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X9440YP24I-2.7 Datasheet(PDF) 1 Page - Intersil Corporation |
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X9440YP24I-2.7 Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 21 page 1 ® FN8200.0 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. X9440 Mixed Signal with SPI Interface Dual Digitally Controlled Potentiometer (XDCP™) & Voltage Comparator FEATURES • Two digitally controlled potentiometers and two voltage comparators in one package • SPI serial interface • Register oriented format —Direct read/write wiper position —Store as many as four positions per pot • Fast response comparator • Enable, latch, or shutdown comparator outputs through the ACR • Auto-recall of WCR and ACR data from R0 • Hardware write protection, WP • Separate analog and digital/system supplies • Direct write cell —Endurance–100,000 data changes per bit per register —Register data retention–100 years • 16-bytes of EEPROM memory • Power saving feature and low noise • Two 10k Ω or two 2.5kΩ potentiometers • Resolution: 64 taps each pot • 24-lead TSSOP and 24-Lead SOIC packages DESCRIPTION The X9440 integrates two non volatile digitally con- trolled potentiometers (XDCP) and two voltage com- parators on a CMOS monolithic microcircuit. The X9440 contains two resistor arrays, each com- posed of 63 resistive elements. Between each ele- ment and at either end are tap points accessible to the wiper elements. The position of the wiper element on the array is controlled by the user through the SPI serial bus interface. Each potentiometer has an associated voltage com- parator. The comparator compares the external input voltage VNI with the wiper voltage VW and sets the out- put voltage level to a logic high or low. Each resistor array and comparator has associated with it a wiper counter register (WCR), analog control register (ACR), and eight 6 bit data registers that can be directly written and read by the user. The contents of the wiper counter register controls the position of the wiper on the resistor array. The contents of the analog control register controls the comparator and its output. The potentiometer is programmed with a SPI serial interface. BLOCK DIAGRAM VOUT (0,1) (R0-R3)0,1 Interface and Control Circuitry SCK S0 SI A1 CS HOLD VH (0,1) VL (0,1) WP VW (0,1) VNI (0,1) + – WCR0,1 (R0-R3)0,1 ACR0,1 A0 Data Sheet March 28, 2005 |
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