PCF8570T/F5,512 vs FM25L04B-DGTR
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | NXP USA Inc. | Cypress Semiconductor Corp |
| Description | IC SRAM 2KBIT I2C 100KHZ 8SO | IC FRAM 4KBIT SPI 20MHZ 8TDFN |
| Package | Tube | Tape & Reel (TR) |
| Series | - | F-RAM™ |
| Voltage - Supply | 2.5V ~ 6V | 2.7V ~ 3.6V |
| 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-WDFN Exposed Pad |
| Supplier Device Package | 8-SO | 8-DFN (4x4.5) |
| Memory Size | 2Kb (256 x 8) | 4Kb (512 x 8) |
| Technology | SRAM | FRAM (Ferroelectric RAM) |
| Memory Type | Volatile | Non-Volatile |
| Clock Frequency | 100 kHz | 20 MHz |
| Access Time | - | - |
| Memory Format | SRAM | FRAM |
| Write Cycle Time - Word, Page | - | - |
| Memory Interface | I²C | SPI |
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1. 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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2. How to measure the data read and write speed of memory?
The read and write speed of memory is usually expressed in MB/s or GB/s, reflecting the amount of data it processes per second. The faster the speed, the higher the data transmission efficiency.
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3. 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.
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4. Why is the DRAM refresh rate important?
DRAM needs to be refreshed regularly to maintain data. The refresh rate affects the power consumption and speed of the memory. The higher the refresh rate, the faster the memory responds, but it also increases power consumption.
