Details

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BUY AT28C256-15JC https://www.utsource.net/itm/p/12404030.html

Parameter	Description	Value
Device	High-Speed CMOS 32K x 8-Bit Electrically Erasable and Reprogrammable ROM	AT28C256-15JC
Organization	Memory Organization	32K x 8
Vcc Supply Voltage	Operating Supply Voltage	4.5V to 5.5V
Access Time	Access Time at Vcc = 5.0V, Ta = 25°C	15ns
Write Cycle Time	Write Cycle Time (Typical)	5ms
Package Type	Package Style	Plastic Dual In-Line Package
Operating Temperature Range	Industrial Temperature Range (-40°C to +85°C)	-40°C to +85°C
Storage Temperature Range	Storage Temperature Range	-65°C to +150°C
Data Retention	Data Retention Time	10 years
Endurance	Write/erase Cycles	10,000 cycles

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the specified range of 4.5V to 5.5V to prevent damage to the device.

2. Programming:

   • The AT28C256-15JC can be programmed in-circuit using standard EPROM programmers.
   • A write cycle typically takes around 5ms. Ensure that the device is not accessed during a write cycle to avoid data corruption.

3. Access Time:

   • For optimal performance, ensure that the system clock or controller respects the 15ns access time when reading from the memory.

4. Temperature Considerations:

   • Operate the device within the industrial temperature range of -40°C to +85°C to maintain reliable operation.
   • Store the device in environments where temperatures do not exceed -65°C to +150°C.

5. Handling:

   • Handle with care as the device is sensitive to electrostatic discharge (ESD). Use appropriate ESD protection measures.

6. Mounting:

   • Ensure proper mounting on the PCB with adequate heat dissipation considerations, especially if operating near the upper temperature limits.

7. Data Integrity:

   • To ensure data integrity, limit the number of write/erase cycles to within the specified endurance limit of 10,000 cycles.

8. Data Retention:

   • Data retention is guaranteed for up to 10 years under recommended operating conditions. Regular backups are advised for critical data storage applications.

(For reference only)