Details

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BUY M27C256B12F1 https://www.utsource.net/itm/p/12611383.html

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	VCC	Operating	4.5	-	5.5	V
Standby Current	ICC(STBY)	VCC = 5V, All Outputs High	-	50	100	渭A
Active Current	ICC(ACTIVE)	VCC = 5V, All Outputs High	-	20	40	mA
Output High Voltage	VOH	IO = -1mA, VCC = 5V	2.4	-	5.0	V
Output Low Voltage	VOL	IO = 16mA, VCC = 5V	0	-	0.5	V
Access Time	tAA	VCC = 5V, VIL = 0.8V, VIH = 2.0V	70	-	-	ns
Address Setup Time	tAS	VCC = 5V, VIL = 0.8V, VIH = 2.0V	25	-	-	ns
Address Hold Time	tAH	VCC = 5V, VIL = 0.8V, VIH = 2.0V	0	-	-	ns
Output Enable Setup Time	tOE	VCC = 5V, VIL = 0.8V, VIH = 2.0V	25	-	-	ns
Output Enable Hold Time	tOH	VCC = 5V, VIL = 0.8V, VIH = 2.0V	0	-	-	ns
Chip Enable Setup Time	tCS	VCC = 5V, VIL = 0.8V, VIH = 2.0V	25	-	-	ns
Chip Enable Hold Time	tCH	VCC = 5V, VIL = 0.8V, VIH = 2.0V	0	-	-	ns

Instructions for Using M27C256B12F1

1. Power Supply:

   • Connect the V_CC pin to a 4.5V to 5.5V power supply.
   • Connect the GND pin to ground.

2. Addressing:

   • Apply the desired address to the address lines (A0-A17) to select the memory location.
   • Ensure that the address setup time (t_AS) is met before the rising edge of the chip enable (CE) signal.

3. Chip Enable (CE):

   • Set CE low to enable the device for read operations.
   • The chip enable hold time (t_CH) must be maintained after the address is stable.

4. Output Enable (OE):

   • Set OE low to enable the output drivers and allow data to be read from the selected memory location.
   • The output enable setup time (t_OE) must be met before the rising edge of the chip enable (CE) signal.

5. Data Output:

   • Data will be available on the data output lines (D0-D7) after the access time (t_AA).
   • Ensure that the output enable hold time (t_OH) is maintained to keep the data valid.

6. Standby Mode:

   • To enter standby mode, set both CE and OE high. This will minimize power consumption.

7. Timing Considerations:

   • Ensure all timing parameters (setup and hold times) are met to avoid data corruption or incorrect operation.
   • Use appropriate pull-up resistors on the output lines if driving high-impedance loads.

8. Storage and Handling:

   • Store the device in a dry, static-free environment.
   • Handle with care to avoid damage to the pins and internal components.

By following these instructions, you can ensure reliable and efficient operation of the M27C256B12F1 EEPROM.

(For reference only)