How many interrupts are there in MSP430?

The data sheet for each MSP430 device defines the pending priority for each of its hardware interrupts. In the case of the MSP430 F5529, there are 23 interrupts shown on the data sheet in decreasing priority.

What is interrupt in MSP430?

Interrupts are generally any trigger that causes the CPU to deviate from executing instructions in the order set by the instructions. When an interrupt occurs, the CPU of the MSP430 saves its current state and goes to handle the interrupt handler if one exists.

How is the interrupt priority in MSP430 determined?

The interrupt priorities on the MSP430 are in descending order from highest address in the vector table to the lowest. One important concept related to interrupt priorities is interrupt nesting.

What needs to be controlled to disable interrupts for an MSP430 microcontroller?

Depending on your MSP there might not be too many registers you will need to check to disable interrupts. Mainly you will need to check IE1, IE2, P1IE, P2IE, timer control registers etc.

Which of the following is true about MSP430 interrupts?

2. Which of the following is true? Explanation: All of the above mentioned statements are true i.e. interrupts are required to wake a CPU from sleep, same vector address associated with multiple flags and most of the interrupts are maskable.

How many low power modes are used in MSP430?

5 low power modes
MSP430 has 5 low power modes named as LPM0 to LPM4 .

What are various types of interrupts?

Interrupts have two types: Hardware interrupt and Software interrupt. The hardware interrupt occurrs by the interrupt request signal from peripheral circuits. On the other hand, the software interrupt occurrs by executing a dedicated instruction.

When a low to high transition occurs at NMI pin which interrupt occurs?

A subroutine is then vectored through an interrupt vector lookup table which is located in the system memory. NMI is non-maskable internally by software. A transition made from low(0) to high(1) initiates the interrupt at the end of the current instruction….Pin diagram of 8086 microprocessor.

A17/S4	A16/S3	Function
1	1	Data segment access

Which of the following can generate the interrupt in MSP430?

Explanation: The . intvec directive creates an interrupt vector entry that points to an interrupt routine name.

What are the operating modes of MSP430?

The MSP430 has four possible reset sources: applying supply voltage to VCC pin, a low input to the, RST/NMI pin, a programmable watchdog timer time-out and a security key violation during write access to WDTCTL register.

What are the various addressing modes of MSP430?

MSP430 Addressing Modes

Mode	Encoding	Syntax
Register	00/0	Rn
Indexed	01/1	X(Rn)
Absolute	01/1. Reg=r2	&ADDR
Indirect Register	10/-	@Rn