Memory

Part Number	Description / PDF	Quantity
TMS4030JL Texas Instruments	DRAM, 4KX1, 300NS	109
SMJ61CD16LA-45JDM Texas Instruments	STANDARD SRAM, 16KX1	350
SMJ64C16L-35JDM Texas Instruments	STANDARD SRAM, 16KX1	1329
TMS4C1050B-40SD Texas Instruments	262 264-WORD BY 4 BIT FIELD MEMO	313
SMJ27C512-45JM Texas Instruments	512K (64KX8) UV ERASABLE PROM	709
SMJ68CE16S-45JDM Texas Instruments	DUAL MARKED (8403609LA)	2206
SMJ61CD64L-45JDM Texas Instruments	DUAL MARKED (5962-8601504XA)	1725
SMJ64C16L-55JDM Texas Instruments	STANDARD SRAM, 16KX1	576
TMS6287-45N Texas Instruments	STANDARD SRAM, 128KX8, 85NS, PDI	81198
SMJ68CE16L-35JDM Texas Instruments	DUAL MARKED (5962-887400ILA)	381
SMJ61CD16LA-25JDM Texas Instruments	STANDARD SRAM, 16KX1	243
SMJ61CD16LA-35JDM Texas Instruments	STANDARD SRAM, 16KX1	195
SMJ68CE16S-35JDM Texas Instruments	STANDARD SRAM, 2KX8, CMOS	1095
SMJ64C16S-55JDM Texas Instruments	STANDARD SRAM, 16KX1	616
SMJ68CE16S-25JDM Texas Instruments	STANDARD SRAM, 2KX8, CMOS	281
SN74AS870DWR Texas Instruments	DUAL-PORT SRAM, 16X4, 15NS, TTL	1000
SMJ64C16L-70JDM Texas Instruments	DUAL MARKED (5962-8670510RA)	682
MPSTIBPAL22V10/15 Texas Instruments	ELECTRICALLY ERASABLE PAL DEVICE	749
SMJ64C16L-45JDM Texas Instruments	STANDARD SRAM, 16KX1	982
TMS4C1070B-30N Texas Instruments	262 264-WORD BY 4 BIT FIELD MEMO	793

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)