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AT27C256R-12JI
Product Overview
Category
AT27C256R-12JI belongs to the category of programmable read-only memory (PROM) chips.
Use
This product is primarily used for storing and retrieving data in electronic devices. It provides non-volatile memory storage, meaning that the stored data remains even when power is removed.
Characteristics
- Non-volatile memory
- High storage capacity
- Fast access time
- Low power consumption
- Durable and reliable
Package
AT27C256R-12JI is available in a 28-pin plastic dual in-line package (PDIP).
Essence
The essence of this product lies in its ability to store large amounts of data reliably and efficiently, making it an essential component in various electronic devices.
Packaging/Quantity
AT27C256R-12JI is typically packaged in reels or tubes, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.
Specifications
- Part Number: AT27C256R-12JI
- Memory Type: PROM
- Organization: 32K x 8 bits
- Access Time: 120 ns
- Supply Voltage: 5V
- Operating Temperature Range: -40°C to +85°C
- Data Retention: 10 years
- Erase/Write Cycle Endurance: 10,000 cycles
Detailed Pin Configuration
- A15
- A12
- A7
- A6
- A5
- A4
- A3
- A2
- A1
- A0
- /OE (Output Enable)
- /WE (Write Enable)
- VSS (Ground)
- NC (No Connection)
- Q7
- Q6
- Q5
- Q4
- Q3
- Q2
- Q1
- Q0
- VCC (Supply Voltage)
- A14
- A13
- A8
- A9
- A11
Functional Features
- High-speed access: The AT27C256R-12JI offers fast access times, allowing for efficient data retrieval.
- Low power consumption: This chip is designed to consume minimal power, making it suitable for battery-powered devices.
- Durable and reliable: With a high endurance rating and long data retention period, this PROM chip ensures data integrity over an extended lifespan.
Advantages and Disadvantages
Advantages
- Large storage capacity
- Fast access time
- Low power consumption
- Reliable data retention
- Suitable for various applications
Disadvantages
- Limited write cycles
- Cannot be reprogrammed once programmed
Working Principles
The AT27C256R-12JI operates based on the principle of electrical charge trapping in a floating gate structure. During programming, a high voltage is applied to the control gates, causing electrons to tunnel through a thin oxide layer onto the floating gate. This trapped charge alters the threshold voltage, representing the stored data. During read operations, the stored charge is detected, allowing the retrieval of the programmed data.
Detailed Application Field Plans
The AT27C256R-12JI finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Employed for storing calibration data, configuration settings, and code in automotive electronic control units (ECUs). 3. Consumer electronics: Utilized in devices such as gaming consoles, set-top boxes, and home appliances for data storage purposes. 4. Industrial automation: Integrated into programmable logic controllers (PLCs) and industrial control systems for storing program code and configuration data.
Detailed and Complete Alternative Models
- AT27C512R-12JI: Similar to AT27C256R-12JI but with double the storage capacity.
- AT28C256-15PU: Electrically erasable PROM (EEPROM) with the same storage capacity and similar characteristics.
- AM27C256-150DC: UV-erasable PROM with comparable specifications and pin configuration.
These alternative models offer similar functionality and can be considered as substitutes for the AT27C256R-12JI in various applications.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AT27C256R-12JI v technických řešeních
Sure! Here are 10 common questions and answers related to the application of AT27C256R-12JI in technical solutions:
Q: What is the AT27C256R-12JI? A: The AT27C256R-12JI is a 32K x 8 low-power, high-performance CMOS EPROM (Electrically Programmable Read-Only Memory) integrated circuit.
Q: What are the key features of the AT27C256R-12JI? A: Some key features include a fast access time of 120 ns, low power consumption, wide operating voltage range, and compatibility with various programming equipment.
Q: How can I program the AT27C256R-12JI? A: The AT27C256R-12JI requires a separate EPROM programmer device that supports the programming algorithm for this specific chip. Consult the datasheet or manufacturer's documentation for programming instructions.
Q: Can the AT27C256R-12JI be reprogrammed? A: No, the AT27C256R-12JI is a one-time programmable EPROM and cannot be electrically erased or reprogrammed after initial programming.
Q: What is the maximum operating frequency of the AT27C256R-12JI? A: The AT27C256R-12JI can operate at frequencies up to 33 MHz.
Q: What is the typical power supply voltage for the AT27C256R-12JI? A: The typical power supply voltage is 5V, but it can operate within a range of 4.5V to 5.5V.
Q: Can the AT27C256R-12JI withstand high temperatures? A: Yes, the AT27C256R-12JI is designed to operate within a temperature range of -40°C to +85°C.
Q: What is the pin configuration of the AT27C256R-12JI? A: The AT27C256R-12JI has 28 pins, including address inputs, data inputs/outputs, control inputs, and power supply pins. Refer to the datasheet for the detailed pinout.
Q: Can the AT27C256R-12JI be used in battery-powered devices? A: Yes, the AT27C256R-12JI has low power consumption, making it suitable for battery-powered applications.
Q: What are some typical applications of the AT27C256R-12JI? A: The AT27C256R-12JI can be used in various applications such as microcontroller-based systems, embedded systems, industrial control systems, automotive electronics, and more where non-volatile memory storage is required.
Please note that these answers are general and may vary depending on specific requirements and use cases. Always refer to the datasheet and manufacturer's documentation for accurate information.