PCF8570T/F5,512 vs M25P32-VMP6G
| Part Number |
|
|
| Category | General Memory | General Memory |
| Manufacturer | NXP USA Inc. | Micron Technology Inc. |
| Description | IC SRAM 2KBIT I2C 100KHZ 8SO | IC FLSH 32MBIT SPI 75MHZ 8VFQFPN |
| Package | Tube | Tray |
| Series | - | - |
| 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-VDFN Exposed Pad |
| Supplier Device Package | 8-SO | 8-VFQFPN (6x5) |
| Memory Size | 2Kb (256 x 8) | 32Mb (4M x 8) |
| Technology | SRAM | FLASH - NOR |
| Memory Type | Volatile | Non-Volatile |
| Clock Frequency | 100 kHz | 75 MHz |
| Access Time | - | - |
| Memory Format | SRAM | FLASH |
| Write Cycle Time - Word, Page | - | 15ms, 5ms |
| Memory Interface | I²C | SPI |
-
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.
-
2. What is the difference between cache and RAM?
Cache is a high-speed memory between the CPU and the main memory, which is used to temporarily store data and instructions commonly used by the CPU to speed up the system. RAM is the main storage of the system, which is used to store data for applications and operating systems.
-
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.
-
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.
