AT27BV1024 is a high-performance, low-power, low-voltage 1,048,576-bit one-time programmable read-only memory (OTP EPROM) organized as 64K by 16 bits. It requires only one supply in the range of 2.7V to 3.6V in normal read mode operation. The by-16 organization makes this part ideal for portable and handheld 16- and 32-bit microprocessor based systems using either regulated or unregulated battery power. Atmel’s innovative design techniques provide fast speeds that rival 5V parts while keeping the low power consumption of a 3V supply. At VCC = 2.7V, any word can be accessed in less than 120 ns. With a typical power dissipation of only 18 mW at 5MHz and VCC = 3V, the AT27BV1024 consumes less than one fifth the power of a standard 5V EPROM. Standby mode supply current is less than 1µA.
The AT27BV1024 is a 1,048,576‑bit one‑time programmable EPROM organized as 64K × 16 bits. It operates from a single supply of 2.7 V to 3.6 V and offers low‑power CMOS performance, making it suitable for portable and handheld microprocessor systems.
The document lists detailed electrical characteristics, pin assignments for 44‑lead PLCC and 40‑lead VSOP packages, programming algorithms, timing diagrams, and mechanical dimensions. It also includes system‑level recommendations such as decoupling capacitors for stable operation.
| Memory size | 1,048,576 bits (64K × 16) |
|---|---|
| Supply voltage range | 2.7 V – 3.6 V (standard 5 V + 10 % also supported) |
| Active power consumption | 18 mW at 5 MHz, V oc = 3 V |
| Operating temperature (industrial) | -40 °C – 85 °C |
| Package types | 44‑lead PLCC, 40‑lead VSOP |
It operates from 2.7 V to 3.6 V, and it also supports a standard 5 V ± 10 % supply range.
Typical active power consumption is 18 mW at 5 MHz with a supply voltage of 3 V.
The device is offered in a 44‑lead PLCC package and a 40‑lead VSOP (thin‑small‑outline) package.