DS1846E-010/T&R Maxim Integrated Products, DS1846E-010/T&R Datasheet
DS1846E-010/T&R
Related parts for DS1846E-010/T&R
DS1846E-010/T&R Summary of contents
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... Industrial operating temperature: -40ºC to +85ºC ORDERING INFORMATION DS1846E-010 DS1846E-010/T&R (Tape-and-Reel Version) OVERVIEW The DS1846 NV tri-potentiometer, memory, and MicroMonitor™ consists of two 10kW, 100-position linear taper potentiometers, one 100kW, 256-position linear taper potentiometer; 256 bytes of EEPROM memory; and a MicroMonitor. The device provides an ideal method for setting bias voltages and currents in control applications using a minimum of circuitry ...
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The EEPROM memory allows a user to store configuration or calibration data for a specific system or device and provides control of the potentiometer wiper settings. Any type of user information can reside in the first 248 bytes (00h to ...
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PIN DESCRIPTIONS V —Power-Supply Terminal. The DS1846 will support supply voltages ranging from +4.5V to +5.5V. CC GND—Ground Terminal SDA—2-Wire Serial Data Interface. The serial data pin is for serial data transfer to and from the DS1846. The pin is ...
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MEMORY ORGANIZATION The EEPROM of the DS1846 contains 256 bytes. Bytes 00h to F7h are general-purpose user memory. The next three bytes, F8h, F9h, and FAh, contain the wiper settings for each of the potentiometers (see Table 1). The last ...
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OPERATION Clock and Data Transitions: The SDA pin is normally pulled high with an external resistor or device. Data on the SDA pin may only change during SCL low time periods. Data changes during SCL high periods indicates a ...
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DS1846 is not latched into EEPROM. Note that in order for eight bytes to be stored sequentially (and to prevent looping around), the address byte must be set to the beginning of the desired page (three LSBs of the address ...
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SERIAL PORT OPERATION The 2-wire serial port interface supports a bidirectional data transmission protocol with device addressing. A device that sends data on the bus is defined as a transmitter, and a device receiving data as a receiver. The ...
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Acknowledge: Each receiving device, when addressed, is obliged to generate an acknowledge after the byte has been received. The master device must generate an extra clock pulse that is associated with this acknowledge bit. A device that acknowledges must pull ...
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WRITE PROTECT The WP pin protects EEPROM data and potentiometer position from alteration in an application. This pin must be open or connected high to protect data from alteration. WP has an internal pullup (R READING AND WRITING THE POTENTIOMETER ...
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DEVICE OPERATION Power Monitor The DS1846 detects out-of-tolerance power-supply conditions and warns a processor-based system of an impending power failure. When V RST and signals. On power-up, RST and RST power supply and processor to stabilize. Pushbutton Reset The DS1846 ...
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TYPICAL APPLICATION Figure 4 To 2-Wire Master To Microprocessor Interrupt Potentiometer Terminals Note: can be used to produce a reset, which is shown by the dotted line in Figure 4. NMI The following equations are used to calculate the resistor ...
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TIMING DIAGRAM: PUSHBUTTON RESET Figure 5 TIMING DIAGRAM: NONMASKABLE INTERRUPT Figure 6 t NMI ...
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TIMING DIAGRAM: POWER-DOWN Figure 7 TIMING DIAGRAM: POWER-UP Figure ...
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ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Range Programming Temperature Range Storage Temperature Range Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions ...
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DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Input Leakage I IL Current Standby Current I STBY V OL1 Low-Level Output Voltage (SDA) V OL2 I/O Capacitance C I/O Output at 2. Output at NMI OH 2.4V Output at 0.4V ...
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AC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL SCL Clock Frequency f Bus Free Time t Between Stop and Start Condition Hold Time (Repeated) t HD:STA Start Condition Low Period of SCL t Clock High Period of SCL t HIGH Clock Data Hold ...
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ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C; V PARAMETER SYMBOL Wiper Resistance R W End-to-End Resistance Absolute Linearity Relative Linearity -3dB Cutoff f cutoff Frequency Temperature Coefficient CONDITION MIN TYP 7 10kW pot 70 100kW pot -1 10kW pot -3 100kW ...
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NOTES: 1) All voltages are referenced to ground. 2) I/O pins of fast-mode devices must not obstruct the SDA and SCL lines specified with V = 5.0V and control port logic pins are driven to the ...