27C256A-20 vs 27C256A-12 对比
详细并排对比 27C256A-20 出自 Fujitsu 和 27C256A-12 出自 NEC。对比关键规格、电气参数、封装、生命周期状态、价格和供货情况，以确定最适合您设计需求的元器件。
规格对比
| 参数 | 27C256A-20 | 27C256A-12 |
|---|---|---|
| 品牌 | Fujitsu | NEC |
| 分类 | Memory ICs | Memory ICs |
| 生命周期状态 | Obsolete | Obsolete |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $8.20 | $2.52 |
| 存储容量 | 256 Kbit | 256 Kbit (32K x 8) |
| 存储组织 | 32K x 8 (32768 bytes) | 32K x 8 |
| 存储器类型 | OTP EPROM (CMOS) | UV EPROM |
| Maximum Access Time | 200 ns (-20 speed grade) | — |
| 电源电压 | 5 V single supply | — |
| Address Lines | A0 to A14 (15 lines) | — |
| Data Lines | O0 to O7 (8-bit, tri-state) | — |
| Control Signals | CE, OE, PGM | — |
| Standby Mode | Static standby (low-power deselect) | — |
| Programming Method | Fast single address location programming | — |
| Output Compatibility | TTL-compatible | — |
| Erasability | One-Time Programmable (no window) | — |
| 封装 | 28-pin DIP / PLCC (per ordering code) | 28-pin DIP |
| 安装类型 | Through Hole (DIP variant) | Through Hole |
| Technology | CMOS | CMOS |
| 工作温度 | [DATA_NEEDED: operating temperature range] | 0C to +70C (commercial) |
| RoHS 状态 | [DATA_NEEDED: RoHS status] | unknown |
| Access Time | — | 120 ns |
| Supply Voltage (VCC) | — | 5 V |
| Programming Voltage (VPP) | — | [DATA_NEEDED: programming voltage VPP] |
| 接口 | — | Parallel |
| Erase Method | — | Ultraviolet light |
| Standby Current | — | [DATA_NEEDED: standby current] |
| Active Current | — | [DATA_NEEDED: active current] |
| 生命周期状态 | — | Obsolete (legacy product) |