Product category:
Memory Devices and Modules
News Release from: IDT | Subject: 1.8V dual-port devices
Edited by the Electronicstalk Editorial
Team on 24 February 2004
Frugal dual ports aim for handset uses
Integrated Device Technology has released the industry's first family of 1.8V dual-port devices that delivers extremely low power consumption for a wide range of wireless handheld applications.
Integrated Device Technology has released the industry's first family of 1.8V dual-port devices that delivers extremely low power consumption for a wide range of wireless handheld applications For example, a baseband processor and an applications processor both might be required to exchange high-speed data with one another while handling independent processing requirements in parallel
This article was originally published on Electronicstalk on 12 Apr 2001 at 8.00am (UK)
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Evolving 2.5G and 3G cellular applications, which integrate voice, multimedia and data processing, are good examples of such environments.
The 1.8V dual-port devices offer high-speed access times to 55ns and provide two independent ports with separate control, address and I/O pins that permit independent, asynchronous access for reads or writes to any location in memory.
With up to a 95% reduction in operating and standby current, the new family offers a dramatic improvement in power consumption when compared to alternative dual-ports in the market.
The new IDT dual-port devices are fabricated using a high-performance IDT CMOS technology and typically operate on only 27mW of power.
In addition, an automatic power-down feature permits the on-chip circuitry of each port to enter a very low standby power mode of typically only 3.6mW.
The devices are packaged in a 100-ball, 0.5 mm-pitch ball grid array, which is only 1mm thick, making them ideal for wireless handset and other portable applications.
The new dual-port family includes two specialised devices, the 70P248 and 70P258, which support 3.3/3.0/2.5V I/O voltages on one port with the core and opposite port I/Os operating at 1.8V.
This functionality enables designers to use a single dual-port to interface between processors and I/Os of different voltages without using additional voltage translators.
The devices also offer other features not found in traditional dual-port devices: for example the 70P248 and 70P258 integrate innovative input read and output drive registers that allow the user to monitor and drive external binary input and output devices, such as DIP switches and LEDs, using only the standard memory interface of the dual port.
This functionality extends the capabilities of the processors in the application and gives the user the ability to use valuable GPIO (general purpose I/O) pins for other purposes.
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