We will continue to analyze which foreign microcircuits are used in Russia based on customs statistics. How do we do it? From the data of the FCS, we select the records in which the nominal value of the imported microcircuit is indicated, and using the internal database we supplement this record with the main parameters of the microcircuit, starting from the manufacturer, bit sizes, power ranges and ending with the type of case, packaging, and so on. In this part, let's look at memory chips.
Part 1. General analysis
Part 2. ADC / DAC and Microcontrollers
Just over 130K memory chips were imported in 2019. In this case, you need to understand what exactly the microcircuits are. For example, "strips" of dynamic memory for computers or memory cards are already imported as modules or components for computers and, unfortunately, do not get into the statistics of microcircuits. We are considering clean microcircuits that are imported to solder.
We can divide all microcircuits into non-volatile EERPOM, FLASH, FRAM, i.e. store information in the absence of power, volatile dynamic RAM (DRAM) and static (SRAM) and others, such as configuration Flash used to store "firmware" FPGA and NVSRAM - this is static RAM, but with a battery, due to which it turns into non-volatile. This is a very ancient solution, but still someone uses them, although FRAM has already replaced it.
( 116), (13). . .
DDR3. .
Micron ( ). MT41K128 - DDR3-1600, 2 Micron, 3$.
USB .
, , 1 .
EERPOM STM.
Flash , FRAM Fujitsu.
EEPROM I2C
Flash I2C , SPI.
? , SO-8 .
, ~1 , I2C ( SPI, ) 8- . , 0,4$ . EEPROM - M24512 ST 512 0,3$. ST 10 .