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Serial flash memory with dual I/O clocks at 75MHz

Posted: 30 Aug 2007 ?? ?Print Version ?Bookmark and Share

Keywords:serial flash memory? dual I/O? 75MHz clocks?


STMicroelectronics has released the M25PX32, a 32Mbit device said to be the first of the sector, sub-sector erase serial flash family to be offered with dual I/O. Whereas existing M25PE family devices features high granularity, the M25PX family guarantees high-speed performance.

Digital flat panels and STBs are typical applications for the M25PX32 with its execute-in-place (XiP) features. In digital flat panels, the XiP feature produces increased interaction for the user, while in STBs, the improvement can be seen in the turn-on speed, where high-speed downloading of the code to RAM offers faster system power up. On a larger scale, the M25PX32 brings added value to all applications requiring higher densities, such as PCs, optical disk drivers and printers.

Developed in ST's 0.11#&181;m process technology, the M25PX32 represents the natural evolution of the M25P sub-sector Serial Flash family. The chip combines a high level of technical performance such as improved speed of operation over the full supply voltage range together with new technical features such as dual I/O.

In addition to guaranteed full-temperature performance, the M25PX32 distinguishes itself by its reliability. Designed to meet the needs of applications requiring higher clock frequency, the device supports 75MHz frequency through the entire 2.7-3.6V supply voltage range and through the -40C to 85C industrial temperature range.

The dual I/O feature is also significant. During the fast read phase, the dual output command allows the system to double the data transfer bandwidth, effectively clocking the NOR at the equivalent of 150MHz, again over the full voltage range. Finally, in the fast program phase both the input and output pins are used for programming the memory.

In addition to device-security features such as protection after power up, the M25PX32 also features an additional 64byte user-lockable, one-time programmable (OTP) area and the possibility to set the memory as read-only.

Samples in S08W, the ultrathin MLP8 5mm x 6mm and SO16W packages, are available now. Volume production will begin in Q4. Pricing starts at $1.55 in 10,000-piece quantities.

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