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--- en:automation:02-glossary:memory-cards-source-hidden [2022/09/13 06:55]
avsetula [MLC memory cards]
+++ en:automation:02-glossary:memory-cards-source-hidden [2023/11/21 09:55] (current)
avsetula [Memory cards in Unipi products]
@@ Line 5: / Line 5: @@
 ==== pSLC memory cards ====
-This technology can be described as a combination of MLC and SLC technologies (see below). From a technical point of view, the pSLC card is an MLC-type card whose memory cells emulate the SLC architecture by using only two outer logic states. That gives them up to five times the lifespan of MLC cards at the cost of reduced memory capacity while reducing the cost by up to 50% compared to SLC cards. On Unipi e-shop, the pSLC architecture is represented by the **Swissbit S-46u** card with 4GB capacity.
+This technology can be described as a combination of MLC and SLC technologies (see below). From a technical point of view, the pSLC card is an MLC-type card whose memory cells emulate the SLC architecture by using only two outer logic states. That gives them up to five times the lifespan of MLC cards at the cost of reduced memory capacity while reducing the cost by up to 50% compared to SLC cards.
-== 4GB Swissbit S-46u pSLC memory card with an extended lifespan ==
-<WRAP group>
-<WRAP half column>
-{{:files:pslc_karta.jpg?175|}}
-</WRAP>
-<WRAP half column>
-**Parameters**
-  * memory capacity: 4 GB
-  * operating temperature: -25/+85°C
-  * read performance: 46 MB/s
-  * write performance: 41 MB/s
-  * lifespan: up to 20 000 rewrites
-  * an option to approximate the remaining lifespan
-  * [[https://www.unipi.technology/4gb-pslc-pametova-karta-swissbit-s-46u-s-prodlouzenou-zivotnosti-p393|display on Unipi e-shop]]
-</WRAP>
-</WRAP>
 ==== MLC memory cards ====
-In MLC cards, each memory cell can have more logic states as it can contain two or more data bits. As a result, MLC cards can offer significantly higher memory capacity for a lower price. On the other hand, memory blocks are sensitive to memory cell wear, resulting in a lifespan of around 3000 rewrites. After the expiration of this lifespan, it is strongly recommended to replace the card with a new one. Among products offered by Unipi, the MLC architecture is represented by the **Kingston SDC10G2** 16GB card.
+In MLC cards, each memory cell can have more logic states as it can contain two or more data bits. As a result, MLC cards can offer significantly higher memory capacity for a lower price. On the other hand, memory blocks are sensitive to memory cell wear, resulting in a lifespan of around 3000 rewrites. After the expiration of this lifespan, it is strongly recommended to replace the card with a new one.
-== 16GB Kingston SDC10G2 MLC memory card ==
-<WRAP group>
-<WRAP half column>
-{{:files:mlc_karta.jpg?220|}}
-</WRAP>
-<WRAP half column>
-**Parameters**
-  * memory capacity: 16 GB
-  * operating temperature: -25/+85°C
-  * write performance: min. 10 MB/s
-  * read performance: 45 MB/s
-  * lifespan: up to 3000 rewrites
-  * [[https://www.unipi.technology/16gb-microsd-card-more-variants-p494|display on Unipi e-shop]]
-</WRAP>
-</WRAP>
 ==== SLC memory cards ====
-Memory cells of SLC cards can store only a single data bit and can have only two logic states (0/1). That reduces the memory capacity and increases the cost of SLC cards, but both of these disadvantages are compensated by significantly increased lifespan in the range of tens of thousands rewrites and an extended operating temperature range. On Unipi e-shop, the SLC architecture is represented by the **Apacer industrial microSD 1 2GB card**.
+Memory cells of SLC cards can store only a single data bit and can have only two logic states (0/1). That reduces the memory capacity and increases the cost of SLC cards, but both of these disadvantages are compensated by significantly increased lifespan in the range of tens of thousands rewrites and an extended operating temperature range.
-== 2GB Apacer Industrial microSD 1 SLC memory card ==
-<WRAP group>
-<WRAP half column>
-{{:files:industry-karta.png?200|}}
-</WRAP>
-<WRAP half column>
-**Parameters**
-  * memory capacity: 2 GB
-  * operating temperature: -40/+85°C
-  * write performance: max. 43 MB/s
-  * read performance: max. 41 MB/s
-  * lifespan: up to 60 000 rewrites
-  * an option to approximate the remaining lifespa
-  * [[https://www.unipi.technology/2gb-prumyslova-microsd-pametova-karta-slc-p232|display on Unipi e-shop]]
-</WRAP>
-</WRAP>
 ===== Why is the choice of a suitable memory card important? =====
@@ Line 74: / Line 25: @@
 ===== Can be memory card lifespan monitored? =====
-Most available pSLC and SLC cards (including the Swissbit S-64u card on the Unipi e-shop) provide operating data that can be used to approximate the remaining lifespan. This allows you to replace a worn-out card in advance, preventing any data corruption or data loss. An upcoming article will elaborate on this functionality further. Typical MLC cards do not feature such functionality. However, their lifespan (and the lifespan of units as well) can be notably prolonged by following a couple of simple tips.
+Most available pSLC and SLC cards provide operating data that can be used to approximate the remaining lifespan. This allows you to replace a worn-out card in advance, preventing any data corruption or data loss. An upcoming article will elaborate on this functionality further. Typical MLC cards do not feature such functionality. However, their lifespan (and the lifespan of units as well) can be notably prolonged by following a couple of simple tips.
-  * in case of a need for frequent memory rewrites, use a cloud database or local NAS storage instead. For development and prototyping, you can also use an external SSD drive connected to the unit via USB ports. In this case, the memory card serves only as operating system storage.
+  * in case of a need for frequent memory rewrites, use a cloud database or local NAS storage instead. For development and prototyping, you can also use an external SSD drive connected to the unit via USB ports. In this case, the memory card serves only as operating system storage
   * do not place the unit in an environment with high or low temperatures, make sure there are no power
-  * fluctuations or outages.
+  * fluctuations or outages
 ===== Memory cards in Unipi products =====
-The memory card models listed above can be purchased either as standalone products or as a part of the package:
+SLC, pSLC and MLC memory cards can be purchased either as a [[https://www.unipi.technology/memory-cards-c33|standalone product in our e-shop]] or as part of a package:
-  ***[[https://www.unipi.technology/neuron-c2|Unipi Neuron line:]]** memory cards are an optional part of the package,
+  ***[[https://www.unipi.technology/neuron-c2|Unipi Neuron line:]]** memory cards are an optional part of the package
-  ***Unipi 1.1/Unipi 1.1 Lite**: memory card is included in the [[https://www.unipi.technology/unipi-1-1-zakladni-set-p122|Unipi 1.1 starter set]] and the [[https://www.unipi.technology/unipi-1-1-kompletni-sada-p123|Unipi 1.1]] and [[https://www.unipi.technology/unipi-1-1-lite-kompletni-sada-p169|Unipi 1.1 Lite]] complete sets,
+  ***Unipi 1.1/Unipi 1.1 Lite**: memory card is included in the [[https://www.unipi.technology/unipi-1-1-kompletni-sada-p123|Unipi 1.1]] and [[https://www.unipi.technology/unipi-1-1-lite-kompletni-sada-p169|Unipi 1.1 Lite]] complete sets
-  ***[[https://www.unipi.technology/patron-c44|Unipi Patron line:]]**: memory cards are not required, the units feature an onboard memory.
+  ***[[https://www.unipi.technology/patron-c44|Unipi Patron line:]]**: memory cards are not required, the units feature an onboard memory