OnSpec xSil 146 ATA to Flash Media Controller



The xSil 146 provides a low cost and low component solution to connect IDE host to industry standard flash memories and open standards like CF, SD and SD HC etc. For any custom support, contact us.

OnSpec offers reference designs, firmware, drivers, and manufacturing test software to make product development easy. OnSpec’s patented technology provide optimum throughput and superior flash media compatibility.


  • 128-pin 16mm x 16mm LQFP package

  •  Built-in oscillator

  •  Serial port

  • Two General Purpose Timers

  • Watchdog Timer

  • 16 bit RISC Processor

  • Internal RAM for firmware enhancements and data transfer

  • Internal ROM contains BIOS and Application code.

  • Serial EEPROM for firmware enhancements for Flash media

  • Optimum hardware controlled transfer for speed and scalability

  • Supports up to IDE PIO mode 4 and UDMA mode 5 data transfer on Host side.

  • Supports up to IDE PIO mode 6 and UDMA mode 5 data transfer on Device side.

  • Supports ATA protocol


 Ordering Information

Part Number



xSil 146-LF

Lead free package for ATA to industry standard flash memories.

128 LQFP Lead Free

(RoHS Compliant)


Technical and Design-in Information

Contact: sales@siliconapps.com

Design Support ( OnSpec Engineering to review if supported and can provide these services.)

  • Card Manufacturer Compatibility Testing (Software Release Notes)

  • Four Layer Board Reference Design, BOM, Schematic and Gerber

  •   Flash Media Association Contact List


OnSpecLink® Family of Products
This product is covered by one or more of the following patents:
US Pat. 5841424, 6438638, 6832281, 6859361, 6859369
Taiwan Pat. I 222564
Other Foreign & US Patents Pending


Information in this document is provided in connection with OnSpec Electronic products. No license, express or implied, by estoppels or otherwise, to any intellectual property rights is granted by this document. Except as provided in OnSpec Electronic’s Terms and Conditions of Sale for such products, OnSpec Electornic assumes no liability whatsoever, and OnSpec Electronic disclaims any express or implied warranty, relating to sale and/or use of OnSpec Electronic products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement or any patent, copyright or other intellectual property right.

OnSpec Electronic products are not intended for use in medical, life saving, or life sustaining applications.


OnSpecLink Is a registered trademark of OnSpec Electronic, Inc.

All trademarks are the properties of their respective owners.

Download: Product Sheet PDF Size=260KB