S34MS02G200BHI000

The SkyHigh S34MS01G2, S34MS02G2, and S34MS04G2 series is offered in 1.8 VCC and VCCQ power supply, and with x8 or x16
I/O interface. Its NAND cell provides the most cost-effective solution for the solid state mass storage market. The memory is divided
into blocks that can be erased independently so it is possible to preserve valid data while old data is erased. The page size for x8 is
(2048 + spare) bytes; for x16 (1024 + spare) words.
Each block can be programmed and erased up to 100,000 cycles with ECC (error correction code) on. To extend the lifetime of
NAND flash devices, the implementation of an ECC is mandatory.
The chip supports CE# don’t care function. This function allows the direct download of the code from the NAND flash memory device
by a microcontroller, since the CE# transitions do not stop the read operation.
The devices have a Read Cache feature that improves the read throughput for large files. During cache reading, the devices load
the data in a cache register while the previous data is transferred to the I/O buffers to be read.
Like all other 2-kB page NAND flash devices, a program operation typically writes 2 KB (x8), or 1 kword (x16) in 300 µs and an erase
operation can typically be performed in 3 ms (S34MS01G2) on a 128-kB block (x8) or 64-kword block (x16). In addition, thanks to
multiplane architecture, it is possible to program two pages at a time (one per plane) or to erase two blocks at a time (again, one per
plane). The multiplane architecture allows program time to be reduced by 40% and erase time to be reduced by 50%.
In multiplane operations, data in the page can be read out at 45 ns cycle time per byte. The I/O pins serve as the ports for command
and address input as well as data input/output. This interface allows a reduced pin count and easy migration towards different
densities, without any rearrangement of the footprint.
Commands, Data, and Addresses are asynchronously introduced using CE#, WE#, ALE, and CLE control pins.
The on-chip Program/Erase Controller automates all read, program, and erase functions including pulse repetition, where required,
and internal verification and margining of data. A WP# pin is available to provide hardware protection against program and erase
operations.
The output pin R/B# (open drain buffer) signals the status of the device during each operation. It identifies if the program/erase/read
controller is currently active. The use of an open-drain output allows the Ready/Busy pins from several memories to connect to a
single pull-up resistor. In a system with multiple memories the
R/B# pins can be connected all together to provide a global status signal.
The Reprogram function allows the optimization of defective block management — when a Page Program operation fails the data
can be directly programmed in another page inside the same array section without the time consuming serial data insertion phase.
Multiplane Copy Back is also supported. Data read out after Copy Back Read (both for single and multiplane cases) is allowed.
In addition, Cache Program and Multiplane Cache Program operations improve the programing throughput by programing data
using the cache register.
The devices provide two innovative features: Page Reprogram and Multiplane Page Reprogram. The Page Reprogram re-programs
one page. Normally, this operation is performed after a failed Page Program operation. Similarly, the Multiplane Page Reprogram reprograms two pages in parallel, one per plane. The first page must be in the first plane while the second page must be in the second
plane. The Multiplane Page Reprogram operation is performed after a failed Multiplane Page Program operation. The Page
Reprogram and Multiplane Page Reprogram guarantee improved performance, since data insertion can be omitted during reprogram operations.
The devices come with the following security features:
 OTP (one time programmable) area, which is a restricted access area where sensitive data/code can be stored permanently.
 Serial number (unique identifier), which allows the devices to be uniquely identified. Contact factory for support of this feature.
These security features are subject to an NDA (non-disclosure agreement) and are, therefore, not described in the data sheet. For
more details about them, contact your nearest SkyHigh sales office.