32 Megabit (2 M x 16-Bit),
CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory

General Description
The Am29BDS323 is a 32 Mbit, 1.8 Volt-only, simultaneous Read/Write, Burst mode Flash Memory device. This device uses a single V_CC of 1.7 to 1.9V to read, program, and erase the memory array. A 12.0 Volt V_PP may be used for faster program performance if desired. The device can also be programmed in standard EPROM programmers. The Am29BDS323 provides a burst access of 20 ns at 30 pF with initial access times of 120 ns at 30 pF. The device operates within the industrial temperature range of –40°C to +85°C. The device is offered in the 47-ball FBGA package.

Distinctive Characteristics

Architectural Advantages

• Single 1.8 Volt read, program and erase (1.7 to 1.9 Volt)
• Multiplexed Data and Address for reduced I/O count
• A0–A15 multiplexed as D0–D15
• Addresses are latched with AVD# control inputs while CE# low
• Simultaneous Read/Write operations
• Data can be continuously read from one bank while executing erase/program functions in other bank
• Zero latency between read and write operations
• Burst length
• Continuous linear burst
• Sector Architecture
• Eight 4 Kword sectors and sixty-three sectors of 32 Kwords each
• Bank A contains the eight 4 Kword sectors and fifteen 32 Kword sectors
• Bank B contains forty-eight 32 Kword sectors
• Software command set compatible with JEDEC 42.4 standards
• Backwards compatible with Am29F and Am29LV families
• CMOS compatible inputs, CMOS compatible outputs

• 47-ball FBGA

Performance Characteristics

• Read access times at 40 MHz
• Burst access times of 20 ns @ 30 pF at industrial temperature range
• Asynchronous random access times of 90 ns @ 30 pF
• Synchronous random access times of 120 ns @ 30 Pf
• Power dissipation (typical values, 8 bits switching, CL = 30 pF)
• Burst mode read: 25 mA
• Simultaneous Operation: 40 mA
• Program/Erase: 15 mA
• Standby mode: 0.2 µA
• Minimum 1 million write cycles guaranteed per sector
• 20 year data retention at 125°C
• Reliable operation for the life of the system

Software Features

• Erase Suspend/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
• Data# Polling and Toggle Bits
• Provides a software method of detecting program and erase operation completion

Hardware Features

• Hardware reset pin (RESET#)
• Hardware method to reset the device for reading array data
• Sector protection
• Software command sector locking
• WP# protects the last two boot sectors
• All sectors locked when VPP = VIL