Key facts
- Brand
- Atmel
- Model
- AT27C020
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-05
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ATMEL 2-megabit (256K x 8) OTP EPROM AT27C020 handbook
The AT27C020 is a low-power, high-performance, 2,097,152-bit, one-time programmable read-only memory (OTP EPROM) organized as 256K by 8 bits. It requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 55 ns, eliminating the need for speed-reducing WAIT states on high-performance microprocessor systems. In read mode, the AT27C020 typically consumes 8 mA. Standby mode supply current is typically less than 10 µA. The AT27C020 is available in a choice of industry-standard JEDEC-approved one-time programmable (OTP) plastic PDIP, PLCC and TSOP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. With 256K bytes storage capability, the AT27C020 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. Atmel’s AT27C020 has additional features to ensure high quality and efficient production.
Read onlineAtmel AT27C020 specifications
| Read Access Time | 55 ns |
|---|---|
| Standby Current | 100 pA max |
| Active Current (5 MHz) | 25 mA |
| Supply Voltage | 5 V ±10% |
| ESD Protection | 2 kV |
| Latch‑up Immunity | 200 mA |
| Programming Speed | 100 ps/byte (typical) |
| Storage Temperature | -65 °C to +150 °C |
| Package Options | 32‑lead PDIP, PLCC, TSOP |
All Atmel AT27C020 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the read access time of the AT27C020?
The device provides a read access time of 55 ns.
What supply voltage does the AT27C020 require?
It operates from a 5 V supply with a tolerance of ±10 %.