GENERAL DESCRIPTION
NAND Flash devices include an asynchronous data interface for high-performance I/O operations. These devices use a highly multiplexed 8-bit bus (I/Ox) to transfer commands, address, and data. There are five control signals used to implement the asynchronous data interface: CE#, CLE, ALE, WE#, and RE#. Additional signals control hardware write protection and monitor device status (R/B#).
This hardware interface creates a low pin-count device with a standard pinout that remains the same from one density to another, enabling future upgrades to higher densities with no board redesign.
FEATURES
● Operating voltage range
― VCC: 2.7–3.6V
● Open NAND Flash Interface (ONFI) 1.0-compliant1
● Single-level cell (SLC) technology
● Organization
― Page size: 4352 bytes (4096 + 256 bytes)
― Block size: 64 pages
― Number of planes: 1
● Asynchronous I/O performance
― tRC/tWC: 25ns
● Array performance
― Read page: 115μs (MAX) with on-die ECC enabled
― Read page: 25μs (MAX) with on-die ECC disabled
― Program page: 200μs (TYP) with on-die ECC
disabled
― Program page: 240μs (TYP) with on-die ECC enabled
― Erase block: 2ms (TYP)
● Command set: ONFI NAND Flash protocol
● Advanced command set
― Program page cache mode
― Read page cache mode
― Permanent block locking (blocks 47:0)
― One-time programmable (OTP) mode
― Block lock
― Programmable drive strength
● Operation status byte provides software method for
detecting
― Operation completion
― Pass/Fail condition
― Write-protect status
● Ready/Busy# (R/B#) signal provides a hardware method
of detecting operation completion
● WP# signal: Write protect entire device
● ECC: 8-bit internal ECC is disabled at default2. It can be
toggled using the SET FEATURE command
● Blocks 0 is valid when shipped from factory with ECC. For
minimum required ECC, see Error Management.
● RESET (FFh) required as first command after power- on.
● Internal data move operations supported within the plane
from which data is read
● Quality and reliability
― Endurance: 100,000 PROGRAM/ERASE cycles
― Data retention: JESD47G-compliant; see qualification
report
― Additional: Uncycled data retention: 10 years 24/7 @
70°C
― Read unique ID
― Internal data move