How much memory can the MSP430 support?
The basic MSP430 cannot support more memory (ROM + RAM + peripherals) than its 64K address space. In order to support this, an extended form of the MSP430 uses 20-bit registers and a 20-bit address space, allowing up to 1 MB of memory.
What is the difference between the basic and extended form of MSP430?
The basic MSP430 cannot support more memory (ROM + RAM + peripherals) than its 64K address space. In order to support this, an extended form of the MSP430 uses 20-bit registers and a 20-bit address space, allowing up to 1 MB of memory. This uses the same instruction set as the basic form, but with two extensions:
What is the top of the stack on the MSP430?
The top of stack is always the top of RAM, so the size of the stack depends on the amount of RAM in the device and how much data is being used by the rest of the program .const/.rodata: section where read only data exists. Stored on the flash on the MSP430. May include variables defined as ‘const’ and string literals.
How are arguments stored in the MSP430?
How the arguments are stored is defined by the ABI. On the MSP430, registers R12-R15 are reserved for this purpose. R12 is also the register where the return value will be stored. If you have a function that takes one argument of type ‘int’ (ie 16-bits), that argument will be passed using R12.
How many bits are required for MSP430 address lines?
TI MSP430DesignerTexas InstrumentsBits16-bitIntroduced14 February 1992TypeMemory-MemoryRegisters3 more rows
How many registers are available in MSP430?
16 registersRegister Overview The MSP430 has 16 registers. They're usually used as 16-bit registers, but they can be also be used as 8-bit or 20-bit registers in different situations, which is a bit confusing.
What is size of flash memory of MSP430?
The MSP430 main flash memory has a segment size of 512 bytes. All MSP430 devices also have some smaller 64-byte or 128-byte flash segments.
What is the architecture of MSP430?
Architecture. The MSP430 microcontroller is based on a von-Neumann architecture. The MSP430 von-Neumann architecture has one address space shared with special function registers (SFRs), peripheral control registers, RAM, and Flash/ROM memory.
What is the word size on the MSP430?
16 bitsThe default word size for the MSP430 is 16 bits however 8 bit data movement/manipulation is possible by appending “.
Which architecture is used in MSP430 Mcq?
Explanation: “ADC(.B) dst” this is emulated to “ADDC. B #0,dst” hence this is an emulated instruction.
What is operating voltage range of MSP430?
The MSP430 devices require only a single 3.3-V input; no sequencing is required. The operating input voltage for this reference design is 3.6V to 15V.
Is MSP430 RISC or CISC?
RISCThe MSP430 family of ultra-low- power 16-bit RISC mixed-signal processors from Texas Instruments (TI) provides the ultimate solution for battery-powered measurement applications.
What is MSP430 LunchBox?
MSP430 Lunchbox is a DIY platform for learning to interface and controlling different peripherals based on the requirements. It supports TI MSP430G series value line microcontroller series. The development platform is low cost and easy to program. Mini USB cable is provided for using the MSP430 LunchBox with Computer.
What is MSP in MSP430?
Well, MSP stands for Mixed Signal Processing. There are three types of signal processing techniques we generally deal with, namely, Analog signal processing, Digital signal processing and Mixed signal processing. Thus, the MSP430 family supports Mixed Signal Processing, making your tasks easier.
Is MSP430 a microcontroller?
The MSP430 is a 16-bit microcontroller that has a number of special features not commonly available with other microcontrollers: - Complete system on-a-chip — includes LCD control, ADC, I/O ports, ROM, RAM, basic timer, watchdog timer, UART, etc.
What are the various addressing modes of MSP430?
MSP430 Addressing ModesModeEncodingSyntaxRegister00/0RnIndexed01/1X(Rn)Absolute01/1. Reg=r2&ADDRIndirect Register10/-@Rn2 more rows
What are the various addressing modes of MSP430?
MSP430 Addressing ModesModeEncodingSyntaxRegister00/0RnIndexed01/1X(Rn)Absolute01/1. Reg=r2&ADDRIndirect Register10/-@Rn2 more rows
What is a constant generator register?
The constant generator is a mode for the source operand that allows you get certain common values to use in your operation, without having to use memory for them, or without having to have a special instruction.
Which are the low power operating modes of MSP430?
MSP430 has 5 low power modes named as LPM0 to LPM4 . The table below shows which clocks are active and which are disabled in various low power modes. LPM0 - Both CPU and MCLK are disabled. SMCLK and ACLK remain active.
How much memory does the MSP430 have?
In order to support this, an extended form of the MSP430 uses 20-bit registers and a 20-bit address space, allowing up to 1 MB of memory. This uses the same instruction set as the basic form, but with two extensions:
What architecture does the MSP430 use?
The MSP430 CPU uses a von Neumann architecture , with a single address space for instructions and data. Memory is byte -addressed, and pairs of bytes are combined little-endian to make 16-bit words .
What is a TI ez430?
The eZ430 Development Tool contains a full USB-connected flash emulation tool ("FET") for this new two-wire protocol, named " Spy-Bi-Wire " by TI. Spy-Bi-Wire was initially introduced on only the smallest devices in the 'F2xx family with limited number of I/O pins, such as the MSP430F20xx, MSP430F21x2, and MSP430F22x2. The support for Spy-Bi-Wire has been expanded with the introduction of the latest '5xx family, where all devices have support Spy-Bi-Wire interface in addition to JTAG.
What is the MSP430 used for?
The MSP430 can be used for low powered embedded devices. The current drawn in idle mode can be less than 1 µA. The top CPU speed is 25 MHz. It can be throttled back for lower power consumption. The MSP430 also uses six different low-power modes, which can disable unneeded clocks and CPU. Additionally, the MSP430 is capable ...
How many generations of MSP430?
There are six general generations of MSP430 processors. In order of development, they are the '3xx generation, the '1xx generation, the '4xx generation, the '2xx generation, the '5xx generation, and the '6xx generation.
When was the MSP430 made?
The MSP430 is a mixed-signal microcontroller family from Texas Instruments, first introduced on 14 February 1992. Built around a 16-bit CPU, the MSP430 is designed for low cost and, specifically, low power consumption embedded applications.
Can you use JTAG on MSP430?
JTAG debugging and flash programming tools based on OpenOCD and widely used in the ARM community are not available for the MSP430. Programming tools specially designed for the MSP430 are marginally less expensive than JTAG interfaces that use OpenOCD. However, should a project discover midstream that more MIPS, more memory, and more I/O peripherals are needed, those tools will not transfer to a processor from another vendor.
How many addressing modes does the MSP430 support?
The MSP430 supports seven addressing modes for the source operand and four addressing modes for the destination operand (see Table 4-5). The following sections describe each of the addressing modes, with a brief description, an example and the number of CPU clock cycles required for an instruction, depending on the instruction format and the addressing modes used.
How many MB is the MSP430X?
The MSP430X CPU extends the addressing capabilities of the MSP430 family beyond 64 kB to 1 MB. To achieve this, there are some changes to the addressing modes and two new types of instructions. One type of new instructions allows access to the entire address space, and the other is designed for address calculations.
What is the address of RAM?
RAM always starts at address 0200h. The end address of RAM depends on the amount of RAM present on the device. RAM is used for both code and data.
What is MSP430 flash?
The MSP430 flash devices contain an address space for information memory. It is like an onboard EEPROM, where variables needed for the next power up can be stored during power down. It can also be used as code memory. Flash memory may be written one byte or word at a time, but must be erased in segments. The information memory is divided into two 128-byte segments. The first of these segments is located at addresses 01000h through to 0107Fh (Segment B), and the second is at address 01080h through to 010FFh (Segment A). This is the case in 4xx devices. It is 256 bytes (4 segments of 64 bytes each) in 2xx devices.
What is the start address of a flash?
The start address of Flash/ROM depends on the amount of Flash/ROM present on the device. The start address varies between 01100h (60k devices) to 0F800h (2k devices) and always runs to the end of the address space at location 0FFFFh. Flash can be used for both code and data. Word or byte tables can also be stored and read by the program from Flash/ROM.
What is the MSP430?
The objective of this chapter is to provide a comprehensive description of the MSP430 architecture, covering its main characteristics: address space, the Central Processing Unit (CPU), the seven addressing modes and the instruction set. A review is made of the MSP430 assembly language instruction set composed of 27 base op-codes and 24 emulated instructions. It also discusses the techniques used to program in assembly language and the basics of writing an assembly-language program.
Where is the boot space on a MSP430?
The MSP430 flash devices contain an address space for boot memory, located between addresses 0C00h through to 0FFFh. The “bootstrap loader” is located in this memory space, which is an external interface that can be used to program the flash memory in addition to the JTAG. This memory region is not accessible by other applications, so it cannot be overwritten accidentally. The bootstrap loader performs some of the same functions as the JTAG interface (excepting the security fuse programming), using the TI data structure protocol for UART communication at a fixed data rate of 9600 baud.
Overview
MSP430 CPU
The MSP430 CPU uses a von Neumann architecture, with a single address space for instructions and data. Memory is byte-addressed, and pairs of bytes are combined little-endian to make 16-bit words.
The processor contains 16 16-bit registers, of which four are dedicated to special purposes: R0 is the program counter, R1 is the stack pointer, R2 is the status register, and R3 is a "constant gener…
Applications
The MSP430 can be used for low powered embedded devices. The current drawn in idle mode can be less than 1 µA. The top CPU speed is 25 MHz. It can be throttled back for lower power consumption. The MSP430 also uses six different low-power modes, which can disable unneeded clocks and CPU. Further, the MSP430 can wake-up in times under 1 microsecond, allowing the …
MSP430 generations
Six general generations of MSP430 processors exist. In order of development, they are: '3xx generation, '1xx generation, '4xx generation, '2xx generation, '5xx generation, and '6xx generation. The digit after the generation identifies the model (generally higher model numbers are larger and more capable), the third digit identifies the amount of memory included, and the fourth, if present, identifies a minor model variant. The most common variation is a different on-chip analog-to-digi…
Peripherals
The MSP430 peripherals are generally easy to use, with (mostly) consistent addresses between models, and no write-only registers (except for the hardware multiplier).
If the peripheral is not needed, the pin may be used for general purpose I/O. The pins are divided into 8-bit groups called "ports", each of which is controlled by a number of 8-bit registers. In some cases, the ports are arranged in pairs which can be accessed as 16-bit registers.
Software development environment
Texas Instruments provides various hardware experimenter boards that support large (approximately two centimeters square) and small (approximately one millimeter square) MSP430 chips. TI also provides software development tools, both directly, and in conjunction with partners (see the full list of compilers, assemblers, and IDEs). One such toolchain is the IAR C/C++ compiler and Integrated development environment, or IDE. A Kickstart edition can be downloade…
Low cost development platforms
The MSP430F2013 and its siblings are set apart by the fact that (except for the MSP430G2 Value Line) it is the only MSP430 part that is available in a dual in-line package (DIP). Other variants in this family are only available in various surface-mount packages. TI has gone to some trouble to support the eZ430 development platform by making the raw chips easy for hobbyists to use in prototypes.
Debugging interface
In common with other microcontroller vendors, TI has developed a two-wire debugging interface found on some of their MSP430 parts that can replace the larger JTAG interface. The eZ430 Development Tool contains a full USB-connected flash emulation tool (FET) for this new two-wire protocol, named Spy-Bi-Wire by TI. Spy-Bi-Wire was initially introduced on only the smallest devices in the 'F2xx family with limited number of I/O pins, such as the MSP430F20xx, MSP430F21x2, an…