24LC128-E/MF vs 25AA128T-I/SN
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | Microchip Technology | Microchip Technology |
| Description | IC EEPROM 128KBIT I2C 8DFN | IC EEPROM 128KBIT SPI 8SOIC |
| Package | Tube | Tray |
| Series | - | - |
| Voltage - Supply | 2.5V ~ 5.5V | 1.8V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-VDFN Exposed Pad | 8-SOIC (0.154\", 3.90mm Width) |
| Supplier Device Package | 8-DFN-S (6x5) | 8-SOIC |
| Memory Size | 128Kb (16K x 8) | 128Kb (16K x 8) |
| Technology | EEPROM | EEPROM |
| Memory Type | Non-Volatile | Non-Volatile |
| Clock Frequency | 400 kHz | 10 MHz |
| Access Time | 900 ns | - |
| Memory Format | EEPROM | EEPROM |
| Write Cycle Time - Word, Page | 5ms | 5ms |
| Memory Interface | I²C | SPI |
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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 double data rate (DDR) memory?
DDR memory is a RAM technology that can transmit data at both the rising and falling edges of the clock signal to increase the data transmission speed. There are multiple generations of DDR, such as DDR3, DDR4, DDR5, etc., each generation has higher speed and capacity and lower power consumption.
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3. How to choose the right memory type?
When choosing a memory type, you need to consider speed, capacity, durability and cost according to application requirements. For example, SSD is suitable for data that needs to be accessed quickly, HDD is suitable for large-capacity data storage, and RAM is suitable for high-speed computing.
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4. 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.
