PCF8570T/F5,512 vs AT25320B-CUL-T
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | NXP USA Inc. | Microchip Technology |
| Description | IC SRAM 2KBIT I2C 100KHZ 8SO | IC EEPROM 32KBIT SPI 20MHZ 8DBGA |
| Package | Tube | Tape & Reel (TR) |
| Series | - | - |
| Voltage - Supply | 2.5V ~ 6V | 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-SOIC (0.295\", 7.50mm Width) | 8-VFBGA, DSBGA |
| Supplier Device Package | 8-SO | 8-dBGA (2.35x3.73) |
| Memory Size | 2Kb (256 x 8) | 32Kb (4K x 8) |
| Technology | SRAM | EEPROM |
| Memory Type | Volatile | Non-Volatile |
| Clock Frequency | 100 kHz | 20 MHz |
| Access Time | - | - |
| Memory Format | SRAM | EEPROM |
| Write Cycle Time - Word, Page | - | 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 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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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. What is embedded memory?
Embedded memory is a memory integrated into an electronic system for real-time data processing and program execution of the device. It is commonly found in microcontrollers, mobile devices, and embedded systems.
