Details

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BUY NMC27C64Q200 https://www.utsource.net/itm/p/11722251.html
IC EPROM 64K PARALLEL 28CDIP

Parameter	Description	Value	Unit
Device Type	Non-Volatile Memory	27C64	-
Manufacturer	National Semiconductor	-	-
Package	DIP-28, PLCC-32	-	-
Memory Size	Memory Capacity	64 K x 8	bits
Operating Voltage (Vcc)	Supply Voltage Range	4.5 to 5.5	V
Standby Current (Icc)	Power Consumption in Standby Mode	10	μA
Active Current (Icc)	Power Consumption in Active Mode	100	mA
Access Time (tAA)	Access Time	125	ns
Data Retention	Data Retention Time	10	years
Operating Temperature Range	Operating Temperature	-40 to +85	°C
Storage Temperature Range	Storage Temperature	-65 to +150	°C
Write Protection	Write Protect Pin	WP	-
Pin Configuration	Pin Count	28 (DIP), 32 (PLCC)	-

Instructions for Use

1. Power Supply:

   • Ensure that the supply voltage (Vcc) is within the specified range of 4.5 to 5.5V.
   • Connect the ground (GND) pin to a stable ground reference.

2. Pin Connections:

   • Vcc: Connect to the positive power supply.
   • GND: Connect to the ground.
   • A0-A12: Address lines. These pins are used to select the memory location.
   • D0-D7: Data lines. These pins are used for data input and output.
   • OE (Output Enable): Active low. When low, the device outputs data.
   • CE (Chip Enable): Active low. When low, the device is selected.
   • WE (Write Enable): Active low. When low, the device writes data (if not write-protected).
   • WP (Write Protect): Active high. When high, writing to the device is inhibited.

3. Write Operation:

   • Set the address lines (A0-A12) to the desired memory location.
   • Set the data lines (D0-D7) to the data to be written.
   • Set CE and OE to high.
   • Set WE to low to initiate the write operation.
   • Return WE to high to complete the write operation.

4. Read Operation:

   • Set the address lines (A0-A12) to the desired memory location.
   • Set CE to low to select the device.
   • Set OE to low to enable data output.
   • Read the data from the data lines (D0-D7).

5. Write Protection:

   • To prevent accidental writes, set the WP pin to high. This will inhibit any write operations.

6. Temperature Considerations:

   • Ensure that the operating temperature is within the range of -40°C to +85°C.
   • Store the device in an environment with temperatures between -65°C and +150°C.

7. Handling Precautions:

   • Handle the device with care to avoid static damage.
   • Follow proper soldering techniques to avoid thermal stress.

8. Data Retention:

   • The device retains data for up to 10 years under normal operating conditions.

By following these instructions, you can ensure reliable and efficient operation of the NMC27C64Q200 non-volatile memory device.

(For reference only)