IS25LQ040B-JBLE vs 25C320-I/SN
| Part Number |
|
|
| Category | General Memory | General Memory |
| Manufacturer | ISSI, Integrated Silicon Solution Inc | Microchip Technology |
| Description | IC FLASH 4MBIT SPI/QUAD 8SOIC | IC EEPROM 32KBIT SPI 3MHZ 8SOIC |
| Package | -Reel® | -Reel® |
| Series | - | - |
| Voltage - Supply | 2.3V ~ 3.6V | 4.5V ~ 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-SOIC (0.154\", 3.90mm Width) |
| Supplier Device Package | 8-SOIC | 8-SOIC |
| Memory Size | 4Mb (512K x 8) | 32Kb (4K x 8) |
| Technology | FLASH - NOR | EEPROM |
| Memory Type | Non-Volatile | Non-Volatile |
| Clock Frequency | 104 MHz | 3 MHz |
| Access Time | - | - |
| Memory Format | FLASH | EEPROM |
| Write Cycle Time - Word, Page | 800µs | 5ms |
| Memory Interface | SPI - Quad I/O | SPI |
-
1. Is there a relationship between the capacity and speed of memory?
The capacity and speed of memory are not directly related. The capacity refers to the amount of data that the memory can hold, while the speed determines the speed at which the memory reads and writes data. Generally speaking, faster memory such as RAM has a smaller capacity, while large-capacity storage such as HDD is relatively slow.
-
2. What are volatile and non-volatile memory?
Volatile memory loses data when power is off, such as RAM; non-volatile memory retains data after power is off, such as ROM and flash memory.
-
3. What is the difference between SRAM and DRAM?
SRAM (static RAM) does not require periodic refreshes and is faster but more expensive; DRAM (dynamic RAM) requires periodic refreshes and has a higher storage density and is suitable for main memory.
-
4. How to extend the life of memory devices?
Measures such as regular data backup, avoiding excessive reading and writing of memory, ensuring proper temperature control, and preventing power fluctuations can help extend the life of memory.
