Weak current College】 【memory chip parameters describes】.

<br> <br> Specific meaning explained: <br> Case study: SAMSUNGK4H280838B-TCB0 <br> <br> The main meaning: <br> <br> 1-bit-chip features K, representing a memory chip. <br .> 2nd - chip type 4, on behalf of the DRAM. <br> The three-chip for further description of the type, S represents the SDRAM, DDR, GH represents SGRAM representatives. <br> <br> Sections 4, 5 - .bit-size and refresh rate, the same memory using different refresh rates, also uses a different number. 64, 62, 63, 65, 66, 67, 6A representative capacity; 64Mbit 28, 27, 2A representative capacity; 128Mbit 56, 55 ., 57, 5A representative capacity 256Mbit; 51 representative 512Mbit capacity. <br> <br> Articles 6, 7-bit - cable PIN number, 08 represents 8-bit data; data on behalf of 16-bit 16; 32 represents 32 bits .of data; 64 represents a 64-bit data. <br> Article 11 - the line "-".< br> <br> Sections 14, 15-bit-rate, such as a chip to 60; 70-7ns 6ns; .7B to 7.5ns (CL = 3); 7C as 7.5ns (CL = 2); 80 to 8ns; 10 10ns (66MHz). <br> <br> Know the main Digital encoded memory particles, to a memory stick is easy .to calculate its volume. For example a Samsung DDR memory, use the 18 tablets SAMSUNGK4H280838B-TCB0 granule packaging. Particle number 4 and 5-digit "28" represents the particle is 128Mbits, 6, 7-bit "08" on behalf of the .particles is 8-bit data bandwidth, so that we can compute the memory capacity is 128Mbits (trillion digits) × 16 tablets/8bits = 256MB (megabytes). <br> Note: the "bit" and "digital", "B" .or "byte", bytes in a byte is 8 bits divided by 8 when the calculation. About memory capacity calculation, challenged by the example of two situations: a non-ECC memory for every 8 pieces of 8-bit data width of the particles .can form a memory, ECC memory, 64-bit data, 8 bit ECC checksum. Through the parity-check codes that can detect memory data in two bit errors, correct an error. So in actual calculation capacity, not counting parity with ECC function .of 18 pieces of memory stick actual capacity by 16 times. At the time of purchase or accordingly judgment 18 tablets or granules 9 tablets memory chip memory is ECC memory. <br> <br> Hynix (Hyundai) modern <br> <br> .The meaning of modern memory: <br> <br> HY5DV641622AT-36 <br> HYXXXXXXXXXXXXXXXX <br> 123456789101112 <br> <br> 1. HY represents a modern product <br> <br> 2, memory chip type: (57 .= SDRAM, 5D = DDRSDRAM); <br> <br> 3. voltage: blank = 5V, V = 3.3V, U = 2.5V <br> <br> 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 <br> <br> 5. representative chip output data bits .wide: 40, 80, 16, 32, representing 4 bits, 8 bits, 16-bit and 32-bit <br> <br> BANK number: 6, 1, 2, 3, representing the 2, 4 and 8 Bank, .is the power relations 2 <br> <br> 7, I / O interfaces: 1: SSTL_3, 2: SSTL_2 <br> <br> 8, chip kernel version: can be blank or A, B, C, D, and .so the more letters, back on behalf of the newer kernel <br> <br> 9, on behalf of the power consumption: L = low power chips, blank = normal chip <br> <br> 10, memory chip package: JC .= 400milSOJ, TC = 400milTSOP-Ⅱ, TD = 13mmTSOP-Ⅱ, TG = 16mmTSOP-Ⅱ <br> <br> 11, working speed: 55: 183MHZ, 5: 200MHZ, 45: 222MHZ, 43: 233MHZ, 4: 250MHZ ., 33: 300NHZ, L: DDR200, H: DDR266B, K: DDR266A <br> <br> <br> Infineon (million constant) <br> <br> Infineon is Germany Siemens company, the current domestic market Siemens subsidiary Infineon production .memory particles only two capacity: capacity is the capacity of particles and 128Mbits to 256Mbits particles. Number of detailed lists its memory capacity, data width. Infineon memory queue management mode are each particle composed by 4 Bank. So its memory particle model less distinguished is .the easiest. <br> <br> HYB39S128400 ie 128MB/4bits, "128" logo is the particle size, last three digits identify the memory data width. Other, such as: HYB39S128800 ie 128MB/8bits; HYB39S128160 ie 128MB/16bits; .HYB39S256800 ie 256MB/8bits. <br> <br> Infineon memory particles work rate indicates that the method is the last of its type, and then with a short stop work rate. <br> <br> -7.5 - represents the memory of .the operating frequency is 133MHz; <br> -8 - represents the memory of the operating frequency is 100MHz. <br> <br> For example: <br> <br> 1 Kingston memory, Infineon's 16 tablets HYB39S128400-7.5 memory particle production .. Its capacity is calculated as: 128Mbits (trillion digits) × 16 tablets / 8 = 256MB (megabytes). <br> <br> 1 piece of memory chips, Ramaxel using Infineon's 8 tablets HYB39S128800-7.5 memory particle production. Its capacity is .calculated as: 128Mbits (trillion digits) × 8 pieces / 8 = 128MB (megabytes). <br> <br> KINGMAX, kti <br> <br> KINGMAX memory description <br> <br> Kingmax memory is encapsulated using TinyBGA ( .Tinyballgridarray). And the encapsulation mode is a patented product, so we see the granules with Kingmax produced all memory stick their production of the plant. Kingmax memory particles is available in two capacities: 64Mbits and 128Mbits. Here you can set each capacity series memory .particle model list. <br> <br> Capacity of note: <br> <br> KSVA44T4A0A - 64Mbits, 16M address space × 4-bit data width; <br> KSV884T4A0A - 64Mbits, 8M address space × 8 bit data width; .<br> KSV244T4XXX - 128Mbits, 32M address space × 4-bit data width; <br> KSV684T4XXX - 128Mbits, 16M address space × 8 bit data width; <br> KSV864T4XXX - 128Mbits, 8M address space x 16 bit data width. < .br> <br> Kingmax memory work rate has four States, is in the model after the dash symbol separates the identification work rate: memory <br> -7A--PC133/CL = 2; <br>-7 - PC133 / .CL = 3; <br> -8A--PC100/CL = 2; <br> -8--PC100/CL = 3. .<br> <br> For example a Kingmax memory stick, using 16 tablets KSV884T4A0A-7A memory particle manufacturing, its capacity is calculated as: 64Mbits (trillion digits) × 16 tablets / 8 = 128MB (megabytes). <br> <br .> Micron (micron) <br> <br> To illustrate this number MT48LC16M8A2TG-75 Micron memory encoding rules. <br> <br> Meaning: <br> <br> MT-Micron vendor name. <br> 48-memory type .. 48 representative on behalf of the DDR SDRAM; 46. <br> LC-power supply voltage. LC representative on behalf of 5V 3V; C; V representative 2.5V. <br> 16M8 - memory particle size 128Mbits, calculated as: 16M .(address) × 8 bit data width. <br> A2-memory kernel version number. <br> TG-pin packages, TG, TSOP package. <br> -75 - memory working rate, -75 that is 133MHz; -65 .ie 150MHz. <br> <br> Example: a MicronDDR memory stick with 18 tablets as particles MT46V32M4-75. The ECC memory support. Therefore, each Bank is an odd chip memory particles. <br> <br> Its capacity is calculated .as: capacity 32M × 4bit × 16 tablets / 8 = 256MB (megabytes). <br> <br> Winbond (bang) <br> <br> Description: the meaning <br> <br> WXXXXXXXX <br> 12345 <br .> <br> 1. W represents memory particle production by Winbond <br> <br> 2, the representative of the type of video memory: SDRAM, 98-94-DDRRAM <br> <br> 3, the version number of the .representative particle: a common version number is B and H; <br> <br> 4, the representative of the package, HB for TSOP package, for BGA packaging, D-LQFP package <br> <br> 5. working frequency: .0: 10ns, 100MHz; 8: 8ns, 125MHz; Z: 7.5ns, 133MHz; Y: 6.7ns, 150MHz; 6: 6ns, 166MHz; 5: 5ns, 200MHz <br> <br> <br> <br> < .br> <br> <br> <br>.