IS25WP256D-RHLE vs AS4C128M8D3LB-12BCN
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | ISSI, Integrated Silicon Solution Inc | Alliance Memory, Inc. |
| Description | IC FLSH 256MBIT SPI/QUAD 24TFBGA | IC DRAM 1GBIT PARALLEL 78FBGA |
| Package | Bulk | Tray |
| Series | - | - |
| Voltage - Supply | 1.65V ~ 1.95V | 1.283V ~ 1.45V |
| Operating Temperature | -40°C ~ 105°C (TA) | 0°C ~ 95°C (TC) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 24-TBGA | 78-VFBGA |
| Supplier Device Package | 24-TFBGA (6x8) | 78-FBGA (8x10.5) |
| Memory Size | 256Mb (32M x 8) | 1Gb (128M x 8) |
| Technology | FLASH - NOR | SDRAM - DDR3L |
| Memory Type | Non-Volatile | Volatile |
| Clock Frequency | 104 MHz | 800 MHz |
| Access Time | - | 20 ns |
| Memory Format | FLASH | DRAM |
| Write Cycle Time - Word, Page | 800µs | 15ns |
| Memory Interface | SPI - Quad I/O, QPI, DTR | Parallel |
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1. What are the main types of memory?
Common memory types include random access memory (RAM), read-only memory (ROM), flash memory, hard disk drive (HDD), and solid-state drive (SSD).
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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.
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3. 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.
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4. How to extend the life of memory devices?
Measures such as regular data backup, avoiding excessive reading and writing of memory, ensuring proper temperature control, and preventing power fluctuations can help extend the life of memory.
