Flash Memory Segmentation | Texas Instruments MSP430x1xx specs

Flash Memory Segmentation

5.2 Flash Memory Segmentation

MSP430 flash memory is partitioned into segments. Single bits, bytes, or words can be written to flash memory, but the segment is the smallest size of flash memory that can be erased.

The flash memory is partitioned into main and information memory sections. There is no difference in the operation of the main and information memory sections. Code or data can be located in either section. The differences between the two sections are the segment size and the physical addresses.

The information memory has two 128-byte segments (MSP430F1101 devices have only one). The main memory has two or more 512-byte segments. See the device-specific datasheet for the complete memory map of a device.

The segments are further dividing into blocks. A block is 64 bytes, starting at 0xx00h, 0xx40h, 0xx80h, or 0xxC0h, and ending at 0xx3Fh, 0xx7Fh, 0xxBFh, or 0xxFFh.

Figure 5−2 shows the flash segmentation using an example of 4-KB flash that has eight main segments and both information segments.

Figure 5−2. Flash Memory Segments, 4-KB Example

		4 KB + 256 byte
FFFFh


		4-kbyte
		Flash
		Main Memory
F000h

10FFh		256-byte
		Flash
1000h		Information Memory

FFFFh

FE00h

FDFFh

FC00h

F000h

10FFh

1000h

Segment0

Segment1

Segment2

Segment3

Segment4

Segment5

Segment6

Segment7

SegmentA

SegmentB

xxFFh

xxC0h

xxBFh

xx80h

xx7Fh

xx40h

xx3Fh

xx00h

Block

Flash Memory Controller

5-3

MSP430x1xx specifications

The Texas Instruments MSP430x1xx series is a family of ultra-low-power microcontrollers that are highly regarded in the embedded systems community for their versatility and performance. Designed for applications ranging from portable instrumentation to low-power industrial devices, the MSP430x1xx combines flexibility and efficiency with advanced features tailored for energy-sensitive applications.

One of the standout characteristics of the MSP430x1xx is its ultra-low-power operation. This series offers several low-power modes that can significantly extend battery life in portable devices. The microcontroller can be in active mode, low-power mode, or even in a deep sleep state, allowing developers to optimize power consumption based on the application's requirements. In fact, some configurations can operate at just a few microamps, making it ideal for battery-operated devices.

Another key feature is the 16-bit RISC architecture that provides powerful processing capabilities while maintaining a low power profile. The MSP430x1xx series supports a maximum clock speed of 16 MHz, allowing for efficient task execution while consuming minimal energy. This architecture ensures that programs run smoothly while the microcontroller remains energy efficient.

The MSP430x1xx is equipped with various integrated peripherals, including analog-to-digital converters (ADCs), timers, and communication interfaces like UART, SPI, and I2C. The inclusion of a powerful ADC enables the microcontroller to handle sensor readings with high accuracy, making it suitable for applications like environmental monitoring and medical devices. The integrated timers provide essential functionality for real-time applications, allowing for event-driven programming and precise timing control.

Memory options in the MSP430x1xx series are also robust, with configurations offering flash memory sizes from 1 KB to 64 KB. This flexibility allows developers to choose the optimal memory size for their specific applications, accommodating a wide range of requirements.

Additionally, the MSP430x1xx microcontrollers are designed with a wide operating voltage range, typically from 1.8V to 3.6V, making them compatible with various power sources and further enhancing their usability in diverse applications.

In summary, the Texas Instruments MSP430x1xx series of microcontrollers is an excellent choice for developers seeking low-power, high-performance solutions for embedded applications. With an efficient architecture, a rich set of peripherals, and flexible memory options, these microcontrollers are positioned to meet the growing demands of modern electronic designs, particularly in battery-powered and energy-sensitive applications.

Texas Instruments MSP430x1xx Flash Memory Segmentation, 2. Flash Memory Segments, 4-KB Example

Models: MSP430x1xx

5.2 Flash Memory Segmentation

Figure 5−2 shows the flash segmentation using an example of 4-KB flash that has eight main segments and both information segments.

Figure 5−2. Flash Memory Segments, 4-KB Example

MSP430x1xx specifications