27C256L-20R vs 27C256A-12 Comparison
Detailed side-by-side comparison of 27C256L-20R by WaferScale Integration 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 | 27C256L-20R | 27C256A-12 |
|---|---|---|
| Brand | WaferScale Integration | NEC |
| Category | EEPROM | Memory ICs |
| Lifecycle Status | Obsolete | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.85 | $2.52 |
| Memory Size | 256 Kilobit | 256 Kbit (32K x 8) |
| Organization | 32K x 8-bit | 32K x 8 |
| Memory Type | CMOS EPROM (UV erasable) | UV EPROM |
| Access Time | 200 ns (-20 speed grade) | 120 ns |
| Supply Voltage | Single +5 V with +/-10% tolerance | — |
| Standby Current | 20 uA typical (CMOS standby) | [DATA_NEEDED: standby current] |
| Active Current | [DATA_NEEDED: active supply current] | [DATA_NEEDED: active current] |
| Programming Scheme | 100% Flashrite programming | — |
| Pinout | JEDEC-approved 28-pin pinout | — |
| Address Lines | A0 to A14 (15 lines) | — |
| Data Lines | O0 to O7 (8 lines) | — |
| Control Signals | CE, OE, PGM/VPP | — |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | 0C to +70C (commercial) |
| Package | 28-pin package (per JEDEC EPROM pinout) | 28-pin DIP |
| Mounting Type | Through-Hole | Through Hole |
| RoHS Status | [DATA_NEEDED: RoHS compliance] | unknown |
| Erase Method | Ultraviolet light (UV EPROM) | Ultraviolet light |
| Technology | — | CMOS |
| Supply Voltage (VCC) | — | 5 V |
| Programming Voltage (VPP) | — | [DATA_NEEDED: programming voltage VPP] |
| Interface | — | Parallel |
| Lifecycle Status | — | Obsolete (legacy product) |