Jul 5, 2011 13:31 GMT  ·  By

Apple is said to have adopted a 400-Mbps interface ‘Toggle DDR 2.0’ NAND flash memory for new MacBook Air, according to an Asian electronics component maker quoted by Japanese blog Makotakara.

Built in a 19nm process, ToggleDDR is a NAND interface for high-performance applications which supports data read and write operations using bidirectional DQS.

Samsung's implementation has a Double Data Rate without clocks and it’s backward compatible with Conventional NAND (SDR NAND) in terms of function and command.

ToggleDDR provides fast data transmission based on the high-speed DDR Interface and consumes less power when reduced I/O voltage is adopted.

Toggle DDR 1.0 does 133Mbps, whereas the 2.0 spec will support up to 400Mbps, according to the Korean electronics maker.

Samsung and Apple are currently embroiled in a legal dispute over similarities between their portables.

According to the Makotakara report, picked up by MacDailyNews, the current SSD Blade X-gale supporting SATA 2.6 will be “abolished”.

The new 19nm flash memory will be packaged into smaller chips and it will be soldered on base circuits directly, according to the Japanese blog whose sources are unknown.

Apple already has updated MacBook Air units on the launch pad. However, it is very likely that Samsung has given Apple early access to the technology.

According to the Korean company, other benefits posed by the Toggle DDR 2.0 specification include:

Low power - 1.8V VCCQ without a free running clock  : Toggle DDR NAND saves more power when 1.8V IO voltage is adopted than existing SDR NAND which supports only 3.3V IO voltage  : Toggle DDR NAND is power efficient as it does not need the free-running clock

JEDEC standard

: Toggle DDR is a standard interface of the NAND Flash component itself and is defined through a joint task group in the JEDEC. Participation in the joint task group is open to all JEDEC members.

Various High-Performance Application Support

: As high speed interfaces such as SATA2/3, USB3.0, UFS and UHS-1/2 are introduced, the high speed NAND composing the application is widely required.