27C256-17 vs 27C256A-20 Comparison
Detailed side-by-side comparison of 27C256-17 by Microchip Technology and 27C256A-20 by Fujitsu. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
27C256-17 - 256Kbit UV EPROM 170ns 32Kx8 | Microchip Technology
27C256-17 ObsoleteSpecification Comparison
| Parameter | 27C256-17 | 27C256A-20 |
|---|---|---|
| Brand | Microchip Technology | Fujitsu |
| Category | Memory ICs | Memory ICs |
| Lifecycle Status | Obsolete | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.00 | $8.20 |
| Memory Type | EPROM - UV (windowed) | OTP EPROM (CMOS) |
| Memory Size | 256 Kbit | 256 Kbit |
| Organization | 32K x 8 | 32K x 8 (32768 bytes) |
| Access Time | 170 ns | — |
| Interface | Parallel | — |
| Supply Voltage | 4.5 V to 5.5 V | 5 V single supply |
| Technology | CMOS | CMOS |
| Temperature Grade | Commercial | — |
| Package | CDIP-28 (windowed CERDIP, 0.6 inch) | 28-pin DIP / PLCC (per ordering code) |
| Number of Terminals | 28 | — |
| Mounting Type | Through Hole | Through Hole (DIP variant) |
| Address Lines | A0 - A14 (15) | A0 to A14 (15 lines) |
| Data Lines | 8-bit bidirectional | O0 to O7 (8-bit, tri-state) |
| Control Signals | /CE, /OE, VPP | CE, OE, PGM |
| Erase Method | Ultraviolet light (quartz window) | — |
| RoHS Status | [DATA_NEEDED: RoHS status] | [DATA_NEEDED: RoHS status] |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | [DATA_NEEDED: operating temperature range] |
| Maximum Access Time | — | 200 ns (-20 speed grade) |
| Standby Mode | — | Static standby (low-power deselect) |
| Programming Method | — | Fast single address location programming |
| Output Compatibility | — | TTL-compatible |
| Erasability | — | One-Time Programmable (no window) |