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Am29LV400B Product Overview
4 Megabit (512 K x 8-Bit/256 K x 16-Bit)
CMOS 3.0 Volt-only Boot Sector Flash Memory
General Description
The Am29LV400B is a 4 Mbit, 3.0 Volt-only Flash Memory. This device is designed to be programmed in-system using only a single 3.0 Volt VCC supply. No VPP is required for write or erase operations. The device can also be programmed in standard EPROM programmers. The device is offered in 48-ball FBGA, 44-pin SO, 48-pin TSOP packages, and Known Good Die (KGD) packaging.
Distinctive Characteristics
Architectural Advantages
- Single power supply operation
- Full voltage range: 2.7 to 3.6 Volt read and write operations for battery-powered applications
- Regulated voltage range: 3.0 to 3.6 Volt read and write operations for compatibility with high performance 3.3 Volt microprocessors
- Manufactured on 0.32 µm process technology
- Compatible with 0.5 µm Am29LV400 device
- Flexible sector architecture
- One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and seven 64 Kbyte sectors (byte mode)
- One 8 Kword, two 4 Kword, one 16 Kword, and seven 32 Kword sectors (word mode)
- Supports full chip erase
- Sector Protection features:
A hardware method of locking a sector to prevent any program or erase operations within that sector
Sectors can be locked in-system or via programming equipment
Temporary Sector Unprotect feature allows code changes in previously locked sectors
- Top or bottom boot block configurations available
- Compatible with JEDEC standards
- Pinout and software compatible with single power supply Flash
- Superior inadvertent write protection
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Package Options
- 48-ball FBGA
- 48-pin TSOP
- 44-pin SO
- Known Good Die (KGD)
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Performance Characteristics
- High performance
- Full voltage range: access times as fast as 70 ns
- Regulated voltage range: access times as fast as 55 ns
- Ultra low power consumption (typical values at 5 MHz)
- 200 nA Automatic Sleep mode current
- 200 nA standby mode current
- 7 mA read current
- 15 mA program/erase current
- Minimum 1,000,000 write cycle guarantee per sector
- 20-year data retention at 125°C
- Reliable operation for the life of the system
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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 operation completion
- Erase Suspend/Erase Resume
- Suspends an erase operation to read data from, or program data to, a sector that is not being erased, then resumes the erase operation
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Hardware Features
- Ready/Busy# pin (RY/BY#)
- Provides a hardware method of detecting program or erase cycle completion
- Hardware reset pin (RESET#)
- Hardware method to reset the device to reading array data
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