Lattice Reduces Standby Current for LatticeXP FPGAs by Factor of 1000

8/10/2005 - Lattice Semiconductor Corporation (NASDAQ: LSCC) announced the addition of a new power-saving feature that reduces standby power by over a factor of 1000 for its LatticeXPTM family of non-volatile FPGAs. Sleep mode utilizes the LatticeXP device's unique Flash and SRAM architecture to provide an ultra low standby state that can be entered in nanoseconds and exited in less than 2mS. While in Sleep mode, the LatticeXP device draws as little as 120uA of total power supply current.

"The need for reduced power consumption has largely been unmet by mainstream FPGAs," said Stan Kopec, Lattice vice president of corporate marketing. "The new Sleep mode, now available in our LatticeXP FPGAs, allows our customers to achieve the low power operation they require while still enjoying the design flexibility of a mainstream FPGA."

FPGA Sleep Mode An Industry First
To reduce power consumption, a wide variety of integrated circuit manufacturers have added sleep, or standby, modes to their devices. Lattice now leads the FPGA industry by incorporating, for the first time, this approach into a mainstream, LUT-based FPGA. A single pin called SLEEPN controls entry into and exit from Sleep mode. When this pin is held high, the device operates normally. When driven low, the device moves into Sleep mode in less than 100nS. In Sleep mode, the total device standby current is as little as 120uA. When SLEEPN is driven high again, the device configuration is automatically restored from the on-chip Flash block and resumes normal operation after a maximum delay of 2mS.

About LatticeXP FPGAs
Non-volatile LatticeXP FPGAs deliver the benefits of instant-on operation, excellent security and a single-chip implementation, and provide cost-effective alternatives to traditional SRAM-based FPGAs and their associated boot memories. The ispXPTM technology used in the LatticeXP devices combines SRAM and non-volatile Flash memory to deliver an FPGA that is both non-volatile and infinitely reconfigurable. The SRAM-based memory cells control the operation of the device logic and are loaded from the on-chip Flash memory in less than 1mS at power-up -- providing instant-on capability -- or on user command. Unlike SRAM-based FPGAs, the LatticeXP device does not require an external boot memory and so provides a single-chip solution with the associated benefits of reduced board area and simplified system manufacture. The absence of an external boot device also eliminates the need for an external bit-stream at boot up and the possibility of bitstream snooping, a major security concern with SRAM FPGAs. Security features prohibit bit-stream readback from the SRAM and Flash sections of the devices to further enhance security.

The LatticeXP FPGA family includes 5 logic capacities: 3, 6, 10, 15 and 20K LUTs. The 3, 6, and 10K versions are sampling now. For each capacity, there are two power supply versions: a C-version that supports 3.3, 2.5 and 1.8-volt operation, and an E-version that supports 1.2-volt operation. The Sleep mode is available on all C-versions of the device.

About Lattice Semiconductor
Lattice Semiconductor Corporation provides the industry's broadest range of Field Programmable Gate Arrays (FPGA) and Programmable Logic Devices (PLD), including Field Programmable System Chips (FPSC), Complex Programmable Logic Devices (CPLD), Programmable Mixed-Signal Products (ispPAC®) and Programmable Digital Interconnect Devices (ispGDX®). Lattice also offers industry leading SERDES products.

Lattice is "Bringing the Best Together" with comprehensive solutions for system design, including an unequaled portfolio of non-volatile programmable devices that deliver instant-on operation, security and "single chip solution" space savings. Lattice products are sold worldwide through an extensive network of independent sales representatives and distributors, primarily to OEM customers in communications, computing, industrial, consumer, automotive, medical and military end markets. Company headquarters are located at 5555 NE Moore Court, Hillsboro, Oregon 97124-6421, USA; telephone 503-268-8000, fax 503-268-8037. For more information about Lattice Semiconductor Corporation, visit

Lattice Semiconductor Corporation, Lattice (& design), L (& design), ispGDX, ispPAC, ispXP, LatticeXP and specific product designations are either registered trademarks or trademarks of Lattice Semiconductor Corporation or its subsidiaries in the United States and/or other countries.

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