.also, don't write a lot of information.
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Question 2: The HCS12 registers have the values shown in the attached table.Where X, means the values is undefined. Answer the following:A. What is the HCS12 operational mode?B. What is the value on port B pins?C. What is the value on pins PT4-PT7?D. What is the value of X in PTT register?E. Is port B working in full or reduced power?F. What is the pins configuration of CAN2 and CAN4?
Imagine that a N.O. pushbutton is connected to a PLC input, and you push and release the button. To use that information, you you can act on any of the four states of this input's states. In chronological order, what are these "Four States of a Logic Bit" during an off-on-off event? Assume the "event" starts just before the button is pressed. 1. 2. False 3. Transition to False 4. True Pulsing On/off Transition to True Undefined
Discussion: 1. Explain what happens when the instruction sequence below is executed. LAHF MOV [BX+DI] , AH 2. What operation is performed by the instruction sequence that follows? MOV AH, [BX+SI] SAHF 3. What instruction should be executed to ensure that the carry flag is in the set state ? the reset state? 4. Which instruction when executed disables the interrupt interface?
Q4) List the procedural steps taken by the microcontroller when an interrupt was occurred.
Identify/describe two functions of the Programmable Interrupt Controller (PIC) Finish the sentence by adding more detail: i) Masks off interrupt lines...
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2. In the NUCLEO-F401RE board, user LED (green one) is connected to PA.5(GPIOA and pin 5), the Bule user button is connected to PC.13(GPIOC and pin 13). Using this information, write a sequence of C instructions that would do the following. a. Configure the GPIO pin connected to the Green LED as an output. b. Write a 1 to the pin to turn on the Green LED by writing to the output data register (ODR) of that GPIO port. c. Configure the GPIO pin connected to the push button as an input. d. Read the state of the button by reading the input data register (IDR) of that GPIO port. Notes: provide the segments of your codes. You do not need to provide an entire declaration of GPIOX address and related registers struct of the GPIO (we assume they are already declared). For example, if you want to read the input data for pin 15 of GPIOC, the following code is sufficient: int a GPIOC->IDR & (1 << 15);
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follows strict sequential order and does not consider time-critical needs; whereas allows an interrupt of higher priority to cause a lower-priority interrupt handler to be interrupted. Nested interrupt; sequential interrupt Multiple interrupt; priority interrupt Sequential interrupt; nested interrupt Nested interrupt; priority interrupt These are the features of transistors, EXCEPT Cheaper Smaller Made of metal plates Dissipates less heat than a vacuum tube