Details

---

BUY AT27C080-90DC https://www.utsource.net/itm/p/424003.html
8-Megabit 1M x 8 UV Erasable CMOS EPROM

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	Vcc	Operating	4.5	5	5.5	V
Standby Current	Icc	Vcc = 5V	-	1	5	μA
Active Current	Icc	Vcc = 5V, Reading	-	20	30	mA
Output High Level	VOH	Vcc = 5V, IOH = -250μA	2.4	-	5	V
Output Low Level	VOL	Vcc = 5V, IOL = 250μA	0	-	0.4	V
Access Time	tACC	Vcc = 5V	0	-	90	ns
Write Enable Time	tWEOH	Vcc = 5V	0	-	10	ns
Write Disable Time	tWDL	Vcc = 5V	0	-	10	ns
Chip Enable Setup Time	tCES	Vcc = 5V	0	-	10	ns
Chip Enable Hold Time	tCEH	Vcc = 5V	0	-	10	ns
Output Enable Setup Time	tOES	Vcc = 5V	0	-	10	ns
Output Enable Hold Time	tOEH	Vcc = 5V	0	-	10	ns

Instructions for Use

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the specified range of 4.5V to 5.5V.
   • Connect the Vcc pin to the power supply and GND pin to ground.

2. Current Consumption:

   • The device consumes a maximum of 5 μA in standby mode and up to 30 mA in active mode.
   • Ensure the power supply can handle these current requirements.

3. Output Levels:

   • When the output is high (VOH), it should be at least 2.4V and can go up to 5V.
   • When the output is low (VOL), it should be between 0V and 0.4V.

4. Timing Parameters:

   • Access Time (tACC): The time required for the device to access data after receiving a valid address. It should not exceed 90 ns.
   • Write Enable Time (tWEOH): The time from when the write enable signal goes high to when it is recognized. It should not exceed 10 ns.
   • Write Disable Time (tWDL): The time from when the write enable signal goes low to when it is recognized. It should not exceed 10 ns.
   • Chip Enable Setup Time (tCES): The time before the chip enable signal must be stable before the address is valid. It should not exceed 10 ns.
   • Chip Enable Hold Time (tCEH): The time the chip enable signal must remain stable after the address is valid. It should not exceed 10 ns.
   • Output Enable Setup Time (tOES): The time before the output enable signal must be stable before the address is valid. It should not exceed 10 ns.
   • Output Enable Hold Time (tOEH): The time the output enable signal must remain stable after the address is valid. It should not exceed 10 ns.

5. Handling and Storage:

   • Handle the device with care to avoid static discharge.
   • Store the device in a dry and cool environment to prevent damage.

6. Programming:

   • Follow the programming guidelines provided by the manufacturer for writing data to the device.
   • Ensure that the programming voltage and timing parameters are strictly adhered to for reliable operation.

7. Testing:

   • Test the device using the recommended test procedures to ensure it meets the specified performance criteria.

By following these instructions, you can ensure optimal performance and reliability of the AT27C080-90DC.

(For reference only)