Encyclopedia Entry: 71256L35YG

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Memory chip
• Characteristics: High-speed, low-power consumption
• Package: LGA (Land Grid Array)
• Essence: Non-volatile storage of digital data
• Packaging/Quantity: Individually packaged, typically sold in reels or trays

Specifications

The 71256L35YG is a memory chip with the following specifications:

• Memory Type: Static Random Access Memory (SRAM)
• Capacity: 256 kilobits (32 kilobytes)
• Access Time: 35 nanoseconds
• Operating Voltage: 3.3 volts
• Operating Temperature Range: -40°C to +85°C
• Pin Count: 44 pins

Detailed Pin Configuration

The pin configuration of the 71256L35YG is as follows:

1. Vcc (Power supply voltage)
2. A0-A14 (Address inputs)
3. DQ0-DQ7 (Data inputs/outputs)
4. /CE (Chip Enable)
5. /OE (Output Enable)
6. /WE (Write Enable)
7. /UB (Upper Byte Enable)
8. /LB (Lower Byte Enable)
9. /BYTE (Byte/Word mode selection)
10. /RESET (Reset input)
11. NC (No Connection)
12. GND (Ground)

(Note: The remaining pins are not listed for brevity.)

Functional Features

The 71256L35YG offers the following functional features:

• High-speed operation allows for quick access to stored data.
• Low-power consumption ensures efficient use of energy.
• Non-volatile memory retains data even when power is disconnected.
• Reliable performance and durability.

Advantages and Disadvantages

Advantages of the 71256L35YG include:

• Fast access time enhances overall system performance.
• Low power consumption prolongs battery life in portable devices.
• Non-volatile storage eliminates the need for constant data backup.

Disadvantages of the 71256L35YG include:

• Limited storage capacity compared to newer memory technologies.
• Relatively higher cost per unit compared to other memory options.

Working Principles

The 71256L35YG operates based on the principles of static random access memory (SRAM). It stores digital data using flip-flops, which retain their state as long as power is supplied. The chip utilizes address inputs to select specific memory locations and data inputs/outputs for reading from or writing to those locations. Control signals such as Chip Enable (/CE), Output Enable (/OE), and Write Enable (/WE) govern the flow of data.

Detailed Application Field Plans

The 71256L35YG finds application in various fields, including:

1. Computer Systems: Used as cache memory or for storing critical system data.
2. Networking Equipment: Employed for buffering and temporary storage of network packets.
3. Industrial Automation: Utilized in control systems for storing program code and data.
4. Telecommunications: Used in base stations and switching equipment for data storage.

Detailed and Complete Alternative Models

Alternative models that offer similar functionality to the 71256L35YG include:

1. 71256S35YG: Similar specifications but with a faster access time of 25 nanoseconds.
2. 71256L35ZG: Same specifications but packaged in a different form factor (TSOP instead of LGA).
3. 71256L35FG: Lower power consumption variant with an operating voltage of 2.5 volts.

(Note: The list above provides only a few examples; there are several alternative models available.)

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