93LC66B-I/ST vs BR93L66F-WE2
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | Microchip Technology | Rohm Semiconductor |
| Description | IC EEPROM 4KBIT SPI 2MHZ 8TSSOP | IC EEPROM 4KBIT SPI 2MHZ 8SOP |
| Package | -Reel® | Tape & Reel (TR) |
| Series | - | - |
| Voltage - Supply | 2.5V ~ 5.5V | 1.8V ~ 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-SOIC (0.173\", 4.40mm Width) |
| Supplier Device Package | 8-TSSOP | 8-SOP |
| Memory Size | 4Kb (256 x 16) | 4Kb (256 x 16) |
| Technology | EEPROM | EEPROM |
| Memory Type | Non-Volatile | Non-Volatile |
| Clock Frequency | 2 MHz | 2 MHz |
| Access Time | - | - |
| Memory Format | EEPROM | EEPROM |
| Write Cycle Time - Word, Page | 6ms | 5ms |
| Memory Interface | SPI | SPI |
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1. What is memory and what does it do?
Memory is a computer component that stores data and instructions. It can be temporary (volatile storage) or permanent (non-volatile storage) and is used to support system operation and data storage.
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2. 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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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 ECC memory?
ECC (error correction code) memory detects and corrects single-bit errors in stored data, improving the reliability of memory and is commonly used in servers and data centers.
