Single Channel Low Voltage UARTs

1. Single Channel Low Voltage UARTs

2. Single Channel, Low Voltage Solution • Two 16 Byte FIFO versions (M570, M580) • Two 32 Byte FIFO versions (M670, M680) • Two 64 Byte FIFO versions (M770, M780) • Packages • QFN and TQFP for socket compatibility • BGA to address new customers needs and applications • Low voltage (1.8V-3.3V), high performance (up to 16Mbps)

3. Key Features • Different Tx/Rx Data Rates (New Feature) • Increase design flexibility • Lower total system design cost for customers • 4X/8X Sampling Options (New Feature) • Allows selection of slower clock/crystal sources to generate faster baud rate • Fractional Baud Rate Generator (New Feature) • Achieve desired baud rate with any crystal • Multidrop (New Feature) • Point-to-multipoint support for RS-485 networks • Hardware and Software Flow Control • Built-in support to prevent overrun errors • Auto RS-485 Half-Duplex Direction Control • Built-in hardware to prevent data loss

4. Benefits Why use single-channel, low voltage UARTs? • Highest performance at lower supply voltage • 16Mbps (3.3V) • 12.5Mbps (2.5V) • 7.5Mbps (1.8V) • Overall System Cost Reduction • FBRG • 4X/8X Sampling Option • Different Tx/Rx Data Rates • Ease of Migration with pin and software compatibility • Shorter Time To Market • Easier to add UART than to upgrade to new CPU

5. Product Differentiation

6. Competition

7. Single Channel Target Markets • Consumer Segment • Portable devices (GPS, PMP, PDAs, etc.) • Industrial Segment • Card/Barcode Reader • Gate Access • Fax • Add-on Cards • Commercial Segment • Pachinko Machines • Gaming Systems • POS

8. Exar’s Potential Target Customers • Consumer • LG, Garmin, Motorola, MCS Logic, HP, Huawei, Freesat, LDS Plus, Quanta, Vision Tech, Bandai, Xanavi, Mitsubishi Electric • Industrial • I/O Data, NEC Access Technica, NEC Infrontia, EFI, Alocom, Emerson, Advantech, ZTE, Sagem, Zebra • Commercial • Omron, Symbol/Motorola, Ingenico, Bematech, Toshiba Tech

9. Pricing & Availability • Budgetary pricing (1Ku) • M570/M580 $1.80 • M670/M680 $1.90 • M770/M780 $2.05 • Sampling • Now • Production • Sept-end

10. Collateral and Support • Customer presentation Now • Press Announcement Sept-end • Datasheet • Preliminary Now • Final Sept-end • Product Launch Overview Sept-end • Evaluation board Sept-end • Software support Sept-end • Product flyers Oct-mid

11. Interface UART Roadmap: V / M Families – Q3CY08 16V698 32-Byte FIFO 16M698 32-Byte FIFO 8-ch 16V798 64-Byte FIFO 16V598 16-Byte FIFO 16M598 16-Byte FIFO 16M654 64-Byte FIFO 16V654 64-Byte FIFO 16V794 64-Byte FIFO 4-ch 16V564 32-Byte FIFO 16M564 32-Byte FIFO 16V554 16-Byte FIFO 16M554 16-Byte FIFO 16V275X 64-Byte FIFO 16M275X 64-Byte FIFO 16M265X 32-Byte FIFO 16V265X 32-Byte FIFO V Family: High Performance (3.3V) M Family: Low Voltage (1.8V) 2-ch 16V255X 16-Byte FIFO 16M255X 16-Byte FIFO 16M752 64-Byte FIFO 68M752 64-Byte FIFO 16M781 64-Byte FIFO, VLIO 16M770/80 64-Byte FIFO 16V770/80 64-Byte FIFO 1-ch 16M681 32-Byte FIFO, VLIO 16M670/80 32-Byte FIFO 16V670/80 32-Byte FIFO 16M581 16-Byte FIFO, VLIO 16M570/80 16-Byte FIFO 16V570/80 16-Byte FIFO 2Q08 3Q08 4Q08 Focus Products 1Q09 In Production Sampling In Development / Target Sample Date Under Review

12. Summary • Industry First • Highest Performance • Different Tx/Rx Data Rate • 4X/8X Sampling Rate Option • Industry Best • Low Voltage, Low Power Consumption • FBRG • Industry’s Largest Portfolio of Low Voltage UART Products

13. Q & A Thank You