Memory

Part Number	Description / PDF	Quantity
70V631S10BC Renesas Electronics America	IC SRAM 4.5MBIT PAR 256CABGA	0
71V416S12PHG Renesas Electronics America	IC SRAM 4MBIT PARALLEL 44TSOP II	202
UPD44325094BF5-E33-FQ1-A Renesas Electronics America	QDR SRAM, 4MX9, 0.45NS	73
71V65703S80BQG8 Renesas Electronics America	IC SRAM 9MBIT PARALLEL 165CABGA	0
71T75802S166PFG Renesas Electronics America	IC SRAM 18MBIT PARALLEL 100TQFP	181
R1LP0408DSB-5SR#B0 Renesas Electronics America	IC SRAM 4MBIT PARALLEL 32TSOP II	1350
7140SA35CB Renesas Electronics America	IC SRAM 8KBIT PARALLEL SB48	0
71V67703S85BG Renesas Electronics America	IC SRAM 9MBIT PARALLEL 119PBGA	0
71V416S12YG Renesas Electronics America	IC SRAM 4MBIT PARALLEL 44SOJ	0
71V3556SA100BQGI Renesas Electronics America	IC SRAM 4.5MBIT PAR 165CABGA	0
71V65603S150BQG8 Renesas Electronics America	IC SRAM 9MBIT PARALLEL 165CABGA	0
71V416S10BE8 Renesas Electronics America	IC SRAM 4MBIT PARALLEL 48CABGA	0
71T75802S133BG8 Renesas Electronics America	IC SRAM 18MBIT PARALLEL 119PBGA	0
71V65703S75BGG8 Renesas Electronics America	IC SRAM 9MBIT PARALLEL 119PBGA	0
70T631S15BF8 Renesas Electronics America	IC SRAM 4.5MBIT PAR 208CABGA	0
71V35761SA166BGGI Renesas Electronics America	IC SRAM 4.5MBIT PARALLEL 119PBGA	0
70V631S10PRFG Renesas Electronics America	IC SRAM 4.5MBIT PARALLEL 128TQFP	0
6116SA25SOGI Renesas Electronics America	IC SRAM 16KBIT PARALLEL 24SOIC	807
7132LA35C Renesas Electronics America	IC SRAM 16KBIT PARALLEL SB48	0
71V424L15PHGI8 Renesas Electronics America	IC SRAM 4MBIT PARALLEL 44TSOP II	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)