samsung memory
Example: samsungk4h28838b-tcb
1st place-chip function k, which stands for memory chip.
bit 2-chip type 4, representing dram.
No.3-further type description of the chip, where S stands for sdram, H stands for ddr, and G stands for sgram.
4th and 5th bits-capacity and refresh rate. Memory with the same capacity uses different refresh rates and different numbers. 64, 62, 63, 65, 66, 67 and 6a represent the capacity of 64mbit; 28, 27 and 2a represent the capacity of 128mbit; 56, 55, 57 and 5a represent the capacity of 256mbit; 51 represents the capacity of 512mbit.
6th and 7th bits-the number of data line pins, and 8 represents 8 bits of data; 16 represents 16-bit data; 32 represents 32-bit data; 64 represents 64-bit data.
11th place-connection "-".
14th and 15th bits-chip speed, for example, 6 is 6 ns; 7 is 7 ns; 7b is 7.5 ns (cl = 3); 7c is 7.5ns (cl = 2); 8 is 8 ns; 1 is 1ns(66mhz).
knowing the meaning of the main digits of memory granule coding, it is very easy to calculate its capacity after getting a memory stick. For example, a Samsung ddr memory is packaged with 18 pieces of samsungk4h28838b-tcb particles. No.4 and No.5 "28" means that the particle is 128mbits, and No.6 and No.7 "8" means that the particle has an 8-bit data bandwidth, so we can calculate that the capacity of the memory bank is 128mbits (megabits) ×16 chips /8bits=256mb (megabytes).
note: "bit" means "digit", "b" means byte, and a byte of 8 bits is divided by 8. Regarding the calculation of memory capacity, there are two cases in the example given in this paper: one is non-ecc memory, and every 8 pieces of 8-bit data width particles can form a memory; Another kind of ecc memory adds an 8-bit ecc check code after every 64-bit data. Through the check code, two errors in memory data can be detected and one error can be corrected. Therefore, in the process of actual capacity calculation, the parity bit is not calculated, and the actual capacity of the 18-chip memory bank with ecc function is multiplied by 16. At the time of purchase, it can also be judged that 18 or 9 memory chips are ecc memory.
hynix(hyundai) Modern
Meaning of modern memory:
Hy5dv641622at-36
Hyxxxxxxxxxxxxxxxxxxxx
1234567891112
1. hy stands for modern products
2. Memory chip type: (57.
3. working voltage: blank =5v, v=3.3v,u=2.5v
4. chip capacity and refresh rate: 16=16mbits, 4kref；; 64=64mbits、8kref； 65=64mbits、4kref； 128=128mbits、8kref； 129=128mbits、4kref； 256=256mbits、16kref； 257=256mbits, 8kref
5, data bit width representing chip output: 4, 8, 16, 32 represent 4 bits, 8 bits, 16 bits and 32 bits respectively
6, number of banks: 1, 2, 3 represent 2, 4 and 8 banks respectively, Is the power relation of 2
7, i/o interface: 1:sstl_3, 2:sstl_2
8, chip kernel version: it can be blank or letters such as A, B, C, D, etc., and the later represents the newer kernel
9, represents power consumption: l= low-power chip, and blank = ordinary chip. td=13mmtsop-ⅱ， Tg = 16mm tsop-ii
11, working speed: 55:183mhz, 5:2mhz, 45:222mhz, 43:233mhz, 4:25mhz, 33:3nhz, l:ddr2, h:ddr266b, K:ddr266a
particles encapsulated by modern mbga
infineon
infineon is a subsidiary of Siemens in Germany. At present, infineon, a subsidiary of Siemens, produces only two kinds of memory particles in the domestic market: particles with a capacity of 128mbits and particles with a capacity of 256mbits. The number lists the capacity and data width of its memory in detail. Infineon's memory queue organization and management mode is that each particle consists of 4 bank. Therefore, its memory particle model is relatively small, and it is also the easiest to distinguish.
hyb39s1284 is 128mb/4bits, "128" indicates the capacity of the granule, and the last three digits indicate the data width of the memory. The same is true for others, such as: hyb39s1288, that is, 128 MB/8 bits; Hyb39s12816 is 128 MB/16 bits; Hyb39s2568 is 256mb/8bits.
the working rate of p>infineon memory particles is expressed by adding a short line at the end of its model, and then marking the working rate.
-7.5-indicates that the working frequency of the memory is 133mhz；;
-8-indicates that the working frequency of the memory is 1mhz.
for example:
1 kingston memory stick, produced with 16 infineon hyb39s1284-7.5 memory granules. Its capacity is calculated as: 128mbits ×16 chips /8=256mb (megabytes).
1 memory stick of ramaxel, which is produced by 8 memory granules of infineon's hyb39s1288-7.5. Its capacity is calculated as: 128mbits ×8 chips /8=128mb (megabytes).
description of kingmax and kti
kingmax memory
kingmax memory is packaged in tinybga. And the packaging mode is a patented product, so we see that the memory chips made of kingmax particles are all produced by the factory itself. Kingmax memory granules have two capacities: 64mbits and 128mbits. Here you can list the memory granule models of each capacity series.
capacity remarks:
ksva 44t 4aa-64mbits, 16m address space ×4-bit data width;
ksv884t 4aa-64mbits, 8m address space× 8-bit data width;
ksv244t4xxx-128mbits, 32m address space ×4-bit data width;
ksv684t4xxx-128mbits, 16m address space× 8-bit data width;
ksv864t4xxx-128mbits, 8m address space× 16-bit data width.
the working speed of p>kingmax memory has four states, namely, the working speed of the memory is separated by a short line symbol after the model:
-7a —— PC 133/Cl = 2;
-7——pc133/cl=3；
-8a——pc1/cl=2；
-8——pc1/cl=3。
for example, a kingmax memory stick is made of 16 pieces of ksv884t4aa-7a memory granules, and its capacity is calculated as 64mbits ×16 pieces /8=128mb (megabytes).
micron
the code rule of micron memory is explained by the number of mt48lc16m8a2tg-75.
meaning:
mt-the manufacturer name of micron.
48-type of memory. 48 stands for sdram；; 46 stands for ddr.
LC-power supply voltage. Lc stands for 3v; C stands for 5v; V stands for 2.5v
16m8—— The granular memory capacity is 128mbits, and the calculation method is 16m (address) ×8-bit data width.
a2-the version number of the memory kernel.
tg-packaging method, TG is tsop packaging.
-75-working speed of memory, which means 133mhz；; -65 is 15mhz.
example: a micronddr memory stick, made of 18 pieces of particles numbered mt46v32m4-75. The memory supports ecc function. So each bank is an odd number of memory particles.
its capacity is calculated as: 32m×4bit×16 chips /8=256mb (megabytes).
winbond
Description:
wxxxxxxxx
12345
1, W stands for memory particles produced by winbond
2, stands for memory type: 98 is sdram, 94 is ddrram?
3. The version number representing the granule: the common version numbers are B and H;
4, stands for package, H is tsop package, B is bga package, D is lqfp package
5, working frequency: : 1 ns, 1mhz；; 8：8ns、125mhz； z：7.5ns、133mhz； y：6.7ns、15mhz； 6：6ns、166mhz； 5: 5：5ns, 2mhz
mosel (Taiwan Province Mosel)
Taiwan Province Mosel Technology is a large memory chip manufacturer in Taiwan Province, and its supply to mainland China is not much, so we are not familiar with it. The number of this particle is v54c365164vdt45, and the number 6 and 7 is 65, which means that the single particle is 64/8 = 8mb. From the number 8 and 9, the bit width of the single particle is 16bit, and from the last 3 digits t45, the particle speed is 4.5ns
Nanyang (South Asia), elixir, pqi, pluss, atl and so on. The number of this memory is nt5sv8m16ct-7k, in which the 4th letter "S" means sdram memory, the 6th and 7th bits 8m mean single particle capacity 8m, the 8th and 9th bits 16 mean single particle bit width 16bit, and -7k means speed 7ns.
v-data (Hongkong Weigang), a-data (Taiwan Province Weigang) and vt
The memory granule numbers are vdd868a8a-6b h327, which are 6 nanosecond granules with a capacity of ***256m on one side, and 327 means its production date is the 27th week of 23.