Encyclopedia Entry: 71V65903S85PFGI

Product Information Overview

Category: Integrated Circuit (IC)

Use: The 71V65903S85PFGI is a high-performance synchronous dynamic random-access memory (SDRAM) IC. It is commonly used in various electronic devices and systems that require fast and reliable data storage and retrieval.

Characteristics: - High-speed operation - Large storage capacity - Low power consumption - Synchronous interface - Multiple banks for efficient data access

Package: The 71V65903S85PFGI is available in a compact and durable plastic package, which ensures protection against external factors such as moisture and physical damage. The package type is typically a Ball Grid Array (BGA).

Essence: This IC serves as a crucial component in modern electronic devices, enabling efficient and reliable data storage and retrieval operations.

Packaging/Quantity: The 71V65903S85PFGI is usually sold in reels or trays, containing multiple units per package. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Type: Synchronous DRAM (SDRAM)
• Organization: 8 Meg x 16
• Voltage Supply: 3.3V
• Clock Frequency: Up to 133 MHz
• Access Time: 5.4 ns
• Operating Temperature Range: -40°C to +85°C
• Package Type: BGA

Detailed Pin Configuration

The 71V65903S85PFGI features a specific pin configuration that facilitates its integration into electronic systems. The following table provides a detailed overview of the pin functions:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | VDD | Power Supply (3.3V) | | 2 | VDDQ | Power Supply for I/O Buffers (3.3V) | | 3 | DQ0 | Data Input/Output Bit 0 | | 4 | DQ1 | Data Input/Output Bit 1 | | ... | ... | ... | | 48 | DQ15 | Data Input/Output Bit 15 | | 49 | /CS | Chip Select | | 50 | /RAS | Row Address Strobe | | 51 | /CAS | Column Address Strobe | | 52 | /WE | Write Enable | | ... | ... | ... | | 66 | CLK | Clock Input | | 67 | VSS | Ground |

Functional Features

The 71V65903S85PFGI offers several functional features that enhance its performance and usability:

• High-speed operation: The IC supports clock frequencies of up to 133 MHz, enabling fast data access and transfer.
• Synchronous interface: The synchronous design ensures precise timing synchronization between the memory controller and the IC, improving overall system performance.
• Multiple banks: The presence of multiple banks allows concurrent access to different memory locations, enhancing data retrieval efficiency.
• Low power consumption: The IC incorporates power-saving mechanisms, reducing energy consumption during idle periods.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data processing. - Large storage capacity accommodates extensive data requirements. - Low power consumption contributes to energy efficiency. - Synchronous interface improves system performance. - Multiple banks allow for efficient data access.

Disadvantages: - Limited compatibility with older systems that do not support SDRAM technology. - Relatively higher cost compared to alternative memory solutions.

Working Principles

The 71V65903S85PFGI operates based on the principles of synchronous dynamic random-access memory (SDRAM). It stores data in a matrix of capacitors, with each capacitor representing a single bit. The IC utilizes clock signals to synchronize data transfer between the memory controller and the IC.

During read operations, the memory controller sends row and column addresses to the IC, which activates the corresponding memory cell. The stored data is then accessed and transferred to the memory controller for further processing. Write operations follow a similar process, where the memory controller provides the address and data to be written into the specified memory location.

Detailed Application Field Plans

The 71V65903S85PFGI finds applications in various electronic devices and systems that require high-speed and reliable data storage capabilities. Some common application fields include:

1. Personal Computers (PCs) and Laptops: The IC serves as the main memory module in PCs and laptops, providing fast and efficient data storage for running applications and storing files.
2. Networking Equipment: It is used in routers, switches, and other networking devices to store routing tables, packet buffers, and other critical data.
3. Telecommunications Systems