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Specifications
SKU: 1156287
IC-512K CMOS EPROM
| Parameter | Description | Value |
|---|---|---|
| Device Type | High Performance CMOS UV Erasable PROM | 27C512 |
| Manufacturer | National Semiconductor | - |
| Package | 28-Pin Plastic DIP | - |
| Storage Capacity | 64K x 8 bits (512K bits) | - |
| Operating Voltage | Vcc | 4.5V to 5.5V |
| Standby Current | ICC (Typical at Vcc = 5V, Ta = 25°C) | 10 μA |
| Active Current | ICC (Typical at Vcc = 5V, Ta = 25°C, fCLK = 10 MHz) | 30 mA |
| Access Time | tAC (Typical at Vcc = 5V, Ta = 25°C, fCLK = 10 MHz) | 150 ns |
| Write Cycle Time | tWC (Typical at Vcc = 5V, Ta = 25°C) | 20 ms |
| Erase Time | tER (Typical at Vcc = 5V, Ta = 25°C) | 20 minutes |
| Programming Voltage | Vpp | 12.5V to 13.5V |
| Temperature Range | Operating Temperature (Ta) | 0°C to 70°C |
| Storage Temperature | Storage Temperature (Tstg) | -65°C to 150°C |
| Mounting Orientation | Pin 1 Location | Top Left |
Instructions for Use
Power Supply:
- Ensure that the device is powered within the specified range of 4.5V to 5.5V.
- Connect Vcc to pin 28 and GND to pin 1.
Programming:
- Apply the programming voltage (Vpp) of 12.5V to 13.5V to pin 25.
- Use a suitable programmer to write data into the memory.
- The typical write cycle time is 20 ms.
Erase:
- Expose the device to ultraviolet light for approximately 20 minutes to erase the contents.
- Ensure the device is not exposed to excessive UV light beyond the recommended time to avoid damage.
Reading Data:
- Apply the appropriate address to the address lines (A0-A15).
- The data will be available on the data lines (D0-D7) after the access time (tAC).
Standby Mode:
- To minimize power consumption, ensure that the device is in standby mode when not in use.
- The typical standby current is 10 μA.
Handling:
- Handle the device with care to avoid static discharge.
- Store the device in a dry, cool environment within the temperature range of -65°C to 150°C.
Mounting:
- Ensure that pin 1 is correctly aligned during mounting.
- Use a suitable socket or soldering technique to mount the device on the PCB.
Environmental Considerations:
- Follow all environmental guidelines and regulations for handling and disposing of the device.
Inquiry - NM27C512Q-200
