MSP430 Part Numbering
An MSP430 part number such as "MSP430F2618ATZQWT-EP" consists of the following pieces:
- MSP430: Standard prefix.
- F: Indicates a memory type or specialized application. "F" indicating flash memory is by far the most popular. Other options for memory type include "C" for masked ROM, "FR" for FRAM, "G" for Flash Value Line, and "L" as in the MSP430L09x series, which indicates a RAM-only part; it must remain continuously powered to retain its programming. A second letter (except for "FR") indicates a specialized application for the part. For example, "G" is an optional specialization letter indicating hardware support for a specialized use. "E" indicates special electricity meter functions, "G" devices are designed for medical instrumentation, and "W" devices include a special "scan interface" designed for flow meters. An exception is the MSP430FG2xx devices, which are considered a separate generation.
- 2: The generation of device. There can be significant changes to core peripherals (clock generators, UARTs, etc.) in different generations. These are not in chronological order, but rather higher values roughly indicate greater size, complexity and cost. For example, generations 3 and 4 include LCD display controllers which the others do not.
- 6: The model within the generation. This indicates the mixture of on-board peripheral devices and number of pins.
- 18: One or two digits indicating the amount of memory on the device. The numbering is (mostly) consistent throughout the MSP430 series. Not all suffixes are valid with all models; most models are available in 3–6 memory sizes, chosen to match the other capabilities of the device. Larger numbers indicate increasing amounts of memory, but sometimes one type of memory (RAM or ROM) is sacrificed to fit more of the other.
| Suffix | RAM | ROM | Suffix | RAM | ROM | |
|---|---|---|---|---|---|---|
| 0 | 128 | 1 K | 10 | 5 K | 32 K | |
| 1 | 128 | 2 K | 11 | 10 K | 48 K | |
| 2 | 256 | 4 K | 12 | 5 K | 55/56 K | |
| 3 | 256 | 8 K | 13 | |||
| 4 | 512 | 12 K | 14 | |||
| 5 | 512 | 16 K | 15 | |||
| 6 | 1 K | 24 K | 16 | 4 K | 92 K | |
| 7 | 1 K | 32 K | 17 | 8 K | 92 K | |
| 8 | 2 K | 48K | 18 | 8 K | 116 K | |
| 9 | 2 K | 60K | 19 | 4 K | 120 K | |
- An optional suffix digit indicating a variant device, adding or deleting some analog peripherals. For example, a "1" suffix may indicate the addition of a comparator or deletion of an ADC. If the memory size is "1", this suffix can be confused with part of the memory size, but no single model is available in both "1" and "10" (or greater) memory sizes.
- An optional "A" suffix indicating an upward-compatible revised version. The MSP430F11x1A has an additional 256 bytes of data flash not present in the plain 'F11x1.
Trailing suffix letters indicate options not visible to software:
- T: Indicates a temperature range of −40°C to +105 °C.
- ZQW: Indicates the package the part is kept in. "ZQW" is a TI-specific name for a ball grid array.
- T: Indicates that the parts are shipped in small reel (7-inch) packaging.
- -EP: Indicates an additional feature. "-Q1" specifies that the part is automotive qualified. "-EP" and "-HT" indicate extended temperature products. Enhanced products, "-EP", have a temperature range from -40°C to 125°C, and extreme temperature parts, "-HT", have a temperature range from -56°C to 150°C.
Read more about this topic: TI MSP430
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