AT28C64E-20JI

Product Overview

Category

AT28C64E-20JI belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used for non-volatile storage in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile: The data stored in AT28C64E-20JI remains intact even when power is removed.
• Electrically erasable: The memory can be erased and reprogrammed electronically, eliminating the need for physical removal or replacement.
• High capacity: AT28C64E-20JI has a storage capacity of 64 kilobits (8 kilobytes).
• Low power consumption: This chip operates at low power levels, making it suitable for battery-powered devices.
• Fast access time: With a maximum access time of 200 nanoseconds, it provides quick data retrieval.

Package

AT28C64E-20JI is available in a 32-pin plastic J-leaded chip carrier (PLCC) package.

Essence

The essence of AT28C64E-20JI lies in its ability to store and retrieve data reliably, while offering flexibility for reprogramming as needed.

Packaging/Quantity

This product is typically packaged in reels or tubes, with quantities varying depending on customer requirements.

Specifications

• Supply voltage: 2.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Maximum clock frequency: 20 MHz
• Endurance: 10,000 write/erase cycles
• Data retention: 10 years

Pin Configuration

The pin configuration of AT28C64E-20JI is as follows:

___________ | | A14|1 32|VCC A12|2 31|A13 A7 |3 30|A8 A6 |4 29|A9 A5 |5 28|A11 A4 |6 27|A10 A3 |7 26|OE# A2 |8 25|CE# A1 |9 24|WE# A0 |10 23|I/O0 I/O7|11 22|I/O1 I/O6|12 21|I/O2 I/O5|13 20|I/O3 I/O4|14 19|I/O4 GND|15 18|NC |___________|

Functional Features

• Byte-wise programmable: AT28C64E-20JI allows individual bytes to be programmed or erased, providing flexibility in data manipulation.
• Hardware and software protection: This chip offers various protection mechanisms to prevent accidental writes or unauthorized access.
• Automatic page write: It supports the efficient programming of multiple bytes within a single page.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity even during power loss.
• Electrically erasable capability eliminates the need for physical removal or replacement.
• High capacity allows for storing significant amounts of data.
• Low power consumption extends battery life in portable devices.
• Fast access time enables quick retrieval of stored information.

Disadvantages

• Limited endurance: The number of write/erase cycles is limited to 10,000.
• Relatively small storage capacity compared to other memory technologies.

Working Principles

AT28C64E-20JI utilizes a floating-gate transistor structure to store data. The memory cells consist of a floating gate and a control gate, which control the flow of electrons in the transistor. When programming or erasing, voltage levels are applied to these gates, modifying the charge stored in the floating gate and thus altering the cell's state.

Detailed Application Field Plans

AT28C64E-20JI finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Computer systems: Employed as non-volatile memory for storing BIOS settings and configuration data. 3. Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for data storage purposes. 4. Automotive industry: Utilized in electronic control units (ECUs) for storing calibration data and vehicle parameters.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AT28C64E-20JI include: - AT28C256-15PU - 24LC64-I/P - M93C66-WMN6TP

These alternatives provide comparable features and can be considered based on specific application