Details
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| Parameter | Description |
|---|---|
| Device Type | 256 K-Bit (32K x 8) CMOS Electrically Erasable and Reprogrammable PROM |
| Package Type | JEDEC Standard 28-Pin Plastic Dual In-Line Package (PDIP) |
| Operating Voltage (Vcc) | 4.5V to 5.5V |
| Programming Voltage (Vpp) | 12.0V to 13.0V |
| Access Time (typ) | 150 ns |
| Endurance Cycles | 1,000,000 program/erase cycles |
| Data Retention | 20 years at 85掳C |
| Temperature Range | Commercial: 0掳C to +70掳C; Industrial: -40掳C to +85掳C |
| Organization | 32K x 8 bit organization |
| Supply Current (Vcc) | 5 mA max @ Vcc = 5.5V |
| Standby Current | 1 渭A max @ Vcc = 5.5V |
Instructions for Use:
Power Supply Requirements: Ensure the device is powered within the specified voltage range (4.5V to 5.5V). For programming, apply a higher voltage (12.0V to 13.0V) to the Vpp pin.
Programming: Follow the specific timing and control signals required for programming as detailed in the device datasheet. Each location can be programmed up to 1,000,000 times.
Erase Operation: The entire chip can be erased by exposing it to ultraviolet light for approximately 15 minutes through a quartz window on the package if available. Alternatively, use electrical erase methods as per datasheet specifications.
Data Retention: Data stored in the device will remain intact for up to 20 years at temperatures up to 85掳C.
Handling Precautions: Handle with care to avoid static damage. Use appropriate ESD protection measures when handling or soldering the device.
Environmental Conditions: Operate within the specified temperature ranges to ensure reliable performance. Use the commercial grade for environments between 0掳C and +70掳C, and industrial grade for -40掳C to +85掳C.
Pin Configuration: Refer to the pin configuration diagram provided in the datasheet for correct wiring of power, ground, data, address, and control lines.
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