WMS7201010T WINBOND [Winbond], WMS7201010T Datasheet
WMS7201010T
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WMS7201010T Summary of contents
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WMS7202 256-TAP DUAL-CHANNEL NON-VOLATILE DIGITAL POTENTIOMETER PRELIMINARY Publication Release Date: January 2003 - 1 - Revision 1.1 ...
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GENERAL DESCRIPTION The WMS7202 is a 256-tap, dual-channel non-volatile digital potentiometer available in 10KΩ, 50KΩ and 100KΩ end-to-end resistances. These devices can be used as a three-terminal potentiometer two terminal variable resistor in a wide variety ...
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BLOCK DIAGRAM CLK Serial Serial CS CS SDI SDI Interface Interface SDO SDO Memory NV Memory R/B Control Control VDD VDD VDD NVMEM0 (Non-volatile Memory 0; ...
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TABLE OF CONTENTS 1. GENERAL DESCRIPTION.................................................................................................................. 2 2. FEATURES ......................................................................................................................................... 2 3. BLOCK DIAGRAM .............................................................................................................................. 3 4. TABLE OF CONTENTS ...................................................................................................................... 4 5. PIN CONFIGURATION ....................................................................................................................... 5 6. PIN DESCRIPTION ............................................................................................................................. 6 7. FUNCTIONAL DESCRIPTION............................................................................................................ 7 7.1. Potentiometer and ...
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PIN CONFIGURATION SDO CLK 2 13 SDI VA1 VW1 VB1 VB2 R VA2 VW2 14 PDIP ...
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PIN DESCRIPTION PIN NAME PIN NO I/O 2 CLK SDI I 13 SDO O R VA1 - 10 VB1 - ...
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FUNCTIONAL DESCRIPTION The WMS7202 series, a family of 256-tap, nonvolatile digitally programmable potentiometers is designed to operate as both a potentiometer or a variable resistor depending upon the output configuration selected. The chip can store four 9-bit words in ...
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OLATILE EMORY Each channel has four NVMEM positions available for storing the output buffer operating mode and the potentiometer setting. These NVMEM positions can be directly written through the SPI using a write command (#5) ...
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D C AISY HAIN Multiple devices can be controlled by the same bus without the need for extra CS lines from the microcontroller by daisy chaining the devices with the SDO of the first device connected to SDI of ...
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ERIAL ATA NTERFACE The WMS7202 contains a four-wire SPI interface: • SDO (Serial Data Output) Used for reading out the internal register contents and for daisy chaining multiple devices. • SDI (Serial Data Input) Used for ...
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TABLE 3 – A1 AND A0 ADDRESS BIT DECODE TABLE [A1 A0] Channel A3 and A2 are the address bits that decide which NVMEM memory to be accessed, as shown in the table below. TABLE 4 – A3 AND A2 ...
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I S NSTRUCTION ET Inst Instruction Byte No D15 D14 D13 D12 D11 D10 ...
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SDI must be valid on the rising edge of the clock, SDO is valid on the falling edge of the clock Take CS HIGH after the command ...
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Inst. Comman Command Byte No. d Name: 3 Write Tap Register Down ...
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Reading Tap Registers and NVMEM Locations The contents of the tap register for any channel or any NVMEM location can be read back through the SDO pin. When a command is sent, the data is clocked out on the ...
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TIMING DIAGRAMS CLK t LEAD CS t DSU MSB SDI t LAC MSB SDO t RSU R/B t WPSU WP FIGURE 6 – WMS7202 TIMING DIAGRAM t t CYC WMS7202 ...
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PARAMETER SPI Clock Cycle Time SPI Clock HIGH Time SPI Clock LOW Time Lead Time Lag Time SDI Setup Time SDI Hold Time CS to SDO – SPI Line Acquire CS to SDO – SPI Line Release CLK to SDO ...
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ABSOLUTE MAXIMUM RATINGS TABLE 11 – ABSOLUTE MAXIMUM RATINGS Condition Junction temperature Storage temperature Voltage applied to any pad Note: Exposure to conditions beyond those listed under: Absolute Maximum Ratings, may adversely affect the ...
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ELECTRICAL CHARACTERISTICS TABLE 12 – ELECTRICAL CHARACTERISTICS All Parameters apply across specified operating ranges unless noted (V Typical values: V =5V and T=25°C DD PARAMETER Rheostat Mode Nominal Resistance Different Non Linearity Integral Non Linearity 1 Rheostat Tempco 2 ...
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Output Leakage Current 1 Input Capacitance 1 Output Capacitance Power Requirements 1 Operating Voltage Operating Current Operating Current Standby Current Power Supply Rejection Ratio Note: 1. Not subject to production test; 2. Only on Final Test noted. I ...
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T C EST IRCUITS 1LSB WMS7202 *Assume infinite input impedance Potentiometer divider nonlinearity error test circuit (INL, DNL) No Connection WMS7202 ...
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TYPICAL APPLICATION CIRCUIT Vin WMS7202 OUT − R (256 256 R = Total resistance of potentiometer Wiper setting for WMS7202 ...
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I = 32mA V REFH WMS7202 GND FIGURE 10 – WMS7202 TRIMMING VOLTAGE REFERENCE VDD 2 13 CLK SDO 3 12 SDI VA1 VW1 5 10 GND VB1 6 9 R/B VB2 7 ...
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Vin CONTROL 1/2 WMS7202 1 CS\ 2 CLK 3 SDI 4 WP\ FIGURE 12 – PROGRAMMABLE LOW-PASS FILTER 1/2 WMS7202 14 VDD 13 SDO 5 6 R/B\ PROGRAMMABLE LOW-PASS FILTER - 24 ...
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L C AYOUT ONSIDERATIONS A 0.1µF bypass capacitor as close as possible to the V Often this can be done by placing the surface mount capacitor on the bottom side of the PC board, directly between the V and ...
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PACKAGE DRAWINGS AND DEMINSIONS SYMBOL DIMENSION (MM) DIMENSION (INCH) MIN. NOM MAX. MIN. 0.381 0.015 0.406 0.457 0.508 0.016 1.397 ...
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D Y SEATING PLANE b SYMBOL FIGURE 15 – 14L SOIC – 150MIL DIMENSION (MM) DIMENSION (INCH) MIN. ...
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D Y DIMENSION (MM) SYMBOL MIN. NOM A A1 0.05 A2 0.80 0.90 L 0.50 0.60 E 6.40 BSC HE 4.30 4.40 b 0.19 D/mm 4.90 5.00 Y 0.076 e 0.65 BSC e1 0 FIGURE 16 – 14L ...
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ORDERING INFORMATION Winbond’s WinPot Part Number Description: WMS72 XX XXX X For the latest product information, access Winbond’s worldwide website at http://www.winbond-usa.com Winbond WinPot Products Features: • 01: Single channel with SPI Interface • 02: Dual channels with SPI ...
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VERSION HISTORY VERSION DATE PAGE 1.0 June 2002 1.1 Jan. 2003 The contents of this document are provided only as a guide for the applications of Winbond products. Winbond makes no representation or warranties with respect to the accuracy ...