Memory modules are generally marked with dimensions. If not, it depends on the number of particles. Let me show you one:
Samsung memory
For example: samsungk4h280838b-tcb0
Bit 1- chip function k stands for memory chip.
Bit 2-Chip Type 4 stands for dram.
The third bit-further description of the chip type, S stands for sdram, H stands for ddr, and G stands for sgram.
4th and 5th digits-capacity and refresh rate. Memory with the same capacity will use 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 256 megabits.
Capacity; 5 1 represents the capacity of 5 12mbit.
6th and 7th bits —— the number of data line pins, and 08 represents 8-bit data; 16 stands for 16 bit data; 32 represents 32-bit data; 64 denotes 64-bit data.
Bit 1 1- connects "-".
Bits 14 and15-the speed of the chip, for example, 60 means 6 ns70 or 7 ns7b means 7.5 ns (Cl = 3); 7c is 7.5ns (cl = 2); 80 is 8 ns 10.
That is 10ns(66mhz).
Knowing the meaning of the main numbers of the memory particle code, it is very easy to calculate the capacity of the memory stick after getting it. For example, Samsung ddr.
Memory, encapsulated with 18 pieces of samsungk4h280838b-tcb0 particles. The "28" in the 4th and 5th positions of the particle number indicates that the particle is 128 megabits,
The 6th and 7th "08" indicate that the block has 8-bit data bandwidth, so we can calculate the capacity of the memory bank as 128 megabits.
× 16 chip /8 bits = 256 megabytes.
Note: "bit" is "digit" and "b" is byte“byte ".If a byte is 8 bits, divide it by 8. On the calculation of memory capacity
There are two cases in the example given in this paper: one is non-ecc memory, and every eight particles with 8-bit data width can form a memory; in addition
An ecc memory in which an 8-bit ecc check code is added after every 64-bit data. Through the check code, two memory data can be detected.
Bit error, correct one bit error. Therefore, 18 granular memory with ecc function is not calculated in the actual capacity calculation process.
Actual capacity multiplied by 16. You can also judge that 18 or 9 memory bank is ecc memory when purchasing.
Hynix (Modern)
The significance of modern memory:
hy5dv64 1622at-36
hyxxxxxxxxxxxxxxxx
123456789 10 1 1 12
1 and hy stand for modern products.
2. Memory chip type: (57=sdram, 5d = DDR SDRAM); );
3. Working voltage: blank =5v, v = 3.3v, u = 2.5v.
4. Chip capacity and refresh rate: 16= 16mbits, 4kref；; 64=64mbits、8kref65=64mbits、4kref
128= 128mbits、8kref 129= 128mbits、4kref256=256mbits、 16 kref； 257 = 256 megabits, 8 kilobits
5. Width of data bits representing chip output: 40, 80, 16 and 32 represent 4 bits, 8 bits, 16 bits and 32 bits respectively.
6. Number of banks: 1, 2 and 3 represent 2, 4 and 8 banks respectively, which is the power 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 and D.. The later, the newer the kernel.
9. Represents power consumption: l= low-power chip, blank = ordinary chip.
10, memory chip package form: jc=400milsoj, TC = 400 mil TSOP-II, TD = 13 mm TSOP-II, TG = 16 mm TSOP-II.
1 1, working speed: 55: 183mhz, 5:200mhz, 45:222mhz, 43:233mhz, 4:250mhz, 33:300 MHz, l:ddr200,
h:ddr266b、k:ddr266a
Modern mbga encapsulated particles
Infineon (Infineon)
Infineon is a subsidiary of Siemens in Germany. At present, Infineon, a subsidiary of Siemens, only produces two kinds of storage particles in the domestic market.
Seed capacity: 128 megabits of particles and 256 megabits of particles. The figures detail the memory capacity and data width.
. Infineon's memory queue organization and management mode is that each particle consists of four banks. Therefore, it has few memory particle models and is difficult to distinguish.
Is the easiest.
Hyb39s 128400 means 128mb/4bits, and "128" means the particle capacity, and the last three digits mean the data width of the memory. other
Similarly, for example: hyb39s 128800, that is,128mb/8bits; Hyb39s 128 160 is128mb/16bits; Hyb39s256800, that is,
256 megabytes /8 bits.
The working rate of 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 is133mhz; ;
-8- indicates that the working frequency of the memory is 100mhz.
For example:
1 Kingston memory stick is produced by 16 Infineon hyb39s 128400-7.5 memory granules. Its capacity is calculated as follows:
128mbit×16 chips/8 = 256mbit.
1 ramaxel memory chip is produced by 8 Infineon hyb39s 128800-7.5 memory particles. Its capacity is calculated as 128mbits.
(megabits) ×8 chips /8= 128mb (megabytes).
Jin max, kti
Kingmax memory description
Kingmax memory is all encapsulated in Tiny BGA (tinybga (tinyballgridarray). And the packaging mode is a patented product, so we see that
Memory sticks made of kingmax particles are all produced by the factory itself. Kingmax memory granules have two capacities: 64mbits and128 bits.
You can list the memory granularity model of each capacity series here.
Capacity remarks:
Ksva 44t 4a0a-64mbits, 16m address space ×4-bit data width;
Ksv884t 4a0a-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 rate of kingmax memory has four states, which are separated by a short line symbol after the model to identify the working rate of the memory:
-7a——PC 133/cl = 2；
-7——PC 133/cl = 3；
-8a——PC 100/cl = 2；
-8——pc 100/cl=3 .
For example, a kingmax memory stick consists of 16 pieces of ksv884t4a0a-7a memory granules, and its capacity is calculated as 64mbits.
) × 16 chip /8= 128mb (megabytes).
Micron (micron)
The coding rules of Meguiar's memory are illustrated by the number mt48lc 16m8a2tg-75.
Meaning:
Mt- Meguiar's manufacturer name.
Type 48 memory. 48 stands for sdram；; 46 stands for ddr.
LC- supply voltage. Lc stands for 3v; C stands for 5v; V stands for 2.5v
16m8—— The granularity memory capacity is 128mbits, and the calculation method is: 16m (address) ×8-bit data width.
A2- Memory kernel version number.
TG- packaging method, TG is tsop packaging.
-75- the working speed of the memory, that is,133mhz; ; -65 means 150mhz.
For example, micronddr memory stick consists of 18 particles with the number of mt46v32m4-75. Memory supports ecc function. So every time
A bank is an odd number of storage particles.
Its capacity calculation is: capacity 32m×4bit× 16 chip /8=256mb (megabytes).
Winbond (Winbond)
Description of meaning:
wxxxxxxxx
12345
1 and w indicate that memory particles are produced by Winbond.
2. Representative memory types: 98 is sdram and 94 is ddrram.
3. Represents the version number of particles: common version numbers are B and H;
4. stands for package, H is tsop package, B is bga package and D is lqfp package.
5. Working frequency: 0: 10 ns,100mhz; ; 8:8ns、 125 MHz； z:7.5ns、 133 MHz； y:6.7ns、 150 MHz； Six minutes and six seconds,
166 MHz； 5:5 nanoseconds, 200 MHz
Moser language (Taiwan Province province, Maosi language)
Taiwan Province Mosi Technology is a large manufacturer of memory chips in Taiwan Province Province, and it doesn't supply much to the mainland, so we are not familiar with it. This particle number is
V54c365 164vdt45, numbers 6 and 7 are 65, that is to say, single particle is 64/8 = 8mb, and the bit width of single particle is 16bit from numbers 8 and 9.
It can be seen from the last three digits t45 of the serial number that the particle velocity is 4.5ns.
South Asia, elixir, pqi, pluss, atl, eudar
Nanya technology is the sixth largest memory chip manufacturer in the world, and the only profitable company among memory chip manufacturers in Taiwan Province Province last year, ranking fifth in the world.
A little. The serial number of this memory is NT5S5V8 M 16CT-7K, in which the fourth letter "S" stands for sdram memory, and the 6th and 7th bits 8 M stand for single particle capacity.
8m, 8, 9 bits 16 indicates the single particle bit width 16bit, and -7k indicates the speed of 7ns.
V-data (Hong Kong Victoria Harbour), a-data (Taiwan Province Victoria Harbour), vt
The memory particle number is vdd8608a8a-6b h0327, which is a 6-nanosecond particle. The capacity of 8 particles on one side is ***256m, and 0327 represents its production date.
This period is the 27th week of 2003.
References:
/bbs/dispbbs.asp？ boardID = 2 & ampID = 25 & amppage= 1
Respondent: Yilingchi-ranking 12 6 08: 55
The questioner's evaluation of the answer:
Thank you very much,
Other answers *** 6
Simply put, plug the memory into the computer, turn it on, and right-click my computer to see it.
And' look at the label on the memory' also has instructions.
Interviewee: Xie Han-Manager Level 4 6-6 08:54
Each memory module has its own size.
If you don't see or write it down in your memory
Insert the memory module into the memory slot.
Start the computer and enter windows. Right-click the My Computer property. In General, the memory size is displayed at the bottom. Remember that it is always a power of 2.
Oh, some computers display 504MB or something, which means that the memory bank 5 12MB is the number closest to the power of 2 (of course, sometimes
64+ 128 also has)
Respondent: Cang _ _ Cang-the probation period is 6-6 09:00.
We can plug it into the machine for testing.
In addition, the capacity of memory can be calculated by looking at the model of memory particles. Although there are many manufacturers of memory chips at present, but
There are relatively few manufacturers that can produce memory particles and occupy the market. Memory particles used by mainstream memory chips in domestic market
, mainly produced by some international manufacturers.
The following illustrates the identification method of memory capacity by taking the memory granule coding rules of several large factories as examples.
Samsung memory granules
At present, many manufacturers use Samsung's memory particles to produce memory chips, which has a high market share. Due to its huge product line,
Therefore, the naming rules of Samsung memory particles are very complicated. The model of Samsung memory granule is named by 16 digit code. This is useful.
Users are more concerned about the identification of memory capacity and working rate, so we focus on the meaning of these two parts.
Coding rule: K4XXXXXXXXX-XXXXX
Main meaning:
Bit 1- chip function k stands for memory chip.
Bit 2-Chip Type 4 stands for DRAM.
The third bit-further description of the chip type, S stands for SDRAM, H stands for DDR, and G stands for SGRAM.
4th and 5th digits-capacity and refresh rate. Memory with the same capacity will use 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 256 megabits.
Capacity; 5 1 represents the capacity of 5 12Mbit.
6th and 7th bits —— the number of data line pins, and 08 represents 8-bit data; 16 stands for 16 bit data; 32 represents 32-bit data; 64 denotes 64-bit data.
Bit 1 1- connects "-".
Bits 14 and15-the speed of the chip, for example, 60 means 6 ns70 or 7 ns7B means 7.5 ns (Cl = 3); 7C is 7.5ns (cl = 2); 80 is
8ns 10 is 10ns (66MHz).
Knowing the meaning of the main numbers of the memory particle code, it is very easy to calculate the capacity of the memory stick after getting it. For example, Samsung DDR.
Memory, encapsulated with 18 Samsung k2h 280838 b-TCB 0 particles. The "28" in the 4th and 5th positions of the particle number indicates that the particle is 128 megabits,
The 6th and 7th "08" indicate that the block has 8-bit data bandwidth, so we can calculate the capacity of the memory bank as 128 megabits.
× 16 chip /8 bits = 256 megabytes.
Note: "bit" is "digit" and "b" is byte“byte ".If a byte is 8 bits, divide it by 8. On the calculation of memory capacity
There are two cases in the example given in this paper: one is non-ECC memory, and every eight particles with 8-bit data width can form a memory; in addition
An ECC memory in which an 8-bit ECC check code is added after every 64-bit data. Through the check code, two memory data can be detected.
Bit error, correct one bit error. Therefore, 18 granular memory with ECC function is not calculated in the actual capacity calculation process.
Actual capacity multiplied by 16. You can also judge that 18 or 9 memory bank is ECC memory when purchasing.
Micron memory particles
The capacity identification of micron memory particles is much simpler than that of Samsung. Let's take the number of MT48LC 16M8A2TG-75 as an example.
Explain the coding rules of Meguiar's memory.
Meaning:
Mt- Meguiar's manufacturer name.
Type 48 memory. 48 stands for SDRAM；; 46 stands for DDR.
LC- supply voltage. LC stands for 3v; C stands for 5v; V stands for 2.5V
16M8—— The granularity memory capacity is 128Mbits, and the calculation method is: 16M (address) ×8-bit data width.
A2- Memory kernel version number.
TG packaging method, TG is TSOP packaging.
-75- the working speed of the memory, that is,133mhz; ; -65 means 150MHz.
Example: A micron DDR memory stick consists of 18 particles numbered MT46V32M4-75. Memory supports ECC function. So every time
A bank is an odd number of storage particles.
Its capacity calculation is: capacity 32M ×4bit × 16 chip /8=256MB (megabytes).
Siemens storage particle
At present, Infineon, a subsidiary of Siemens, only produces two kinds of memory particles in the domestic market: particles with capacity of 128Mbits and capacity.
It is a 256 megabit particle. The number details the capacity and data width of its memory. Infineon's memory queue organization and management mode
But each particle consists of four branches. So its memory particle model is relatively small, and it is also the easiest to distinguish.
HYB39S 128400 means 128MB/ 4bits, and "128" means the particle capacity, and the last three digits mean the data width of the memory. other
Similarly, for example: HYB39S 128800, that is,128mb/8bits; HYB39S 128 160 is128mb/16bits; HYB39S256800, that is,
256 megabytes /8 bits.
The working rate of 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 is133mhz; ;
-8- indicates that the working frequency of the memory is 100MHz.
For example:
1 Kingston memory stick is produced by 16 Infineon HYB39S 128400-7.5 memory granules. Its capacity is calculated as follows:
128mbit×16 chips/8 = 256mbit.
1 Ramaxel memory chip is produced by 8 Infineon HYB39S 128800-7.5 memory particles. Its capacity is calculated as follows:
128 megabits × 8 chips /8 = 128 megabits.
Kingmax memory granules
Kingmax memories are all encapsulated in TinyBGA ball grid array. And the packaging method is a patented product, so we
I saw that the memory chips made of Kingmax particles were all produced by the factory itself. Kingmax memory granules have two capacities: 64Mbits and.
128 megabits. You can list the memory granularity models of each capacity series here.
Capacity remarks:
Ksva 44t 4a0a-64mbits, 16M address space × 4-bit data width;
Ksv884t 4a0a-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 rate of Kingmax memory has four states, which are separated by a short line symbol after the model to identify the working rate of the memory:
-7A——PC 133/CL = 2；
-7——PC 133/CL = 3；
-8A——PC 100/CL = 2；
-8——PC 100 /CL=3 .
For example, a Kingmax memory stick consists of 16 pieces of KSV884T4A0A-7A memory granules, and its capacity is calculated as 64Mbits (megabytes).
Bit) × 16 chips /8= 128MB (megabytes).
Respondent: cyb cool- probation period 6-6 09:00.
General memory labels have detailed technical data such as memory model and capacity. You can also see the memory size when you plug it into the computer. special
Method: Right-click My Computer-Properties to display the memory size.