4 Megabit (512 K x 8-Bit),
CMOS 3.0 Volt-only, Uniform Sector 32-Pin Flash Memory

General Description
The Am29LV040B is a single power supply, 4 Mbit, 3.0 Volt-only Flash Memory device. All read, erase, and program operations are accomplished using only a single power supply. The device can also be programmed in standard EPROM programmers. The device offers access times of 60, 70, 90, and 120 ns allowing high speed microprocessors to operate without wait states. The device is available in 32-pin PLCC and 32-pin TSOP packages.

Distinctive Characteristics

Architectural Advantages

• Single power supply operation
• Full voltage range: 2.7V to 3.6V read and write operations for battery-powered applications
• Regulated voltage range: 3.0V to 3.6V read and write operations and for compatibility with high performance 3.3 Volt microprocessors
• Manufactured on 0.32 µm process technology
• Flexible sector architecture
• Eight 64 Kbyte sectors
• Any combination of sectors can be erased; supports full chip erase
• Sector Protection features:
  Hardware method of locking a sector to prevent any program or erase operations within that sector
  Sectors can be locked via programming equipment
• Compatible with JEDEC standards
• Pinout and software compatible with single power supply Flash
• Superior inadvertent write protection

• 32-pin PLCC
• 32-pin TSOP

Performance Characteristics

• High performance
• Full voltage range: access times as fast as 70 ns
• Regulated voltage range: access times as fast as 60 ns
• Ultra low power consumption (typical values at 5 MHz)
• Automatic sleep mode: 1 µA
• Standby mode: 1 µA
• Read mode: 7 mA
• Program/erase mode: 15 mA
• Minimum 1,000,000 write/erase cycles guaranteed
• 20 Year data retention at 125°C
• Reliable operation for the life of the system

Software Features

• Unlock Bypass Mode Program Command
• Reduces overall programming time when issuing multiple program command sequences
• Data# Polling and Toggle Bits
• Provides a software method of detecting program or erase cycle completion
• Erase Suspend/Resume
• Supports reading data from or programming data to a sector not being erased