AT28C256E-15DM Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
The AT28C256E is a 256 Kbit (32K x 8) CMOS parallel EEPROM with 150ns access time in a DIP package. It features byte-wise and page-write modes with data polling, hardware write protection, and 5V operation for reliable non-volatile data storage. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- AT28C256E-15DM Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of AT28C256E-15DM?
- 256 Kbit (32K x 8) parallel EEPROM with 150ns access time
- Page-write mode supporting up to 64 bytes per write cycle
- Hardware write protection for data security
- 5V single-supply operation with CMOS low-power design
- DIP package for breadboard-compatible prototyping and legacy system use
What is AT28C256E-15DM used for?
The AT28C256E is used in embedded systems requiring reliable non-volatile byte-addressable data storage, such as parameter tables, configuration memory, and firmware storage in legacy microcontroller-based designs. Its 150ns access time and parallel interface make it compatible with a wide range of 8-bit and 16-bit processor bus architectures in industrial controllers, communication equipment, and instrumentation.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the AT28C256E-15DM datasheet?
AT28C256E-15DM Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for AT28C256E-15DM?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How fast can the AT28C256E-15DM respond to a read access, and does it require wait states?
The AT28C256E-15DM has a maximum access time of 150ns, which means it operates without wait states in most 8-bit microprocessor systems running at or below 6 MHz. For faster processors, 1 or more wait states may be required depending on the bus clock period, making this device compatible with a wide range of embedded system designs.
What is the storage capacity of AT28C256E and how is it organized?
The AT28C256E provides 256 Kbits of storage organized as 32K x 8 bits, meaning 32,768 individually addressable byte locations. This 256 Kbit density is sufficient for storing configuration tables, lookup data, and small firmware images in 8-bit embedded systems, with each byte independently readable and writable.
In which legacy and industrial designs is the AT28C256E DIP package particularly useful?
The AT28C256E in DIP package is particularly valuable in legacy industrial PLCs, retrofit upgrades, and educational prototyping boards where through-hole components are preferred or required. The DIP footprint allows socket mounting, making it easy to swap or reprogram the EEPROM in field-maintenance scenarios without specialized SMD rework equipment, supporting systems that operate from a 5V supply rail.
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