27C256A-12 vs 27C256L-20R 比較
詳細並排比較 27C256A-12 由 NEC 與 27C256L-20R 由 WaferScale Integration. 比較關鍵規格、電氣參數、封裝、生命週期狀態、價格與供貨情況，以找出最符合您設計需求的元件。
規格比較
| 參數 | 27C256A-12 | 27C256L-20R |
|---|---|---|
| 品牌 | NEC | WaferScale Integration |
| 類別 | Memory ICs | EEPROM |
| 生命週期狀態 | Obsolete | Obsolete |
| 記憶體類型 | UV EPROM | CMOS EPROM (UV erasable) |
| Technology | CMOS | — |
| 記憶體容量 | 256 Kbit (32K x 8) | 256 Kilobit |
| 組織 | 32K x 8 | 32K x 8-bit |
| Access Time | 120 ns | 200 ns (-20 speed grade) |
| Supply Voltage (VCC) | 5 V | — |
| Programming Voltage (VPP) | [DATA_NEEDED: programming voltage VPP] | — |
| 介面 | Parallel | — |
| 工作溫度 | 0C to +70C (commercial) | [DATA_NEEDED: operating temperature range] |
| 封裝 | 28-pin DIP | 28-pin package (per JEDEC EPROM pinout) |
| 安裝類型 | Through Hole | Through-Hole |
| Erase Method | Ultraviolet light | Ultraviolet light (UV EPROM) |
| Standby Current | [DATA_NEEDED: standby current] | 20 uA typical (CMOS standby) |
| Active Current | [DATA_NEEDED: active current] | [DATA_NEEDED: active supply current] |
| RoHS 狀態 | unknown | [DATA_NEEDED: RoHS compliance] |
| 生命週期狀態 | Obsolete (legacy product) | — |
| 供應電壓 | — | Single +5 V with +/-10% tolerance |
| 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 |