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  1. #31
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    Quote Originally Posted by Shankanator View Post
    America isnt dumb and lazy ... and its an amazing country ... imagine going to a country that is dirt poor with people starving to death . Some people just dont know what there talking about
    Exactly what Iverson said, your argument is basically like comparing a new HDTV to a 1990 TV, you just don't do it.

  2. #32
    Flengo Jr.'s Avatar
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    Quote Originally Posted by LetsAllKillPB View Post
    Georgia. Its In School Detention
    What part of GA? I live in GA and i have never heard of In school Detention. Here we just have OSS,


    https://www.mpgh.net/forum/207-combat...base-yolo.html

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    Is this so neo[/SPOILER]

  3. #33
    omdthduxaqhd's Avatar
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    DS1669-10

    ebay store:
    items in UTSOURCE STORE store on eBay!

    email:
    sales@utsource.net

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    Find All China Products On Sale from UTSOURCE on Aliexpress.com - STK433-330,UPA1556H:N - CHANNEL POWER MOS FET ARRAY SWITCHING TYPE,SG3644MUAL HIGH SPEED DRIVER and more


    4
    DS1669-10DS1669-10 T-13/4 (5 mm) Diffused LED Lamps
    DallastatTM Electronic Digital Rheostat

    FEATURES
    Replaces mechanical variable resistors
    PIN ASSIGNMENT DS1669
    Electronic interface provided for digital as well as manual control
    Wide differential input voltage range between 4.5 and 8 volts
    Wiper position is maintained in the absence of power
    Low-cost alternative to mechanical controls
    Applications include volume, tone, contrast,
    (RH) 1
    D 3 (RL) 4
    brightness, and dimmer control
    Available in 8-pin SOIC and 8-pin DIP
    packages
    8-Pin SOIC (208-mil)
    See Mech. Drawings Section
    Standard resistance values for Dallastat:
    ?DS1669-10 ~ 10 k??DS1669-50 ~ 50 k??DS1669-100 ~ 100 k? Operating Temperature Range
    ?Industrial: -40°C to +85°C
    (RH) +V UC DC D RW
    (RL) -V
    8-Pin DIP (300-mil)
    See Mech. Drawings Section
    PIN DESCRIPTION DS1669
    RH - High Terminal of Potentiometer RW - Wiper Terminal of Potentiometer RL - Low Terminal of Potentiometer
    -V, +V - Voltage Inputs
    UC - Up Contact Input
    D - Digital Input
    DC - Down Contact Input
    DESCRIPTION
    The DS1669 DallastatTM is a digital rheostat or potentiometer. This device provides 64 possible uniform
    tap points over the entire resistive range. The standard resistive ranges are 10 k? 50 k? and 100 k? The Dallastat can be controlled by either a switch contact closure input or a digital source input such as a CPU. Wiper position is maintained in the absence of power through the use of a EEPROM memory cell array. The EEPROM cell array will withstand more than 50,000 writes.
    The DS1669 is offered in two standard IC packages which include an 8-pin 300-mil DIP and an 8-pin
    208-mil SOIC. The DS1669 can be configured to operate using a single pushbutton, dual pushbutton or digital source input by varying power-on conditions. This is illustrated in Figures 1 and 2. The DS1669 pinouts allow access to both ends of the potentiometer RL, RH, and the wiper, RW. Control inputs include
    the digital source input, D, the up contact input, UC, and the down contact input, DC. Other pins include the positive, +V, and negative, -V, supply inputs. The DS1669 is specified to operate from -40°C to
    OPERATION
    The DS1669 can be configured to operate from a single contact closure, dual contact closure, or a digital
    source input. Figures 1 and 2 illustrate both contact closure configurations. Contact closure is defined as a transition from a high level to a low level on the up contact (UC) or down contact (DC) inputs. All three control inputs are active when in a low state and are inactive when in a high state.
    The DS1669 interprets input pulse widths as the means of controlling wiper movement. A single pulse input on the UC, DC, or D input terminals will cause the wiper position to move 1/64th of the total resistance. A transition from a high to low on these inputs is considered the beginning of pulse activity or contact closure. A single pulse must be greater than 1 ms but lasting no longer than 1 second. Pulse timings are shown in Figure 5.
    Repetitive pulsed inputs can be used to step through each resistive position of the device in a relatively fast manner (see Figure 5b). The requirement for repetitive pulsed inputs is that pulses must be separated by a minimum time of 1 ms. If the input is not allowed to be inactive (high) for at least 1 ms, the DS1669 will interpret repetitive pulses as a single pulse.
    Pulse inputs lasting longer than 1 second will cause the wiper to move one position every 100 ms following the initial 1-second hold time. The total time to transcend the entire potentiometer using a continuous input pulse is given by the formula below:
    ? second + 63 X 100 ms = 7.3 (seconds)
    Single contact closure operation allows the user to control wiper movement in either direction from a single pushbutton input. Figure 1 presents a typical single pushbutton configuration. The UC input is used to increment and decrement wiper position for single pushbutton mode of operation. The DC input provides no functionality in this mode but must be connected to the positive supply voltage (VCC). The digital source input (D) can be allowed to float.
    On device power-up, the configuration shown in Figure 1 must exist in order to enter the single contact closure mode of operationespecially and specifically, the (DC) input’s direct connection to the positive supply voltage (VCC).
    The initial direction of wiper movement in single pushbutton operation is determined by prior activity. The initial direction of wiper movement will be opposite to that of the previous activity. Changing the direction of wiper movement in single pushbutton mode is accomplished by allowing a period of inactivity on the UC input of (greater than) 1 second, or by moving the wiper to the end of the potentiometer range. This will occur regardless of whether the input is a continuous pulse, a sequence of repetitive pulses or a single pulse.
    The digital source input, D, was designed for microprocessor or controlled applications. This control input manipulates the device in the same manner as the single pushbutton configuration, controlling movement of the wiper position in both upward and downward directions. One added feature over the single pushbutton configuration is the ability to increment or decrement wiper position at a faster rate. Digital source input control is available regardless of the type of pushbutton configuration.
    Dual pushbutton mode of operation is entered when the DC input is floated on power-up. If interfacing contact closure control inputs to digital logic, the DC input must be interfaced to an open drain drive which is high impedance during power-up; see Figure 2B. This will prevent the device from entering a single pushbutton mode of operation.
    In dual pushbutton mode, each direction is controlled by the up contact (UC) and down contact (DC) inputs, respectively. No wait states are required to change wiper direction in dual pushbutton mode. In dual pushbutton mode, as the wiper position reaches the end of the potentiometer, the direction of wiper movement will not change. Wiper position will remain at the potentiometers?end until an opposite direction input is given.
    All contact closure control inputs, UC, DC, and D, are internally pulled-up by a 100 k?resistance. The UC and DC inputs are internally debounced and require no external components for input signal conditioning.
    DS1669 SINGLE PUSHBUTTON CONFIGURATION (TYPICAL EXAMPLE)
    Figure 1
    DS1669 DUAL PUSHBUTTON CONFIGURATION (TYPICAL APPLICATION)
    Figure 2A
    DS1669 DUAL PUSHBUTTON CONFIGURATION (TYPICAL APPLICATION)
    Figure 2B
    The DS1669 is provided with two supply inputs -V and +V. The maximum voltage difference between the two supply inputs is +8.0 volts. The minimum voltage difference is +4.5 volts. All input levels are referenced to the negative supply input, -V. The voltage applied to any Dallastat terminal must not exceed the negative supply voltage (-V ) by -0.5 or the positive supply voltage (+V) by +0.5 volts. The minimum logic high level must be +2.4 volts with reference to the -V supply voltage input for +V=5V. A logic low level with reference to the -V supply voltage has a maximum value of +0.8 volts. Dallastats exhibit a typical wiper resistance of 400 ohms with a maximum wiper resistance of 1000 ohms. The maximum wiper current allowed through the Dallastat is specified at 1 milliamps (see DC Electrical Characteristics).
    NONVOLATILE WIPER SETTINGS
    Dallastats maintain the position of the wiper in the absence of power. This feature is provided through the
    use of EEPROM type memory cell arrays. During normal operation the position of the wiper is determined by the input multiplexer. Periodically, the multiplexer will update the EEPROM memory cells. The manner in which an update occurs has been optimized for reliability, durability, and performance. Additionally, the update operation is totally transparent to the user.
    When power is applied to the Dallastat, the wiper setting will be the last recorded in the EEPROM memory cells. If the Dallastat setting is changed after power is applied, the new value will be stored after a delay of 2 seconds. The initial storage of a new value after power-up occurs when the first change is made, regardless of when this change is made.
    After the initial change on power-up, subsequent changes in the Dallastat EEPROM memory cells will occur only if the wiper position of the part is moved greater than 12.5% of the total resistance range. Any wiper movement after initial power-up which is less than 12.5% will not be recorded in the EEPROM memory cells. Since the Dallastat contains a 64-to-1 multiplexer, a change of greater than 12.5% corresponds to a change of the fourth LSB.
    Changes or storage to the EEPROM memory cells must allow for a 2-second delay to guarantee that updates will occur. The EEPROM memory cells are specified to accept greater than 80,000 writes before a wear-out condition. If the EEPROM memory cells do reach a wear-out condition, the Dallastat will still function properly while power is applied. However, on power-up the device’s wiper position will be that of the position last recorded before memory cell wear-out.
    FLOWCHART: ONE-BUTTON OPERATION AND ELECTRICAL CONTROL
    Figure 3
    CONTACT OPEN AND CONTACT CLOSURE TIMING IS 1s ?15%.
    FLOWCHART: TWO-BUTTON OPERATION Figure 4
    CONTACT OPEN AND CONTACT CLOSURE TIMING IS 1sec. ?15%.
    ABSOLUTE MAXIMUM RATINGS*
    Voltage on Any Pin Relative to -V -V -0.5V + 8.0V
    Operating Temperature -40°C to +85°C Storage Temperature -55°C to +125°C Soldering Temperature 260°C for 15 seconds
    * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
    RECOMMENDED DC OPERATING CONDITIONS (-40°C to +85°C)
    PARAMETER
    SYMBOL
    + Supply Voltage
    -V + 4.5
    -V + 8.0
    - Supply Voltage
    +V - 8.0
    +V - 4.5
    Rheostat Inputs
    RH,RW,RL
    -V - 0.5
    +V + 0.5
    Logic Input 1
    Logic Input 0
    DC ELECTRICAL CHARACTERISTICS: (-40°C to +85°C; -V to +V = 4.5V to 8.0V)
    PARAMETER
    SYMBOL
    +, - Supply Current
    Supply Current,
    Idle State
    Wiper Resistance
    Wiper Current
    Rheostat Current
    IH, IL
    Power-Up Time
    Input Leakage
    AC ELECTRICAL CHARACTERISTICS (-40°C to +85°C; -V to +V = 4.5V to 8.0V)
    PARAMETER
    SYMBOL
    Digital Input
    Pulse Width
    1, 7, 8
    Contact
    Pulse Width
    1, 7, 8
    Repetitive Input
    Pulse High Time
    1, 7, 8
    Continuous
    Input Pulse
    1, 7, 8
     ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C)
    PARAMETER
    SYMBOL
    End-to-End
    Resistor Tolerance
    Absolute Linearity
    Relative Linearity
    -3 dB Cutoff
    Frequency Noise
    fcutoff
    Temperature
    Coefficient
    CAPACITANCE (TA = 25°C)
    PARAMETER
    SYMBOL
    Input Capacitance
    Output Capacitance
    TIMING DIAGRAMS Figure 5
    1. All inputs; UV, DC, and D are internally pulled up with a resistance of 100k?
    2. Input logic levels are referenced to -V.
    3. ICC is the internal current that flows between -V and +V.
    4. Input leakage applies to contact inputs UC and DC and digital input (D).
    5. Wiper current and rheostat currents are the maximum currents which can flow in the resistive elements.
    6. Capacitance values apply at 25°C.
    7. Input pulse width is the minimum time required for an input to cause an increment or decrement. If the UC, DC or D input is held active for longer than 1 second, subsequent increments or decrements will occur on 100 ms intervals until the inputs UC, DC, and/or D is released to VIH.
    8. Repetitive pulsed inputs on UC, DC, or D will be recognized as long as the pulse repetition occurs within 1 second of each other. Pulses occurring faster than 1 ms apart may not be recognized as individual inputs but can be interpreted a constant input.
    9. Idle state supply current is measured with no pushbutton depressed and with the wiper. RW tied to a
    CMOS load.
    10. Maximum time required for the Dallastat to determine single or dual pushbutton operation after input supply has reached 10% of recommended supply operating conditions.
    11. Absolute linearity is used to determine wiper voltage versus expected voltage as determined by wiper position.
    12. Relative linearity is used to determine the change in voltage between successive tap positions.
    13. -3 dB cutoff frequency characteristics for the DS1669 depend on potentiometer total resistance: DS1669-010; 1 MHz, DS1669-050; 200 kHz, DS1669-100; 100 kHz.
    14. Valid at 25C only.
    DS1669-10DS1669-10

  4. #34
    Jazzacar's Avatar
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    That's a stupid reason to get suspended. Make a formal complaint to the department of education, if you want revenge. I would
    I'm a forum addict. Please don't hurt me

  5. #35
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    Oh great, a spam bot :\...
    anyway, would you rather have ISS and actually get to do your work or get OSS and go back to school and probably missed a test and end up failing the grade?


  6. #36
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    Quote Originally Posted by That_Kid View Post
    What part of GA? I live in GA and i have never heard of In school Detention. Here we just have OSS,
    Warner Robins/Bonaire

    ---------- Post added at 03:54 PM ---------- Previous post was at 03:52 PM ----------

    Quote Originally Posted by Digits2012 View Post
    Oh great, a spam bot :\...
    anyway, would you rather have ISS and actually get to do your work or get OSS and go back to school and probably missed a test and end up failing the grade?
    & I know right damn SpamBots -_-. & I'm suspended but I have my ISS work. I didnt wanna get behind on school work.
    Credits go to Invalid_Username. Thanks bro!




    PotHeads hang here: https://www.mpgh.net/forum/forumdisplay.php?f=170

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