X9241A Xicor, X9241A Datasheet
X9241A
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X9241A Summary of contents
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... R2 REV 1.1.13 12/09/02 N OTE X9241A DESCRIPTION The X9241A integrates four digitally controlled potentiometers (XDCP monolithic CMOS integrated microcircuit. The digitally controlled potentiometer is implemented using 63 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the 2-wire bus interface ...
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... PRINCIPLES OF OPERATION of a mechanical The X9241A is a highly integrated microcircuit incorporating four resistor arrays, their associated registers and counters and the serial interface logic providing direct communication between the host and the XDCP potentiometers. www.xicor.com DIP/SOIC/TSSOP ...
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... SDA state changes during LOW SCL HIGH are reserved for indicating start and stop conditions. Start Condition All commands to the X9241A are preceded by the start condition, which is a HIGH to LOW transition of SDA while SCL is HIGH (t ). The X9241A continuously HIGH monitors the SDA and SCL lines for the start condition and will not respond to any command until this condition is met ...
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... Issue STOP Four instructions require a three-byte sequence to complete. These instructions transfer data between the host and the X9241A; either between the host and Proceed one of the Data Registers or directly between the host and the WCR. These instructions are: Read WCR, read the current wiper position of the selected pot ...
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... X9241A The Increment/Decrement command is different from the other commands. Once the command is issued and the X9241A has responded with an acknowledge, the master can clock the selected wiper up and/or down in one segment steps; thereby, providing a fine tuning capability to the host. For each SCL clock pulse (t while SDA is HIGH, the selected wiper will move one Figure 3 ...
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... X9241A Figure 6. Increment/Decrement Timing Limits INC/DEC CMD ISSUED SCL SDA Table 1. Instruction Set Instruction Read WCR Write WCR Read Data Register Write Data Register XFR Data Register to WCR XFR WCR ...
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... Data Register zero (DR0) upon power-up. REV 1.1.13 12/09/02 1 The WCR is a volatile register; that is, its contents are lost when the X9241A is powered-down. Although the register is automatically loaded with the value in DR0 upon power-up, it should be noted this may be different from the value present at power-down. Data Registers ...
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... Cascade Mode The X9241A provides a mechanism for cascading the arrays. That is, the sixty-three resistor elements of one array may be cascaded (linked) with the resistor elements of an adjacent array. The V order array must be connected to the V lower order array (See Figure 9). ...
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... X9241A Figure 9. Cascading Arrays = It is possible to connect three or all four potentiometers in cascade mode also possible to connect POT 3 to POT cascade. The requirements for external connections of V these cases. REV 1.1.13 12/09/02 Pot 0 WCR0 Pot 1 WCR1 Pot 2 WCR2 Pot 3 WCR3 External Connection www ...
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... Lead temperature (soldering, 10 seconds)........ 300°C I (10 seconds).................................................. ±6mA W RECOMMENDED OPERATING CONDITIONS Product Temperature Range X9241A Commercial Industrial ANALOG CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.) Symbol Parameter R End to end resistance TOTAL Power rating I Wiper current ...
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... X9241A D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.) Symbol Parameter l Supply current (active current (standby Input leakage current LI I Output leakage current LO V Input HIGH voltage IH V Input LOW voltage IL V Output LOW voltage OL Notes: (1) Absolute Linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a potentiometer ...
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... X9241A A.C. CONDITIONS OF TEST Input pulse levels V Input rise and fall times 10ns Input and output timing levels V SYMBOL TABLE WAVEFORM INPUTS OUTPUTS Must be Will be steady steady May change Will change from LOW from LOW to HIGH to HIGH May change Will change from HIGH ...
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... X9241A A.C. CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.) Symbol (5) f SCL clock frequency SCL (5) t Clock LOW period LOW (5) t Clock HIGH period HIGH (5) t SCL and SDA rise time R (5) t SCL and SDA fall time F (5)(9) T Noise suppression time constant (glitch filter) ...
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... X9241A Figure 12. Start Stop Timing SCL t SU:STA SDA (Data in) Figure 13. Write Cycle and Wiper Response Timing SCL Clock 8 SDA SDA IN Wiper Output REV 1.1.13 12/09/02 Start Condition t HD:STA Clock 9 STOP t STPWV ACK www.xicor.com Stop Condition t SU:STO START Characteristics subject to change without notice. ...
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... X9241A PACKAGING INFORMATION 20-Lead Plastic Dual In-Line Package Type P Pin 1 Index Pin 1 Seating Plane (3.81) 0.150 (2.92) 0.1150 0.014 (0.356) 0.008 (0.2032) NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH REV 1.1.13 12/09/02 1.060 (26.92) 0.980 (24.89) 0.900 (23.66) Ref. 0.10 (BSC) (2.54) 0.070 (1.778) 0.045 (1.143) ...
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... X9241A PACKAGING INFORMATION 20-Lead Plastic Small Outline Gull Wing Package Type S Pin 1 Index (4X) 7° 0.050 (1.27) 0.010 (0.25) 0.020 (0.50) 0°–8° 0.015 (0.40) 0.050 (1.27) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1.13 12/09/02 Pin 1 0.014 (0.35) 0.020 (0.50) 0.496 (12.60) 0.508 (12.90) X 45° 0.420" 0.007 (0.18) 0.011 (0.28) FOOTPRINT www ...
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... X9241A PACKAGING INFORMATION .0075 (.19) 0° - 8° See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1.13 12/09/02 20-Lead Plastic, TSSOP, Package Type V .025 (.65) BSC .260 (6.6) .252 (6.4) .002 (.05) .0118 (.30) .006 (.15) .019 (.50) .029 (.75) Detail A (20X) www.xicor.com .169 (4.3) .252 (6.4) BSC .177 (4.5) .047 (1.20) .010 (.25) ...
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... X9241A Ordering Information X9241A Device LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. ...