Alternatives to Microchip Technology AT27C512R-12PC
Microchip Technology AT27C512R-12PC and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 AT27C512R-12PCMicrochip Technology | AT27C512R-70PUMicrochip Technology |  AT27C512R-45PUMicrochip Technology | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Standard JEDEC 28-pin DIP pinout is fully compatible; labeled partial due to nominal differences in PIN notation (e.g., active-low representation as '~CE' vs '/CE' and pinout descriptions).Identical 28-pin plastic DIP (PDIP) package with a 0.600" (15.24mm) row spacing.Functions identically as a 512Kbit (64K x 8) parallel OTP EPROM with standard 5V supply voltage (4.5V to 5.5V) and improved access times. | Fully pinout compatible, labeled partial due to slight variations in documentation pin names and descriptions.Identical 28-pin PDIP package footprint (0.600" width).Functions as a parallel OTP EPROM with significantly improved read access times. | ||
 AI Summary | AT27C512R-12PC by Microchip Technology: EPROM - OTP Memory IC 512Kbit Parallel 120 ns 28-PDIP. | This is the direct, manufacturer-recommended active replacement for the obsolete AT27C512R-12PC. It features the exact same package size and pin layout, but offers a faster 70 ns access time and a wider industrial temperature range.
| This active drop-in sibling from the same Microchip series offers the highest read speed available (45 ns) and an industrial temperature grade, providing an excellent upgrade for high-performance legacy systems.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | EPROM - OTP Memory IC 512Kbit Parallel 120 ns 28-PDIP | EPROM - OTP Memory IC 512Kbit Parallel 70 ns 28-PDIP | EPROM - OTP Memory IC 512Kbit Parallel 45 ns 28-PDIP | |
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | |
| Type | Memory | Memory | Memory | |
| Datasheet | Open | Open | Open | |
| Lead Time | Unknown | 8 weeks | 8 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.32.0061 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Technology | EPROM - OTP | - | - | |
| Access Time | 120 ns | - | - | |
| Memory Size | 512Kbit | - | - | |
| Memory Type | Non-Volatile | - | - | |
| Memory Format | EPROM | - | - | |
| Mounting Type | Through Hole | - | - | |
| Package / Case | 28-DIP (0.600", 15.24mm) | - | - | |
| Memory Interface | Parallel | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 AT27LV020A-12JCMicrochip Technology | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Microchip Technology AT27C512R-12PC is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Microchip Technology AT27C512R-12PC are the AT27C512R-70PU (Microchip Technology) and the AT27C512R-45PU (Microchip Technology), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the AT27C512R-12PC are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The AT27C512R-12PC (Microchip Technology) is a part in the Memory category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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