详细介绍
Introduction
The NAND Flash 2112 Byte/ 1056 Word Page is a family of non-volatile Flash memories that uses NAND cell technology. The devices range from 1 Gbit to 2 Gbits and operate with either a 1.8V or 3V voltage supply. The size of a Page is either 2112 Bytes (2048 + 64 spare) or 1056 Words (1024 + 32 spare) depending on whether the device has a x8 or x16 bus width.The address lines are multiplexed with the Data Input/Output signals on a multiplexed x8 or x16 Input/Output bus. This interface reduces the pin count and makes it possible to migrate to other densities without changing the footprint.
Each block can be programmed and erased over 100,000 cycles. To extend the lifetime of NAND Flash devices it is strongly recommended to implement an Error Correction Code (ECC).
The devices have hardware and software security features:
● A Write Protect pin is available to give a hardware protection against program and erase operations.
● A Block Locking scheme is available to provide user code and/or data protection.
The devices feature an open-drain Ready/Busy output that can be used to identify if the Program/Erase/Read (P/E/R) Controller is currently active. The use of an open-drain output allows the Ready/Busy pins from several memories to be connected to a single pull-up resistor.
A Copy Back Program command is available to optimize the management of defective blocks. When a Page Program operation fails, the data can be programmed in another page without having to resend the data to be programmed.
Each device has Cache Program and Cache Read features which improve the program and read throughputs for large files. During Cache Programming, the device loads the data in a Cache Register while the previous data is transferred to the Page Buffer and programmed into the memory array. During Cache Reading, the device loads the data in a Cache Register while the previous data is transferred to the I/O Buffers to be read.
All devices have the Chip Enable Don’t Care feature, which allows code to be directly downloaded by a microcontroller, as Chip Enable transitions during the latency time do not stop the read operation.
All devices have the option of a Unique Identifier (serial number), which allows each device to be uniquely identified.
The Unique Identifier options is subject to an NDA (Non Disclosure Agreement) and so not described in the datasheet. For more details of this option contact your nearest ST Sales office.
The devices are available in the following packages:
● TSOP48 (12 x 20mm) for all products
● VFBGA63 (9.5 x 12 x 1mm, 0.8mm pitch) for 1Gb products
● TFBGA63 (9.5 x 12 x 1.2mm, 0.8mm pitch) for 2Gb Dual Die products
In order to meet environmental requirements, ST offers the NAND01G-B and NAND02G-B in ECOPACK® packages. ECOPACK packages are Lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark.