Details

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BUY AT29C040A-15TC https://www.utsource.net/itm/p/582154.html
4-Megabit 512K x 8 5-volt Only 256-Byte Sector CMOS Flash Memory

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	Vcc	Operating	4.5	-	5.5	V
Standby Current	Icc	Vcc = 5V, Unselected	-	1.0	-	μA
Active Current	Icc	Vcc = 5V, Reading	-	35	-	mA
Write Cycle Time	tWC	Vpp = 12.5V, Ta = 0°C to 70°C	-	2.0	-	s
Erase Cycle Time	tEC	Vpp = 12.5V, Ta = 0°C to 70°C	-	5.0	-	s
Data Retention		Vcc = 0V, Ta = 25°C	-	10	-	years
Operating Temperature	Ta		-40	-	85	°C
Storage Temperature	Tstg		-65	-	150	°C
Output High Voltage	VOH	IOL = -1mA, Vcc = 5V	2.4	-	Vcc	V
Output Low Voltage	VOL	IOH = 1mA, Vcc = 5V	0	-	0.4	V
Input Leakage Current	IIH, IIL	Vcc = 5V, Vin = 0 to Vcc	-1	-	1	μA

Instructions for Using AT29C040A-15TC

1. Power Supply:

   • Ensure that the supply voltage (Vcc) is within the range of 4.5V to 5.5V.
   • The programming voltage (Vpp) should be set to 12.5V during write and erase operations.

2. Current Consumption:

   • During standby, the current consumption should not exceed 1.0 μA.
   • During active read operations, the current consumption can reach up to 35 mA.

3. Write and Erase Cycles:

   • A single write cycle takes approximately 2 seconds.
   • An erase cycle, which erases the entire chip, takes approximately 5 seconds.

4. Data Retention:

   • The device retains data for at least 10 years when powered off and stored at 25°C.

5. Temperature Ranges:

   • The operating temperature range is from -40°C to 85°C.
   • The storage temperature range is from -65°C to 150°C.

6. Output Voltage Levels:

   • When the output is high (VOH), it should be at least 2.4V or as high as Vcc.
   • When the output is low (VOL), it should be no more than 0.4V.

7. Input Leakage Current:

   • The input leakage current (IIH, IIL) should be between -1 μA and 1 μA.

8. Handling and Storage:

   • Handle the device with care to avoid electrostatic discharge (ESD).
   • Store the device in a dry environment to prevent moisture damage.

By following these parameters and instructions, you can ensure reliable operation and longevity of the AT29C040A-15TC.

(For reference only)