●256 Megabit, 128 Megabit, 64 Megabit, and 32 Megabit, 3.0 Volt-only Page Mode Flash Memory featuring 0.23 µm MirrorBit Process Technology
●General Description
●The S29GL256/128/064/032M family of devices are 3.0 V single power Flash memory manufactured using 0.23 µm MirrorBit technology. The S29GL256M is a 256†Mbit, organized as 16,777,216 words or 33,554,432 bytes. The S29GL128M is a 128 Mbit, organized as 8,388,608 words or 16,777,216 bytes. The S29GL064M is a 64 Mbit, organized as 4,194,304 words or 8,388,608 bytes. The S29GL032M is a 32 Mbit, organized as 2,097,152 words or 4,194,304 bytes. Depending on the model number, the devices have an 8-bit wide data bus only, 16-bit wide data bus only, or a 16-bit wide data bus that can also function as an 8-bit wide data bus by using the BYTE# input. The devices can be programmed either in the host system or in standard EPROM programmers.
●Distinctive Characteristics
●Architectural Advantages
●■ Single power supply operation
● — 3 volt read, erase, and program operations
●■ Manufactured on 0.23 µm MirrorBit process technology
●■ Secured Silicon Sector region
● — 128-word/256-byte sector for permanent, secure identification through an 8-word/16-byte random Electronic Serial Number, accessible through a command sequence
● — May be programmed and locked at the factory or by the customer
●■ Flexible sector architecture
● — 256 Mb: 512 32-Kword (64 Kbyte) sectors
● — 128 Mb: 256 32-Kword (64 Kbyte) sectors
● — 64 Mb (uniform sector models): 128 32-Kword (64-Kbyte) sectors or 128 32 Kword sectors
● — 64 Mb (boot sector models): 127 32-Kword (64-Kbyte) sectors + 8 4Kword (8Kbyte) boot sectors
● — 32 Mb (uniform sector models): 64 32-Kword (64-Kbyte) sectors of 64 32-Kword sectors
● — 32 Mb (boot sector models): 63 32-Kword (64 Kbyte) sectors + 8 4-Kword (8-Kbyte) boot sectors
●■ Compatibility with JEDEC standards
● — Provides pinout and software compatibility for single power supply flash, and superior inadvertent write protection
●■ 100,000 erase cycles typical per sector
●■ 20-year data retention typical
●Performance Characteristics
●■ High performance
● — 90 ns access time (128 Mb, 64 Mb, 32 Mb), 100 ns access time (256 Mb)
● — 4-word/8-byte page read buffer
● — 25 ns page read times (128 Mb, 64 Mb, 32 Mb)
● — 30 ns page read times (256 Mb)
● — 16-word/32-byte write buffer
● — 16-word/32-byte write buffer reduces overall programming time for multiple-word updates
●■ Low power consumption (typical values at 3.0 V, 5 MHz)
● — 18 mA typical active read current (64 Mb, 32 Mb)
● — 25 mA typical active read current (256 Mb, 128 Mb)
● — 50 mA typical erase/program current
● — 1 µA typical standby mode current
●■ Package options
● — 40-pin TSOP
● — 48-pin TSOP
● — 56-pin TSOP
● — 64-ball Fortified BGA
● — 48-ball fine-pitch BGA
● — 63-ball fine-pitch BGA
●Software & Hardware Features
●■ Software features
● — Program Suspend & Resume: read other sectors before programming operation is completed
● — Erase Suspend & Resume: read/program other sectors before an erase operation is completed
● — Data# polling & toggle bits provide status
● — CFI (Common Flash Interface) compliant: allows host system to identify and accommodate multiple flash devices
● — Unlock Bypass Program command reduces overall multiple-word programming time
●■ Hardware features
● — Sector Group Protection: hardware-level method of preventing write operations within a sector group
● — Temporary Sector Unprotect: VID-level method of charging code in locked sectors
● — WP#/ACC input accelerates programming time (when high voltage is applied) for greater throughput during system production. Protects first or last sector regardless of sector protection settings on uniform sector models
● — Hardware reset input (RESET#) resets device
● — Ready/Busy# output (RY/BY#) detects program or erase cycle completion
