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*The following are the basic parameters of the product, involving the characteristics of the product and its category
| TYPE | DESCRIPTION |
|---|---|
| Part Status | Active |
| Command User Interface | NO |
| RoHS Status | ROHS3 Compliant |
| Mounting Type | Surface Mount |
| Mount | Surface Mount |
| Number of Functions | 1 |
| Pbfree Code | yes |
| Radiation Hardening | No |
| Data Polling | YES |
| Toggle Bit | YES |
| JESD-609 Code | e3 |
| Lead Free | Lead Free |
| Contact Plating | Tin |
| Memory Width | 8 |
| Supply Voltage | 5V |
| Operating Supply Voltage | 5V |
| Power Supplies | 5V |
| Programming Voltage | 5V |
| Factory Lead Time | 8 Weeks |
| Packaging | Tube |
| Technology | CMOS |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Terminal Pitch | 1.27mm |
| Number of Pins | 32 |
| Number of Terminations | 32 |
| Terminal Position | QUAD |
| Memory Interface | Parallel |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| Voltage – Supply | 4.5V~5.5V |
| Published | 1997 |
| Memory Type | Non-Volatile |
| Output Characteristics | 3-STATE |
| Peak Reflow Temperature (Cel) | 245 |
| Nominal Supply Current | 80mA |
| Memory Format | EEPROM |
| Width | 11.43mm |
| Write Cycle Time – Word, Page | 10ms |
| Access Time | 120ns |
| Frequency | 5MHz |
| Write Cycle Time-Max (tWC) | 10 ms |
| Length | 13.97mm |
| Operating Temperature | -40°C~85°C TC |
| Memory Size | 256Kb 32K x 8 |
| Height Seated (Max) | 3.556mm |
| Package / Case | 32-LCC (J-Lead) |
| Density | 256 kb |
| Screening Level | MIL-STD-883 |
| Standby Current-Max | 0.0003A |
| Endurance | 10000 Write/Erase Cycles |
| Page Size | 64words |
| Base Part Number | AT28HC256 |
| Additional Feature | AUTOMATIC WRITE |
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