93LC66B-I/ST vs 24LC16B-I/MS
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | Microchip Technology | Microchip Technology |
| Description | IC EEPROM 4KBIT SPI 2MHZ 8TSSOP | IC EEPROM 16KBIT I2C 8MSOP |
| Package | -Reel® | Bulk |
| Series | - | - |
| Voltage - Supply | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP (0.173\", 4.40mm Width) | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) |
| Supplier Device Package | 8-TSSOP | 8-MSOP |
| Memory Size | 4Kb (256 x 16) | 16Kb (2K x 8) |
| Technology | EEPROM | EEPROM |
| Memory Type | Non-Volatile | Non-Volatile |
| Clock Frequency | 2 MHz | 400 kHz |
| Access Time | - | 900 ns |
| Memory Format | EEPROM | EEPROM |
| Write Cycle Time - Word, Page | 6ms | 5ms |
| Memory Interface | SPI | I²C |
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1. 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.
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2. What is SSD and how to distinguish it from HDD?
SSD (Solid State Drive) is a non-volatile storage device that stores data through flash memory. It has faster read and write speeds than HDD (Hard Disk Drive), no mechanical structure, and long life, but the price is relatively higher.
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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.
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4. What is virtual memory and how does it work?
Virtual memory is a technology that uses hard disk space as memory, allowing the system to use hard disk space to expand memory when physical RAM is insufficient, improving the system's multitasking capabilities.
