Details

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BUY TMS27C64-25JL https://www.utsource.net/itm/p/672264.html
Programmable Read-Only Memory512K×8,

Parameter	Description	Value
Device Type	EPROM (Erasable Programmable Read-Only Memory)	TMS27C64-25JL
Organization	Memory organization	8K x 8 bits
Voltage - Supply (Vcc)	Supply voltage range	4.5V to 5.5V
Operating Temperature	Temperature range for operation	0°C to +70°C
Access Time	Maximum access time	25 ns
Package Type	Type of package	PLCC (Plastic Leaded Chip Carrier)
Pin Count	Number of pins	28
Programming Voltage	Voltage required for programming	12.5V ± 0.5V
Erase Method	Method used for erasing the memory	UV light (Ultra Violet)
Erase Time	Time required for full chip erase	15 minutes
Data Retention	Period data is retained without power	10 years

Instructions for Use:

1. Power Supply: Ensure the supply voltage is within the specified range (4.5V to 5.5V). Exceeding this range can damage the device.
2. Programming: Apply 12.5V ± 0.5V to the Vpp pin during programming operations. Follow the specific timing and control signal requirements as detailed in the datasheet.
3. Erase: To erase the entire chip, expose it to UV light for a minimum of 15 minutes. Ensure adequate exposure to ensure complete erasure.
4. Handling Precautions: Handle with care to avoid static discharge. Use proper ESD protection measures.
5. Storage: Store in a cool, dry place away from direct sunlight when not in use to maintain data retention integrity.

(For reference only)