Details

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BUY FM27C512Q120 https://www.utsource.net/itm/p/1809009.html
524,288-Bit (64K x 8) High Performance CMOS EPROM

Parameter	Symbol	Min	Typical	Max	Unit	Description
Supply Voltage	Vcc	4.5	5.0	5.5	V	Operating supply voltage
Standby Current	Icc	-	10	20	μA	Supply current in standby mode (Vcc = 5V)
Active Current	Icc	20	50	80	mA	Supply current during read/write operations (Vcc = 5V)
Output High Level	VOH	2.4	3.5	Vcc-0.4	V	Output high level voltage (IOL = 0.4mA, Vcc = 5V)
Output Low Level	VOL	0	0.4	0.5	V	Output low level voltage (IOH = -0.8mA, Vcc = 5V)
Access Time	tACC	0	70	90	ns	Access time from CE# low to valid output data (Vcc = 5V, TA = 25°C)
Write Cycle Time	tWC	8	10	12	μs	Time required for a complete write cycle (Vcc = 5V, TA = 25°C)
Data Hold Time	tDH	0	15	25	ns	Data hold time after WE# low (Vcc = 5V, TA = 25°C)
Address Setup Time	tAS	0	15	25	ns	Address setup time before CE# low (Vcc = 5V, TA = 25°C)
Address Hold Time	tAH	0	15	25	ns	Address hold time after CE# low (Vcc = 5V, TA = 25°C)
Chip Enable Pulse Width	tCEP	50	100	150	ns	Minimum pulse width for CE# (Vcc = 5V, TA = 25°C)
Write Enable Pulse Width	tWEP	50	100	150	ns	Minimum pulse width for WE# (Vcc = 5V, TA = 25°C)
Output Enable Pulse Width	tOEP	50	100	150	ns	Minimum pulse width for OE# (Vcc = 5V, TA = 25°C)
Output Disable Time	tOHZ	0	25	45	ns	Time for outputs to go high-Z after OE# high (Vcc = 5V, TA = 25°C)
Data Valid Time	tDV	0	15	25	ns	Time for valid data after CE# low (Vcc = 5V, TA = 25°C)

Instructions:

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the specified range (4.5V to 5.5V).
   • Use a stable power supply to avoid voltage fluctuations that could affect the operation of the FM27C512Q120.

2. Pin Configuration:

   • Vcc: Connect to the positive supply voltage.
   • GND: Connect to the ground.
   • CE# (Chip Enable): Active low signal to enable the device. When high, the device is in standby mode.
   • OE# (Output Enable): Active low signal to enable the output drivers. When high, the outputs are in high-impedance state.
   • WE# (Write Enable): Active low signal to initiate a write operation. Must be pulsed low for the duration of the write cycle.
   • A0-A18: Address lines for selecting the memory location.
   • D0-D7: Data lines for reading from or writing to the selected memory location.

3. Read Operation:

   • Set the address lines (A0-A18) to the desired memory location.
   • Pull CE# low to enable the device.
   • Pull OE# low to enable the output drivers.
   • Data will be available on the data lines (D0-D7) after the access time (tACC).

4. Write Operation:

   • Set the address lines (A0-A18) to the desired memory location.
   • Set the data lines (D0-D7) to the data to be written.
   • Pull CE# low to enable the device.
   • Pull WE# low to start the write cycle.
   • Maintain WE# low for at least the write cycle time (tWC).
   • Release WE# to complete the write operation.

5. Standby Mode:

   • To enter standby mode, pull CE# high. This reduces power consumption.

6. Timing Considerations:

   • Ensure all timing parameters are met to guarantee reliable operation. Pay particular attention to setup and hold times for address and data lines, as well as pulse widths for control signals.

7. Environmental Conditions:

   • The device is designed to operate within a temperature range of -40°C to +85°C. Ensure the operating environment is within these limits to avoid damage or reduced performance.

8. Handling Precautions:

   • Handle the device with care to avoid static discharge, which can damage the internal circuits.
   • Use proper ESD protection when handling and storing the device.

By following these instructions and adhering to the specified parameters, you can ensure optimal performance and reliability of the FM27C512Q120.

(For reference only)