• 256-Kbit (32-Kbit x 8)
• Dual voltage range operation
• Low voltage, 3.0V to 3.6V, or
• Standard power supply range, 5V +/-10%
• Low-power CMOS operation
• 20 µA max standby (less than 1 µA, typical) for VCC = 3.6V
• 29 mW max active at 5 MHz for VCC = 3.6V
• Parallel Interface
• 90 ns access time
• High-reliability CMOS technology
• 2,000V ESD protection
• 200 mA latchup immunity
• Rapid programming algorithm – 100 µs/byte (typical)
• CMOS and TTL compatible inputs and outputs
• JEDEC standard for LVTTL
• Integrated product identification code
• Industrial Temperature Range: -40°C to 85°C
• Available in Green (Pb/Halide-free) Packaging Only
• 32-lead, Plastic J-leaded Chip Carrier (PLCC)

The Microchip AT27LV256A is a high-performance, low-power, low-voltage 256-Kbit One Time Programmable EPROM organized as 32-Kbit x 8. Requiring a single power supply in the range of 3.0V to 3.6V in normal read mode operation any byte can be accessed in less than 90 ns. Typical power consumption of only 18 mW at 5 MHz and VCC = 3.3V, the AT27LV256A consumes less than one-fifth the power of a standard, 5V EPROM. Standby mode supply current is typically less than 1 μA at 3.3V making it ideal for fast, portable systems using battery power.