Lexington, Mass. - STMicroelectronics Inc. has increased from 64 Mbits to 128 Mbits the capacity of its largest multibit, NOR-type flash memory devices. Made on the company's 0.15-mm process, the devices store 2 bits of data per cell, reducing memory array area by as much as 50 percent.
The M58LW128A has a 16-bit-wide data bus, while the M58LW128B can be configured with a 16-bit or a 32-bit-wide data bus. Both are organized as 128 blocks of 1 Mbit, allowing one device to store both code and data and improve system performance in addition to saving space. Each block has a security mechanism that can be used to protect boot code or data.
The devices operate from a single supply voltage, which suits them for use in handheld applications. Program, erase and read operations are performed using a 2.7- to 3.6-volt supply while the input/output buffer voltage supply is powered from 1.8 V to Vdd. The flash devices can be programmed in-system on a 16-word or eight-double-word basis, and can be electrically erased at block level.
Samples of the M58LW128A are available now in a 56-lead, 14 x 20-mm thin small-outline package. It will also be available in a 64-ball, 10 x 13-mm TBGA with 1-mm ball pitch. The M58LW128B is available in an 80-ball, 10 x 13-mm TBGA with 1-mm ball pitch. The M58LW128 is priced at $10 in 500k lots.
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