Details
BUY 27C64-20 https://www.utsource.net/itm/p/12609454.html
| Parameter | Description | Value |
|---|---|---|
| Device Type | UV Erasable Programmable Read-Only Memory (EPROM) | 27C64-20 |
| Memory Size | Total Memory | 8K x 8 |
| Organization | Memory Organization | 8K x 8 bits |
| Supply Voltage (Vcc) | Operating Supply Voltage Range | 4.5V to 5.5V |
| Access Time | Maximum Access Time at 25掳C | 200 ns |
| Data Retention | Data Retention at 25掳C | 10 years |
| Programming Voltage | Programming Voltage | 12.5V 卤 0.5V |
| Erasure | Erase Time under UV Light | 15 to 30 minutes |
| Operating Temperature | Industrial Temperature Range | -40掳C to +85掳C |
| Package | Package Type | DIP-28 |
| Pins | Number of Pins | 28 |
| Pin Configuration | Pin 1: Vpp (Programming Voltage) | |
| Pin 2: A10 (Address Line 10) | ||
| Pin 3: A9 (Address Line 9) | ||
| Pin 4: A8 (Address Line 8) | ||
| Pin 5: A7 (Address Line 7) | ||
| Pin 6: A6 (Address Line 6) | ||
| Pin 7: A5 (Address Line 5) | ||
| Pin 8: A4 (Address Line 4) | ||
| Pin 9: A3 (Address Line 3) | ||
| Pin 10: A2 (Address Line 2) | ||
| Pin 11: A1 (Address Line 1) | ||
| Pin 12: A0 (Address Line 0) | ||
| Pin 13: OE (Output Enable) | ||
| Pin 14: GND (Ground) | ||
| Pin 15: D0 (Data Line 0) | ||
| Pin 16: D1 (Data Line 1) | ||
| Pin 17: D2 (Data Line 2) | ||
| Pin 18: D3 (Data Line 3) | ||
| Pin 19: D4 (Data Line 4) | ||
| Pin 20: D5 (Data Line 5) | ||
| Pin 21: D6 (Data Line 6) | ||
| Pin 22: D7 (Data Line 7) | ||
| Pin 23: CE (Chip Enable) | ||
| Pin 24: Vcc (Power Supply) | ||
| Pin 25: NC (No Connect) | ||
| Pin 26: NC (No Connect) | ||
| Pin 27: NC (No Connect) | ||
| Pin 28: NC (No Connect) |
Instructions for Use
Power Supply:
- Connect Vcc to a 5V power supply.
- Connect GND to ground.
Addressing:
- Apply the desired address to the address lines (A0-A10).
Data Output:
- Set the Output Enable (OE) low to enable data output.
- Data will be available on the data lines (D0-D7).
Chip Selection:
- Set the Chip Enable (CE) low to select the chip.
Programming:
- Apply the programming voltage (Vpp) to Pin 1.
- Follow the specific programming algorithm provided by the manufacturer.
Erasing:
- Expose the device to UV light for 15 to 30 minutes to erase the contents.
Handling:
- Handle with care to avoid static discharge.
- Store in a dry environment to prevent moisture damage.
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