The_MSP430_Slides.pptx
- 1. WORKSHOP ON MSP430- ARCHITECTURE AND PROGRAMMING 23.12.2022 Image Courtesy of Recording Connection of Canada Mrs. R. Kiruthikaa Assistant Professor Department of ECE Karpagam Institute of Technology Coimbatore
- 2. OVERVIEW THE MSP430 • Low Power Microcontroller • Released in 1990s • 16 bit, RISC based, mixed signal processor • Intelligent peripherals • Ease of use • Low cost and Low power consumption for several applications
- 3. THE MSP430 • It is flexible for ultra power saving applications. • Clocking system, multiple low power modes, instant wakeup • and intelligent autonomous peripherals enable true ultra low power optimization. Key features Ultra low power architecture Flexible clock system and extended battery life time Low operating voltage : 1.8 V to 3.6 V Interconnects MAB and MDB
- 4. CHAPTER : THE MSP430 EMBEDDED SYSTEMS DESIGN MSP430 HARDWARE OVERVIEW Computer Overview Image Courtesy of Recording Connection of Canada LaunchPad
- 5. MSP430 FAMILY (MSP = MIXED SIGNAL PROCESSOR) THE MSP430 • Produced by Texas Instruments. • Low-power signal processing. • Low cost. • Based on 16-bit CPU. • ROM and R/W memory. • Abundant suite of peripherals. Texas Instruments logo http://www.ti.com/legal/trademarks/signature-and-logo.html
- 6. BYTE MEMORY ACCESS VS. WORD MEMORY ACCESS THE MSP430 • Bytes are located at even or odd address. • Words are located in the ascending memory locations aligned to even addresses with the low byte (LB) at the even address, followed by the high byte (HB) at the next odd. .address Image Courtesy of Recording Connection of Canada
- 7. PROGRAM MEMORY THE MSP430 • Non-volatile memory sizes range from 0 to 512 kB. • Include MROM, Flash, and FRAM. • FRAM-based devices have regions of the non-volatile memory that can be written to by the program for storage of data when power is removed. Image Courtesy of Recording Connection of Canada
- 8. DATA MEMORY THE MSP430 • R/W, volatile memory is also known as RAM. • RAM ranges from 125 bytes to 66 kB. • Implemented with SRAM technology; some MCUs may also contain a small amount of FRAM for data memory. Image Courtesy of Recording Connection of Canada
- 9. CENTRAL PROCESSING UNIT THE MSP430 REGISTERS • The MSP430 CPU has 16 registers that are 20-bits wide. • Registers are operated on as 16- bit words. • Register Names - R0, R1, R2, R3, …, R15. • R0 – R3 are special purpose registers (cannot be manipulated directly by the software). • R4 – R15 are general-purpose registers (can be used in any manner by the program).
- 10. CENTRAL PROCESSING UNIT THE MSP430 4.1.4.1 REGISTERS • R0: Program Counter (PC) – holds the address of the next instruction in program memory to execute; provides access to 220 = 1,048,576 address locations in the memory system. • R1: Stack Pointer (SP) – provides a way to dynamically allocate variable space in the data memory without having to keep track of specific addresses. Image Courtesy of Recording Connection of Canada
- 11. CENTRAL PROCESSING UNIT THE MSP430 REGISTERS • R2: Status Register (SR) – contains status bits, or flags, that are asserted when various conditions occur during the execution. Image Courtesy of Recording Connection of Canada
- 12. CENTRAL PROCESSING UNIT THE MSP430 REGISTERS • R3: Constant Generator (GC) – used by the CPU to speed up the instruction execution. • R4 – R15: General-Purpose Registers – can be used for anything the programmer wants. Image Courtesy of Recording Connection of Canada
- 13. CENTRAL PROCESSING UNIT THE MSP430 ALU • Performs all mathematical and logical operations. • Operates on data being held in CPU registers. • Contains logic to produce status bits (VNZC) that are latched into the status register for specific instructions. • Only operates on the lower 16- bits of the CPU registers. Image Courtesy of Recording Connection of Canada
- 14. INPUT / OUTPUT PORTS & PERIPHERALS THE MSP430 Image Courtesy of Recording Connection of Canada
- 15. MSP430FR2355 THE MSP430 Image Courtesy of Recording Connection of Canada
- 16. MSP430FR2355TPT THE MSP430 • MCLK = 1MHz • 64k memory system (16-bit MAB) • 32k FRAM program memory • 4k (SRAM) + 512 (FRAM) data memory • 6x digital I/O ports - P1 (8-bit) PA = P1:P2 - P2 (8-bit) - P3 (8-bit) PB = P3:P4 - P4 (8-bit) - P5 (5-bit) PC = P5:P6 - P6 (7-bit) • 4x eUSCI’s - 2x switchable between UART & SPI - 2x switchable between SPI & I2C Image courtesy of Texas Instruments • 4x timers • RTC • Watchdog timer • 12-bit ADC • 4x SACs
- 18. LAUNCHPAD DOCUMENTATION THE MSP430 • MSP430FR4xx and MSP430FR2xx Family User's Guide (Rev. I) (http://www.ti.com/lit/ug/slau445i/slau445i.pdf) • MSP430FR235x, MSP430FR215x Mixed-Signal Microcontrollers datasheet (Rev. D) (http://www.ti.com/lit/ds/slasec4d/slasec4d.pdf) • MSP430FR2355 LaunchPad™ Development Kit (MSP- EXP430FR2355) User's Guide (http://www.ti.com/lit/ug/slau680/slau680.pdf)
- 19. THANK YOU !!! Image Courtesy of Recording Connection of Canada