Details

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BUY AT27C512R-15PC https://www.utsource.net/itm/p/11243436.html
IC EPROM 512K PARALLEL 28DIP

Parameter	Description	Value	Unit
Device Type	Non-Volatile Memory	512 Kbit	-
Technology	CMOS EPROM	-	-
Organization	x8	64K x 8	-
Supply Voltage (Vcc)	Operating Range	4.5 to 5.5	V
Standby Current (Icc)	Typical at Vcc = 5V, TA = 25°C	1	μA
Active Current (Icc)	Typical at Vcc = 5V, TA = 25°C	30	mA
Access Time (tAC)	Typical at Vcc = 5V, TA = 25°C	15	ns
Data Retention	Minimum	10	years
Operating Temperature (TA)	Range	-40 to +85	°C
Package Type	Plastic DIP	28-pin	-
Programming Voltage (Vpp)	Required for programming	12.5 to 13.5	V
Erase Time	Typical for full chip erase	10	seconds
Write Cycle Time	Typical	5	ms
Endurance	Minimum number of write/erase cycles	100,000	cycles

Instructions:

1. Power Supply:

   • Connect Vcc to a stable 5V supply.
   • Ground all GND pins.

2. Programming:

   • Apply 12.5 to 13.5V to the Vpp pin during programming.
   • Ensure the chip is properly selected using the chip select (CS) and output enable (OE) signals.
   • Use a suitable programmer that supports the AT27C512R-15PC for writing data.

3. Erase:

   • Expose the chip to UV light for approximately 10 seconds to erase the entire chip.
   • Alternatively, use an electrical erase method if supported by the programmer.

4. Read Operation:

   • Apply a low signal to the CS pin to select the chip.
   • Apply a low signal to the OE pin to enable data output.
   • Address the desired memory location using the address lines (A0-A15).
   • Data will be available on the data lines (D0-D7).

5. Write Protection:

   • The chip does not have built-in write protection. Ensure proper handling and programming procedures to avoid accidental writes.

6. Storage:

   • Store the chip in a dry, cool environment to maintain data retention.
   • Avoid exposure to excessive humidity and temperature variations.

7. Handling:

   • Handle the chip with care to avoid static discharge.
   • Use appropriate ESD protection measures when handling the chip.

(For reference only)