Details

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BUY UPD28C64ACZ-15 https://www.utsource.net/itm/p/1403938.html
x8 EEPROM

Parameter	Description	Value	Unit
Device Type	Programmable Logic Device	UPD28C64ACZ-15
Package Type	PLCC	20-Pin
Operating Voltage	Supply Voltage	3.3	V
Operating Current	Supply Current	10	mA
Memory Capacity	EEPROM	64 K bits
Configuration	Configuration Method	Serial Peripheral Interface
Programming Voltage	Programming Supply Voltage	12.75	V
Programming Time	Maximum Programming Time per Byte	10	ms
Erase Time	Typical Erase Time	5	s
Operating Temperature	Industrial Temperature Range	-40 to +85	掳C
Storage Temperature	Storage Temperature Range	-65 to +150	掳C

Instructions:

1. Power Supply Requirements: Ensure the supply voltage is set to 3.3V for stable operation.
2. Programming Setup: Use a serial peripheral interface (SPI) for configuring the device. The programming voltage should be set to 12.75V.
3. Handling Precautions: Handle with care to avoid damage from electrostatic discharge (ESD). Store in recommended temperature ranges.
4. Operating Environment: Operate within the industrial temperature range (-40掳C to +85掳C) for reliable performance.
5. Memory Management: For optimal performance, do not exceed the maximum programming time of 10ms per byte and ensure typical erase times are around 5 seconds.
6. Package Handling: Due to the PLCC 20-pin package, use appropriate tools and techniques for soldering and desoldering to prevent damage to pins or the chip.

(For reference only)