27C512-20 vs 27C256A-12 Comparison
Detailed side-by-side comparison of 27C512-20 by Fujitsu and 27C256A-12 by NEC. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | 27C512-20 | 27C256A-12 |
|---|---|---|
| Brand | Fujitsu | NEC |
| Category | Memory ICs | Memory ICs |
| Lifecycle Status | Obsolete | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.10 | $2.52 |
| Memory Type | UV EPROM | UV EPROM |
| Technology | CMOS | CMOS |
| Density | 512 Kbit (524,288 bits) | — |
| Organization | 64K x 8 | 32K x 8 |
| Maximum Access Time | 200 ns | — |
| Supply Voltage (VCC) | 5 V | 5 V |
| Outputs | 3-state | — |
| Operation | Asynchronous | — |
| Package | CQCC32 / LCC32 (ceramic, UV window) | 28-pin DIP |
| Mounting Type | Surface Mount | Through Hole |
| Erase Method | Ultraviolet light | Ultraviolet light |
| Interface | Parallel | Parallel |
| Word Size | 8 bit | — |
| Address Count | 65,536 words | — |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | 0C to +70C (commercial) |
| Standby Current | [DATA_NEEDED: standby current] | [DATA_NEEDED: standby current] |
| Programming Voltage (VPP) | [DATA_NEEDED: VPP voltage] | [DATA_NEEDED: programming voltage VPP] |
| Memory Size | — | 256 Kbit (32K x 8) |
| Access Time | — | 120 ns |
| Active Current | — | [DATA_NEEDED: active current] |
| RoHS Status | — | unknown |
| Lifecycle Status | — | Obsolete (legacy product) |