| 参数 | 数值 |
|---|---|
| Operating Voltage (Vcc) | 4.5-5.5 |
| Organization | 32K x 8 |
| Speed | 70, 90, 120 ns |
| Density | 256Kb |
| 速度 | 90ns |
| 存储器格式 | EEPROMs - Parallel |
| 接口 | Parallel |
| 存储器类型 | EEPROM |
| 存储器大小 | 256K (32K x 8) |
| 工作电压 | 4.5 V ~ 5.5 V |
| 工作温度 | -55°C ~ 125°C |
High-performance 256K EEPROM offers access times to 70ns with power dissipation of 440mW. Deselected, CMOS standby current is less than 5mA .It is accessed like static RAM for the read or write cycle without external components. It contains a 64-byte page register to allow writing of up to 64 bytes simultaneously.The EEPROM features Internal error correction for extended endurance and improved data retention. Optional software data protection mechanism guards against inadvertent writes, and an extra 64 bytes of EEPROM enables device identification or tracking.
| 序号 | 描述 | |
|---|---|---|
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AT28HC256 Complete 256K EEPROM with 64-Byte Page & Software Protection |
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EEPROM Data Protection Atmel EEPROMs use built in hardware and software features to protect against inadvertant programming due to extrnally introduced noise pulses during normal system operation and power transitions. 3 measures of hardware protection combined with software d |
| 3 |
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Programmer Support for Parallel EEPROMs |
| 4 |
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Software Chip Erase Atmel EEPROMs feature Software Chip Erase which allows erasure of the entire memory contents in one step using a 6-byte code. |
| 5 |
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Atmel System Peripheral and Memory Products Brochure |
| 6 |
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Die Products |
| 7 |
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Standard Microcircuit Drawings Product Offering |
| 8 |
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