AT27C080-15RC Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip AT27C080 is an 8-Megabit UV-erasable EPROM organized as 1M x 8 bits with a 150 ns maximum access time in a compact SOIC package. Key specs include 5 V supply, CMOS-compatible outputs, and low active current. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- AT27C080-15RC Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of AT27C080-15RC?
- 8-Megabit (1M x 8) storage capacity enabling large firmware and lookup-table storage in legacy systems
- 150 ns maximum access time allowing direct interface with 6 MHz to 8 MHz bus systems without wait states
- UV-erasable and reprogrammable design supporting iterative firmware development and field prototyping
- CMOS-compatible outputs operating at 5 V supply for seamless integration with TTL and CMOS logic families
- Low standby current consumption extending battery life in low-duty-cycle embedded systems
What is AT27C080-15RC used for?
The AT27C080-15RC is used in legacy industrial controllers, BIOS replacement modules, and embedded systems requiring non-volatile code storage with 8-Megabit capacity and standard parallel bus access. Its UV-erasable nature makes it valuable for prototyping, firmware development, and small-volume production runs where flash-based alternatives are unavailable or cost-prohibitive. It is also a direct replacement component in repair and maintenance of existing equipment that originally specified EPROM storage in SOIC packages.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the AT27C080-15RC datasheet?
AT27C080-15RC Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for AT27C080-15RC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the access time of the AT27C080-15RC and which bus speeds can it support without wait states?
The AT27C080-15RC has a maximum access time of 150 ns, which allows direct operation with processor buses running at approximately 6 MHz to 8 MHz without requiring wait-state insertion. Faster bus designs exceeding those speeds would need the -12 or -10 speed-grade variants with 120 ns or 100 ns access times respectively.
How is the AT27C080-15RC organized internally, and what address and data bus widths are required to interface it?
The AT27C080 is organized as 1M x 8 bits, requiring a 20-bit address bus and an 8-bit data bus for full access. This 8-Megabit total capacity equates to 1 MB of byte-addressable storage, covering typical firmware images, font tables, and code overlays in microprocessor-based systems.
For which legacy repair and prototyping scenarios is the AT27C080-15RC a suitable EPROM choice over flash memory?
The AT27C080-15RC is the correct choice when replacing worn or corrupted EPROMs in legacy industrial PLCs, CNC controllers, and arcade board ROMs that use parallel bus interfaces and cannot be modified to support serial flash protocols such as SPI. Its UV-erase capability also suits iterative firmware development where programming and erasing cycles occur frequently during testing before committing to a one-time-programmable OTP ROM.
What voltage levels are required to program and erase the AT27C080-15RC, and what equipment is needed?
Programming the AT27C080-15RC requires a 12.75 V programming voltage applied to the VPP pin, while normal read operations use a standard 5 V VCC supply. Erasing requires exposure to UV light at approximately 253.7 nm wavelength for 15 to 20 minutes using a UV eraser lamp, after which the device can be reprogrammed with a compatible gang or device programmer.
How does the AT27C080-15RC compare to AT27C040 for applications requiring more storage capacity in the same footprint?
The AT27C080-15RC offers 8 Megabits (1M x 8) of storage versus 4 Megabits (512K x 8) in the AT27C040, doubling available program space within a comparable SOIC package form factor. When firmware size exceeds 512 KB or a combined code-and-data image requires more than 4 Mbit storage, the AT27C080 is the natural upgrade path without changing the PCB footprint or bus interface design.
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