EMMC5.1 128GB Ultra Wide-Temperature EMMC 64GB 256GB -55℃ To 105℃, Specialized For Rail Transit Extreme Environments
High-performance eMMC 5.1 storage solutions engineered specifically for demanding rail transit applications, featuring ultra-wide temperature operation from -55℃ to 105℃ with capacities of 64GB, 128GB, and 256GB.
CB EMMC5.1 Specification
| Model |
G2864GTLCB |
G28128TLCB |
G28256TLCB |
| NAND flash |
3DTLC NAND |
3DTLC NAND |
3DTLC NAND |
| Capacity |
64GB |
128GB |
256GB |
| CE |
1 |
2 |
4 |
| Read speed |
up to 330MB/s |
up to 330MB/s |
up to 330MB/s |
| Write speed |
up to 240MB/s |
up to 240MB/s |
up to 240MB/s |
| Operating temperature |
-25℃~85℃ |
-25℃~85℃ |
-25℃~85℃ |
| EP |
≥3000 |
≥3000 |
≥3000 |
| Packaging specification |
BGA 153 |
BGA 153 |
BGA 153 |
| Size |
11.5mmx13mmx1.0mm |
11.5mmx13mmx1.0mm |
11.5mmx13mmx1.2mm |
Core Architecture of eMMC - Integrated Design of "Controller + Flash Memory"
The eMMC module architecture combines sophisticated hardware and firmware design, featuring three core components: MMC controller, NAND flash memory chip, packaging substrate, and interface. Each element performs specialized functions to ensure reliable storage operation in demanding environments.
Core Brain: MMC Controller
The MMC controller serves as the command center of eMMC, processing host storage commands, managing NAND flash read/write operations, addressing flash memory physical defects, and providing data encryption and cache management capabilities.
Key Controller Functions:
- Protocol Conversion: Translates standardized MMC interface commands from the host into NAND flash operations (page read/write, block erase), enabling seamless communication between host and flash memory.
- Bad Block Management: Pre-detects and marks defective storage units using firmware algorithms, replacing bad blocks with redundant spare blocks to ensure data storage reliability.
- Wear Leveling: Distributes data evenly across the entire flash memory to prevent localized wear and extend eMMC service life.
- Data Cache and Error Correction: Features built-in SRAM cache for improved read/write speeds and integrated ECC (Error Checking and Correction) to ensure data integrity during transmission and storage.
- Security Encryption: Supports advanced encryption protocols including AES-256 to protect stored data and meet stringent information security requirements for industrial applications.
