AT27C256R-70PU

The AT27C256R-70PU is a high-performance, low-power, 256K-bit one-time programmable (OTP) read-only memory (ROM) chip, manufactured by Microchip Technology Inc. It offers 32,768 words of 8 bits each, providing a total storage capacity of 256 kilobits. This device is designed for operation in a range of systems where small code size and low power consumption are essential.
Key features include a fast access time of 70 nanoseconds, making it suitable for high-speed applications, and a low power standby mode, which conserves energy by reducing power consumption when the device is not actively in use. The chip operates at a voltage range of 4.5V to 5.5V, ensuring compatibility with standard 5V systems.
The AT27C256R-70PU comes in a 28-pin dual in-line package (DIP) that is easy to install in various applications. Its OTP nature means it can be programmed just once, making it ideal for permanent code storage in embedded systems, industrial applications, and other scenarios where firmware updates are rare or unnecessary.

The AT27C256R-70PU is a 256Kb CMOS EPROM chip. Equivalent products include:
1. 27C256 series by manufacturers like Microchip Technology and STMicroelectronics.
2. TMS27C256 by Texas Instruments.
3. M27C256B by STMicroelectronics.
4. AM27C256 by AMD.
These alternatives offer similar capacity and performance features and can be used as substitutes depending on the specific requirements of the application. Always confirm compatibility with your application.

The AT27C256R-70PU is a high-performance, low-power, 256K (32,768 x 8) one-time programmable (OTP) CMOS EPROM. Key features include:
1. Speed: Fast read access time of 70 nanoseconds.
2. Low Power Consumption: Designed for low power consumption with standby current of 100 µA and active read current of 29 mA.
3. Programming: Single 5V power supply for read and programming operations.
4. Data Retention: Guarantees a data retention period of over 100 years.
5. Endurance: Can be programmed reliably for at least 10,000 cycles.
6. Compatibility: JEDEC-approved pin configuration ensures compatibility with standard EPROM, EEPROM, and flash devices.
7. Package: Available in a 28-pin dual in-line package (DIP).
8. Temperature Range: Operates in a commercial temperature range from 0°C to 70°C.
These features make the AT27C256R-70PU suitable for a variety of applications where non-volatile memory is essential.

The AT27C256R-70PU is a 32K x 8 (256Kb) OTP (One-Time Programmable) EPROM. It comes in a 28-pin dual in-line package (DIP). The pin count and their functions are as follows:
- Pins 1-14, 16-22: Address Inputs (A0-A14)
- Pin 15: Chip Enable (CE) - Active low input to enable the chip.
- Pin 23: Output Enable (OE) - Active low input to enable data output.
- Pin 24: VCC - Supply voltage.
- Pins 25-27: Data Outputs (D7-D0) - Tri-state output pins.
- Pin 28: Ground (GND).
The AT27C256R offers fast read access times of 70 ns and is used for storing code or data in applications where data does not change after programming. It is widely utilized in embedded systems, microcontroller applications, and other electronic devices requiring stable, non-volatile memory storage.

The AT27C256R-70PU is manufactured by Microchip Technology Inc. Microchip Technology is a publicly traded American corporation that specializes in the production of microcontroller, mixed-signal, analog, and Flash-IP integrated circuits. The company is known for providing a wide range of semiconductor products that are used in various applications, including automotive, consumer electronics, industrial, telecommunications, and computing. Microchip Technology's products are essential for the development of embedded systems, enabling the functionality and performance of electronic devices.

The AT27C256R-70PU is a 256K (32K x 8) one-time programmable (OTP) ROM commonly used in applications requiring non-volatile memory storage. It is well-suited for embedded systems, firmware storage, and data retention tasks where data doesn't need frequent updates. Typical application areas include consumer electronics, automotive systems, industrial controls, and telecommunications equipment. Its fast access times and low power consumption make it ideal for devices that need quick data retrieval and energy efficiency. Additionally, it's used in legacy systems for code storage or as a replacement for older EPROMs. Its OTP nature is beneficial in applications where data security and integrity are critical, as data cannot be altered after programming.

The AT27C256R-70PU is a 28-pin Dual Inline Package (DIP) type. It is a CMOS EPROM (Erasable Programmable Read-Only Memory) used for non-volatile storage. The "70" refers to its access time of 70 nanoseconds, and "PU" indicates it is in a plastic package.