X9420 Xicor, X9420 Datasheet
X9420
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X9420 Summary of contents
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... Circuitry SI A0 REV 1.1.6 7/30/02 X9420 DESCRIPTION The X9420 integrates a single 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 SPI bus interface ...
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... The address inputs is used to set the least significant bit of the 8-bit slave address. A match in the slave address serial data stream must be made with the address input in order to initiate communication with the X9420. A maximum of 2 devices may occupy the SPI serial bus. REV 1.1.6 7/30/02 Potentiometer Pins ...
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... Finally loaded with the contents of its data register zero (DR0) upon power-up. The Wiper Counter Register is a volatile register; that is, its contents are lost when the X9420 is powered- down. Although the register is automatically loaded with the value in DR0 upon power-up, this may be different from the value present at power-down ...
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... WIP bit is read with a Read Status command. INSTRUCTIONS Address/Identification (ID) Byte The first byte sent to the X9420 from the host, following a CS going HIGH to LOW, is called the Address or Identification byte. The most significant four bits of the slave address are a device type identifier, for the X9420 this is fi ...
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... These instructions transfer data between the 1 0 host and the X9420; either between the host and one of the Data Registers or directly between the host and the WCR. These instructions are: – Read Wiper Counter Register—read the current wiper position of the pot, – ...
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... X9420 Figure 5. Three-Byte Instruction Sequence (Write) CS SCL Figure 6. Three-Byte Instruction Sequence (Read) CS SCL Figure 7. Increment/Decrement Instruction Sequence CS SCK Figure 8. Increment/Decrement Timing Limits SCK INC/DEC CMD Issued REV 1.1.6 7/30/ ...
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... X9420 Table 3. Instruction Set Instruction Read Wiper Counter 1 0 Register Write Wiper Counter 1 0 Register Read Data Register 1 0 Write Data Register 1 1 XFR Data Register Wiper Counter Register XFR Wiper Counter 1 1 Register to Data Register Increment/Decrement 0 0 Wiper Counter ...
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... X9420 on SO instruction opcode (sent by Host on SI instruction register opcode addresses (sent by X9420 on SO instruction register Data Byte opcode addresses (sent by host on SI) ...
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... Rising R R Edge instruction increment/decrement opcode (sent by master on SDA I/D I/D . instruction opcode (sent by X9420 on SO www.xicor.com HIGH-VOLTAGE WRITE CYCLE CS Rising Edge . . . I/D I/D Data Byte CS Rising W Edge ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Max. Device +70°C +85°C X9420-2.7 Limits Min. Typ. 150 40 X9420 +4.5 X9420-2.7 +2.7 X9420 -5.5 X9420-2.7 -5 -140 1.6 300 TOTAL 10/10/25 0.1 www.xicor.com Supply Voltage (V X9420 5V 10% 2 ...
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... X9420 D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.) Symbol Parameter I V Supply Current (Active) CC1 Supply Current CC2 CC (Non-volatile Write Current (Standby Input Leakage Current LI I Output Leakage Current LO V Input HIGH Voltage IH V Input LOW Voltage ...
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... X9420 A.C. TEST CONDITIONS I nput pulse levels V Input rise and fall times 10ns Input and output timing level V AC TIMING Symbol f SSI/SPI Clock Frequency SCK t SSI/SPI Clock Cycle Time CYC t SSI/SPI Clock High Time WH t SSI/SPI Clock Low Time WL t Lead Time ...
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... X9420 HIGH-VOLTAGE WRITE CYCLE TIMING Symbol t High-voltage Write Cycle Time (Store Instructions) WR XDCP TIMING Symbol t Wiper Response Time After The Third (Last) Power Supply Is Stable WRPO t Wiper Response Time After Instruction Issued (All Load Instructions) WRL t Wiper Response Time From An Active SCL/SCK Edge (Increment/Decrement ...
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... X9420 TIMING DIAGRAMS Input Timing CS t LEAD SCK MSB SI High Impedance SO Output Timing CS SCK t MSB SO ADDR SI Hold Timing CS SCK HOLD REV 1.1.6 7/30/02 t CYC ... ... HSU HOLD www.xicor.com LSB ... ...
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... X9420 XDCP Timing (for All Load Instructions) CS SCK MSB High Impedance SO XDCP Timing (for Increment/Decrement Instruction) CS SCK V W ADDR SI High Impedance SO Write Protect and Device Address Pins Timing REV 1.1.6 7/30/02 ... ... ... t WRID ... ... Inc/Dec Inc/Dec (Any Instruction WPASU www.xicor.com t WRL ...
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... X9420 APPLICATIONS INFORMATION Electronic potentiometers provide three powerful application advantages: (1) the variability and reliability of a solid- state potentiometer, (2) the flexibility of computer-based digital controls, and (3) the retentivity of nonvolatile memory used for the storage of multiple potentiometer settings or data. Basic Configurations of Electronic Potentiometers ...
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... X9420 PACKAGING INFORMATION 16-Lead Hermetic Dual In-Line Package Type D Seating Plane 0.200 (5.08) 0.150 (3.81) Min. 0.125 (3.18) 0.110 (2.79) 0.090 (2.29) Typ. 0.100 (2.54) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1.6 7/30/02 0.735 (18.67) 0.775 (19.69) Pin 1 0.700 (17.78) Ref. 0.065 (1.65) 0.038 (0.97) Typ. 0.060 (1.52) 0.320 (8.13) 0.290 (7.37) Typ. 0.311 (7.90) 0.015 (0.38) 0.008 (0.20) www ...
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... X9420 PACKAGING INFORMATION 16-Lead Plastic SOIC (300 Mil Body) Package Type S PIN 1 INDEX PIN 1 (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 1.1.6 7/30/02 0.014 (0.35) 0.020 (0.51) 0.403 (10.2 ) 0.413 ( 10. 0.0075 (0.19) 0.420" 0.010 (0.25) FOOTPRINT www.xicor.com 0.290 (7.37) 0.393 (10.00) ...
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... X9420 PACKAGING INFORMATION 0° - 8° See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1.6 7/30/02 14-Lead Plastic, TSSOP, Package Type V .025 (.65) BSC .169 (4.3) .177 (4.5) .193 (4.9) .200 (5.1) .0075 (.19) .002 (.05) .0118 (.30) .006 (.15) .010 (.25) .019 (.50) .029 (.75) Detail A (20X) www.xicor.com .252 (6.4) BSC .047 (1.20) Gage Plane Seating Plane ...
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... X9420 Ordering Information X9420 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. Xicor, Inc. makes no warranty of merchantability or fi ...