• 1-Mbit (64-Kbit x 16)
• Dual voltage range operation
• Unregulated battery power supply range, 2.7V to 3.6V, or
• Standard power supply range, 5V +/-10%
• Parallel Interface
• 90 ns access time
• Pin compatible with Microchip AT27C1024
• Low-power CMOS operation
• 20 µA max standby (less than 1 µA, typical) for VCC = 3.6V
• 36 mW max active at 5 MHz for VCC = 3.6V
• High-reliability CMOS technology
• 2,000V ESD protection
• 200 mA latchup immunity
• Rapid programming algorithm – 100 µs/word (typical)
• CMOS and TTL compatible inputs and outputs
• JEDEC standard for LVTTL and LVBO
• Integrated product identification code
• Industrial Temperature Range: -40°C to 85°C
• Available in Green (Pb/Halide-free) Packaging Only
• 44-lead, Plastic J-leaded Chip Carrier (PLCC)

The Microchip AT27BV1024 is a high-performance, low-power, Battery-Voltage 1-megabit One Time Programmable EPROM organized as 64-Kbit x 16. Requiring a single power supply in the range of 2.7V to 3.6V; any word can be accessed in less than 90 ns. With typical power consumption of only 18 mW at 5 MHz and VCC = 3V, the AT27BV1024 consumes less than one-fifth the power of a standard, 5V EPROM. The x16 organization makes this part ideal for portable and handheld 16-bit and 32-bit microprocessor based systems using either regulated or unregulated battery power.