Memory

Part Number	Description / PDF	Quantity
IS61DDB41M18A-250M3L ISSI (Integrated Silicon Solution, Inc.)	IC SRAM 18MBIT PARALLEL 165LFBGA	0
IS61QDPB21M18A-333M3L ISSI (Integrated Silicon Solution, Inc.)	IC SRAM 18MBIT PARALLEL 165LFBGA	0
IS43R16320F-5TLI ISSI (Integrated Silicon Solution, Inc.)	IC DRAM 512MBIT PAR 66TSOP II	0
IS43TR81024B-125KBLI ISSI (Integrated Silicon Solution, Inc.)	IC DRAM 8GBIT PARALLEL 78TWBGA	271
IS25WP128-JLLE ISSI (Integrated Silicon Solution, Inc.)	IC FLASH 128MBIT SPI/QUAD 8WSON	947
IS25LP032D-JBLE-TR ISSI (Integrated Silicon Solution, Inc.)	IC FLASH 32MBIT SPI/QUAD 8SOP	958
IS25WP080D-JNLE ISSI (Integrated Silicon Solution, Inc.)	IC FLASH 8MBIT SPI/QUAD 8SOIC	1382
IS46R86400D-6TLA1 ISSI (Integrated Silicon Solution, Inc.)	IC DRAM 512MBIT PAR 66TSOP II	0
IS42VM16320E-6BLI-TR ISSI (Integrated Silicon Solution, Inc.)	IC DRAM 512MBIT PARALLEL 54TFBGA	0
IS62WVS2568FBLL-20NLI-TR ISSI (Integrated Silicon Solution, Inc.)	IC SRAM 2MBIT SPI/QUAD I/O 8SOIC	0
IS43R32800D-6BL ISSI (Integrated Silicon Solution, Inc.)	IC DRAM 256MBIT PAR 144LFBGA	0
IS42SM32400H-75BLI-TR ISSI (Integrated Silicon Solution, Inc.)	IC DRAM 128MBIT PARALLEL 90TFBGA	0
IS62WV102416BLL-25TLI-TR ISSI (Integrated Silicon Solution, Inc.)	IC SRAM 16MBIT PARALLEL 48TSOP I	0
IS42RM32160E-75BLI-TR ISSI (Integrated Silicon Solution, Inc.)	IC DRAM 512MBIT PARALLEL 90TFBGA	0
IS61WV51232BLL-10BLI-TR ISSI (Integrated Silicon Solution, Inc.)	IC SRAM 16MBIT PARALLEL 90TFBGA	0
IS29GL064-70TLEB ISSI (Integrated Silicon Solution, Inc.)	IC FLASH 64MBIT PAR 48TSOP I	120
IS29GL128-70FLET ISSI (Integrated Silicon Solution, Inc.)	IC FLASH 128MBIT PAR 64LFBGA	750
IS62WV20488FBLL-45BLI ISSI (Integrated Silicon Solution, Inc.)	IC SRAM 16MBIT PARALLEL 48VFBGA	0
IS29GL256-70FLEB ISSI (Integrated Silicon Solution, Inc.)	IC FLASH 256MBIT PAR 64LFBGA	144
IS61NVF51236B-6.5TQL-TR ISSI (Integrated Silicon Solution, Inc.)	IC SRAM 18MBIT PARALLEL 100LQFP	0

Memory

1. Overview

Memory integrated circuits (ICs) are semiconductor devices used for storing digital data in electronic systems. As fundamental components of modern electronics, they enable data retention and retrieval in computers, mobile devices, industrial equipment, and automotive systems. Memory ICs are categorized into volatile (requires power to retain data) and non-volatile (retains data without power) types, playing critical roles in system performance, storage capacity, and energy efficiency.

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
DRAM (Dynamic RAM)	High-density, low-cost, requires periodic refresh	PCs, Servers, Graphics Cards
NAND Flash	Non-volatile, high endurance, block-level access	SSDs, USB Drives, Mobile Storage
SRAM (Static RAM)	High-speed, low density, no refresh required	Cache Memory, Networking Equipment
NOR Flash	Random access, execute-in-place capability	Embedded Systems, Automotive ECUs
MRAM (Magnetoresistive RAM)	Non-volatile, unlimited endurance, low power	IoT Devices, Industrial Sensors

3. Structure and Composition

Memory ICs typically consist of:

Storage Cell Array: Matrix of memory cells (transistors/capacitors for DRAM, floating-gate transistors for Flash)
Address Decoder: Selects specific memory locations
I/O Circuits: Data input/output interfaces
Control Logic: Manages read/write operations and timing
Power Management Units: Optimizes energy consumption

Advanced packages include BGA (Ball Grid Array) and 3D-stacked configurations for density optimization.

4. Key Technical Specifications

Parameter	Description	Importance
Storage Capacity	Data volume (Gb/GiB)	Determines system memory limits
Access Time	ns/predictable latency	Impacts processing speed
Power Consumption	mW/MHz	Affects battery life and thermal design
Endurance	P/E cycles (Flash)	Dictates product lifespan
Data Retention	Years (non-volatile)	Critical for long-term storage

5. Application Areas

Consumer Electronics: Smartphones (NAND Flash), Gaming Consoles (GDDR6)
Industrial Automation: PLCs (SRAM), Data Loggers (MRAM)
Automotive Systems: ADAS (LPDDR5), Infotainment (eMMC)
Enterprise Storage: SSD Controllers (3D NAND), Servers (RDIMM)

6. Leading Manufacturers and Products

Manufacturer	Representative Products
Samsung Electronics	V-NAND (9x-layer), LPDDR5X
SK hynix	HBM3 (8GB/s bandwidth), GDDR6
Microchip Technology	Serial NOR Flash (SST26)
Kioxia Corporation	BiCS FLASH (3D NAND)
Infineon Technologies	MRAM (40nm process)

7. Selection Recommendations

Key considerations:

Match memory type to application requirements (e.g., NOR Flash for code storage)
Evaluate bandwidth vs. latency tradeoffs
Analyze temperature and vibration specifications
Assess long-term supply stability
Optimize cost-per-bit metrics

Case Study: A smartphone manufacturer selected UFS 3.1 (NAND-based) for 2100MB/s read speeds, improving app launch times by 35%.

8. Industry Trends

Future directions include:

3D NAND scaling beyond 200 layers
Emerging memories (ReRAM, PCM) for AI acceleration
Package-on-Package (PoP) integration
AI-optimized memory architectures (Processing-in-Memory)
Green manufacturing processes (EUV lithography)