MICROCHIP  AT28C256E-15JU  EEPROM, Parallel, 256 Kbit, 32K x 8bit, 5 MHz, LCC, 32 Pins

Technical Data Sheet (659.59KB) EN See all Technical Docs

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Product Overview

The AT28C256E-15JU is a 256k high-performance Electrically Erasable and Programmable Read-Only Memory (EEPROM) organized as 32768 words by 8-bit. Manufactured with Atmels advanced nonvolatile CMOS technology, the device offers access times to 150 ns with power dissipation of just 440mW. When the device is deselected, the CMOS standby current is less than 200µA. The AT28C256 is accessed like a static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow writing of up to 64-byte simultaneously. During a write cycle, the addresses and 1 to 64-byte of data are internally latched, freeing the address and data bus for other operations. Following the initiation of a write cycle, the device will automatically write the latched data using an internal control timer. The end of a write cycle can be detected by DATA Polling of I/O7. Once the end of a write cycle has been detected a new access for a read or write can begin.
  • Fast read access time - 150ns
  • Automatic page write operation
  • Internal control timer
  • Fast write cycle times
  • Low power dissipation
  • Hardware and software data protection
  • Data polling for end of write detection
  • High reliability CMOS technology
  • Endurance - 10⁴ or 10⁵ cycles
  • Data retention - 10 years
  • CMOS and TTL Compatible inputs and outputs
  • JEDEC Approved byte-wide pinout
  • Green product and no Sb/Br


Product Information

IC Interface Type:
Memory Size:
EEPROM Memory Configuration:
32K x 8bit
Clock Frequency:
Memory Case Style:
No. of Pins:
Supply Voltage Min:
Supply Voltage Max:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
256Kbit Parallel EEPROM
MSL 3 - 168 hours
No SVHC (17-Dec-2015)

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Legislation and Environmental

Moisture Sensitivity Level:
MSL 3 - 168 hours
Product Traceability
RoHS Compliant:
Authorized Distributor