IS25LQ040B-JBLE vs 24LC08B-I/MS
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | ISSI, Integrated Silicon Solution Inc | Microchip Technology |
| Description | IC FLASH 4MBIT SPI/QUAD 8SOIC | IC EEPROM 8KBIT I2C 400KHZ 8MSOP |
| Package | -Reel® | -Reel® |
| Series | - | - |
| Voltage - Supply | 2.3V ~ 3.6V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 105°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.209\", 5.30mm Width) | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) |
| Supplier Device Package | 8-SOIC | 8-MSOP |
| Memory Size | 4Mb (512K x 8) | 8Kb (256 x 8 x 4) |
| Technology | FLASH - NOR | EEPROM |
| Memory Type | Non-Volatile | Non-Volatile |
| Clock Frequency | 104 MHz | 400 kHz |
| Access Time | - | 900 ns |
| Memory Format | FLASH | EEPROM |
| Write Cycle Time - Word, Page | 800µs | 5ms |
| Memory Interface | SPI - Quad I/O | I²C |
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1. What is the difference between RAM and ROM?
RAM is volatile storage and is used to temporarily store data; while ROM is non-volatile storage, which can still save data after the device is turned off, and is usually used to store unchangeable data such as system startup programs.
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2. What is the memory hierarchy in a computer?
The computer memory hierarchy includes registers, cache, main memory (RAM), secondary storage (such as HDD or SSD), and external storage (such as tape, optical disk) from speed to capacity, and each level has different storage and access speeds.
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3. How to upgrade the computer's memory?
Computer storage performance can usually be improved by adding RAM modules or upgrading the HDD to a faster SSD. It is also necessary to ensure that the new hardware is compatible with the system, especially motherboard support and memory type.
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4. What is High Bandwidth Memory (HBM) and what are its advantages?
HBM is a high-bandwidth, low-latency memory technology commonly used in graphics cards and AI accelerators that can handle a large number of parallel computing tasks. HBM's stacked architecture makes it take up less space and more efficient, making it an ideal choice for big data and high-performance computing applications.
