FM7843 Shanghai Fudan Microelectronics Co., Ltd., FM7843 Datasheet
FM7843
Related parts for FM7843
FM7843 Summary of contents
Page 1
... FM7843 Touch Screen Controller Specification May. 2008 FM7843 Touch Screen Controller Ver 1.1 Specification 1 ...
Page 2
... Trademarks Shanghai Fudan Microelectronics Co., Ltd name and logo, the “复旦” logo are trademarks or registered trademarks of Shanghai Fudan Microelectronics Co., Ltd or its subsidiaries in Shanghai Fudan Microelectronics Co., Ltd, Printed in the China, All Rights Reserved. FM7843 Touch Screen Controller China. Ver1.1 Specification ...
Page 3
... Product Overview Instruction FM7843 is a 4-wire resistive touch screen input controller integrated circuit. The device is a 12-bit analog-to-digital converter with a synchronous serial interface and touch screen driving circuit. It has a shutdown mode, in which the power dissipation of the device is as low as 0.5µW. Fully compatible with Burr-Brown’ ...
Page 4
... BUSY 13 DIN DCLK 16 FM7843 Touch Screen Controller Power supply 2. Position input. ADC input Channel 1 Y+ Position input. ADC input Channel 2 X- Position input Y- Position input Ground Auxiliary input 1. ADC input Channel 3 Auxiliary input 2. ADC input Channel 4 Voltage Reference input Power supply, 2. Pen interrupt. Open anode output (requires 10kΩ ...
Page 5
... V =2.5V, f （V CC ref Analog Input System Performance Sampling Dynamics Switch Drivers Power Supply Requirements FM7843 Touch Screen Controller Parameter Maximum Operation Voltage Analog input voltage Digital input voltage Total power dissipation Storage temperature Operation temperature =125KHz, f =2MHz） sample clk ...
Page 6
... Application Example FM7843 Touch Screen Controller Ver1.1 Specification 6 ...
Page 7
... Ordering Information Ordering Code FM7843-TS FM7843-QF FM7843 Touch Screen Controller Package Operation Temperature TSSOP16 Industrial Temperature QFN16 Ver1.1 （-40°C ~ +85°C） Specification 7 ...
Page 8
... Package Dimensions FM7843 Touch Screen Controller TSSOP16 Ver1.1 Specification 8 ...
Page 9
... FM7843 Touch Screen Controller QFN16 Ver1.1 Specification 9 ...
Page 10
... Revision History Publication Version date 1.0 Oct. 2007 1.1 May. 2008 FM7843 Touch Screen Controller Paragraph or Pages Illustration 11 Initial Release. 11 Sales and service Updated the address of HK office. Ver1.1 Revise Description Specification 10 ...
Page 11
... Tel: (86-10) 6212 0682 6213 9558 Fax: (86-10) 6212 0681 Shenzhen Office Address: Room.1301, Century Bldg, Shengtingyuan Hotel, Huaqiang Rd (North), Shenzhen City, China. Postcode: 518028 Tel: (86-755) 8335 3211 8335 6511 Fax: (86-755) 8335 9011 Web Site: http://www.fmsh.com/ FM7843 Touch Screen Controller Ver1.1 Specification 11 ...