CAT5251YI-00 ON Semiconductor, CAT5251YI-00 Datasheet
CAT5251YI-00
Specifications of CAT5251YI-00
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CAT5251YI-00 Summary of contents
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Quad Digitally Programmable Potentiometer (DPP™) with 256 Taps and SPI Interface FEATURES Four linear-taper digitally programmable potentiometers 254 resistor taps per potentiometer End to end resistance 50 kΩ or 100 kΩ Potentiometer control and memory access via SPI interface Low ...
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CAT5251 PIN DESCRIPTION SI: Serial Input SI is the serial data input pin. This pin is used to input all opcodes, byte addresses and data to be written to the CAT5251. Input data is latched on the rising edge of ...
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SERIAL BUS PROTOCOL The CAT5251 supports the transmission protocol. The synchronous Serial Peripheral Interface (SPI) helps the CAT5251 to interface directly with many of today's popular microcontrollers. The CAT5251 contains an 8-bit instruction register. The instruction set and the operation ...
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CAT5251 POTENTIOMETER CHARACTERISTICS Over recommended operating conditions unless otherwise stated. Symbol Parameter R Potentiometer Resistance (-00) POT R Potentiometer Resistance (-50) POT Potentiometer Resistance Tolerance R Matching POT Power Rating I Wiper Current W R Wiper Resistance W V Voltage ...
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PIN CAPACITANCE Applicable over recommended operating range from T Symbol Parameter C Output Capacitance (SO) OUT C ¯¯¯ , SCK, SI, WP Input Capacitance (CS IN A.C. CHARACTERISTICS Over recommended operating conditions unless otherwise stated. Symbol Parameter t Data ...
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CAT5251 WRITE CYCLE LIMITS Over recommended operating conditions unless otherwise stated. Symbol Parameter t Write Cycle Time WR RELIABILITY CHARACTERISTICS Over recommended operating conditions unless otherwise stated. Symbol Parameter (1) N Endurance END (1) T Data Retention DR (1) V ...
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INSTRUCTION AND REGISTER DESCRIPTION DEVICE TYPE / ADDRESS BYTE The first byte sent to the CAT5251 from the master/processor is called the Device Address Byte. The most significant four bits of the Device Type address are a device type identifier. ...
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CAT5251 WIPER CONTROL AND DATA REGISTERS Wiper Control Register (WCR) The CAT5251 contains four 8-bit Wiper Control Registers, one for each potentiometer. The Wiper Control Register output is decoded to select one of 256 switches along its resistor array. The ...
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The basic sequence of the three byte instructions is illustrated in Figure 8. These three-byte instructions exchange data between the WCR and one of the Data Registers. The WCR controls the position of the wiper. The response of the wiper ...
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CAT5251 Figure 10. Increment/Decrement INC/DEC Command Issued SCK INSTRUCTION FORMAT Read Wiper Control Register (WCR) DEVICE ADDRESSES ¯¯¯ Write Wiper Control Register (WCR) DEVICE ADDRESSES ¯¯¯ ...
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Global Transfer Data Register (DR) to Wiper Control Register (WCR) DEVICE ADDRESSES Global Transfer Wiper Control Register (WCR) to Data Register (DR) DEVICE ADDRESSES ¯¯¯ ...
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CAT5251 PACKAGING OUTLINE DRAWINGS (1)(2) SOIC 24-Lead 300 mils ( PIN#1 IDENTIFICATION TOP VIEW D A SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard MS-013. Doc. No. MD-2017 Rev. ...
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TSSOP 24-Lead 4.4 mm (Y) e TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-153. © 2009 SCILLC. All rights reserved. Characteristics subject to change ...
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... Y: TSSOP ORDERING INFORMATION Orderable Part Number Resistance (kΩ) CAT5251WI-50-T1 CAT5251WI-00-T1 CAT5251YI-50-T2 CAT5251YI-00-T2 CAT5251WI50 CAT5251WI00 CAT5251YI50 CAT5251YI00 Notes: (1) All packages are RoHS compliant (Lead-free, Halogen-free). (2) This device used in the above example is a CAT5251WI-50-T1 (SOIC, Industrial Temperature, 50 kΩ, Tape & Reel). ...
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... F Update Instruction Format – Read Data Register (DR) and Write Data Register (DR) 26-Nov-08 G Change logo and fine print to ON Semiconductor 31-Jul-09 H Update Ordering Information table ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...