32 Megabit (4 M x 8-Bit/2 M x 16-Bit)
CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory

General Description
The Am29DS320G is a 32 megabit, 1.8 volt-only flash memory device, organized as 2,097,152 words of 16 bits each or 4,194,304 bytes of 8 bits each. Word mode data appears on DQ15-DQ0; byte mode data appears on DQ7-DQ0. The device is designed to be programmed in-system with the standard 1.8 volt VCC supply, and can also be programmed in standard EPROM programmers.

Distinctive Characteristics

Architectural Advantages

• Simultaneous Read/Write operations
  
  • Data can be continuously read from one bank while executing erase/program functions in another bank
    
  • Zero latency between read and write operations
    
• Flexible Bank™ architecture
  
  • Read may occur in any of the three banks not being written or erased.
    
  • Four banks may be grouped by customer to achieve desired bank divisions.
    
• 256-byte SecSi™ (Secured Silicon) Sector
  
  • Factory locked and identifiable: 16 bytes available for secure, random factory Electronic Serial Number; verifiable as factory locked through autoselect function. ExpressFlash option allows entire sector to be available for factory-secured data
    
  • Customer lockable: One time programmable. Once locked, data cannot be changed.
    
• Zero Power Operation
  
  • Sophisticated power management circuits reduce power consumed during inactive periods to nearly zero
    
• Package options
  
  • 48-ball FBGA
    
  • 48-pin TSOP
    
• Top or bottom boot blocks
  
• Manufactured on 0.17 µm process technology
  
• Compatible with JEDEC standards
  
  • Pinout and software compatible with single-power-supply flash standard

• High performance
  
  • Access time as fast 70 ns
    
  • Program time: 4 µs/word typical utilizing Accelerate function
    
• Ultra low power consumption (typical values)
  
  • 2 mA active read current at 1 MHz
    
  • 10 mA active read current at 5 MHz
    
  • 200 nA in standby or automatic sleep mode
    
• Minimum 1 million write cycles guaranteed per sector
  
• 20 year data retention at 125°C
  
  • Reliable operation for the life of the system

• Data Management Software (DMS)
  
  • AMD-supplied software manages data programming, enabling EEPROM emulation
    
  • Eases historical sector erase flash limitations
    
• Supports Common Flash Memory Interface (CFI)
  
• Erase Suspend/Erase Resume
  
  • Suspends erase operations to allow reading from other sectors in the same bank
    
• Data# Polling and Toggle Bits
  
  • Provides a software method of detecting the status of program or erase cycles
    
• Unlock Bypass Program command
  
  • Reduces overall programming time when issuing multiple program command sequences

Hardware Features

• Any combination of sectors can be erased
  
• Ready/Busy# output (RY/BY#)
  
  • Hardware method for detecting program or erase cycle completion
    
• Hardware reset pin (RESET#)
  
  • Hardware method of resetting the internal state machine to the read mode
    
• WP#/ACC input pin
  
  • Write protect (WP#) function allows protection of two outermost boot sectors, regardless of sector protect status
    
  • Acceleration (ACC) function accelerates program timing
    
• Sector protection
  
  • Hardware method of locking a sector, either in-system or using programming equipment, to prevent any program or erase operation within that sector
    
  • Temporary Sector Unprotect allows changing data in protected sectors in-system