An integrated 40-Ohm series resistor on each card-side input aids EMI noise
reduction, while on-chip pull-up resistors are provided on the Card Detect and
Write Protect Detection inputs. ESD protection on the microprocessor port is
2kV. These two devices are the first single-chip level translator solutions on
the market for mobile phones and related products.
High memory density, physically small memory cards, such as the SD, Mini-SD
and MMC formats, are increasingly common features of mobile phones, set-top
boxes (STBs) and PDAs. The new ST6G3238E is a compact, high-speed and highly
cost-effective device for building the interface to an external card, with
contact ESD protection and card detection. Propagation delay is 4.4ns (max) for
2.3V/3.0V translation, and quiescent current is 20µA (max) on each side of the
interface.
Controlled by a Command line and with Clock synchronization, the level
translators are designed to support two-way asynchronous communication of up to
3+1 bits of bi-directional data between the different voltage systems.
Input/output protection is provided when the device is powered down.
The ST6G3238E is available in volume now in a 0.5mm-ball-pitch µTFBGA25
package. Pricing for the device is US$0.90 in quantities of 10,000
pieces.
Further information is available at www.st.com/level-translators
About ST’s Microcontroller, Linear & Discrete Group
STMicroelectronics is a world leader in offering complete system solutions that
leverage its rich portfolio of Microcontroller, Linear, and Discrete
products, advanced process and design technologies, and applications
expertise. This emphasis on solutions allows the Company to minimize
time-to-market for all customers worldwide in existing and emerging
applications.
