IS62WV5128EBLL-45BLI vs W949D2DBJX5E
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | ISSI, Integrated Silicon Solution Inc | Winbond Electronics |
| Description | IC SRAM 4MBIT PARALLEL 36TFBGA | IC DRAM 512MBIT PARALLEL 90VFBGA |
| Package | Cut Tape (CT) | Cut Tape (CT) |
| Series | - | - |
| Voltage - Supply | 2.2V ~ 3.6V | 1.7V ~ 1.95V |
| Operating Temperature | -40°C ~ 85°C (TA) | -25°C ~ 85°C (TC) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 36-TFBGA | 90-TFBGA |
| Supplier Device Package | 36-TFBGA (6x8) | 90-VFBGA (8x13) |
| Memory Size | 4Mb (512K x 8) | 512Mb (16M x 32) |
| Technology | SRAM - Asynchronous | SDRAM - Mobile LPDDR |
| Memory Type | Volatile | Volatile |
| Clock Frequency | - | 200 MHz |
| Access Time | 45 ns | 5 ns |
| Memory Format | SRAM | DRAM |
| Write Cycle Time - Word, Page | 45ns | 15ns |
| Memory Interface | Parallel | Parallel |
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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 SSD and how to distinguish it from HDD?
SSD (Solid State Drive) is a non-volatile storage device that stores data through flash memory. It has faster read and write speeds than HDD (Hard Disk Drive), no mechanical structure, and long life, but the price is relatively higher.
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4. 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.
