Electronic Components Datasheet Search |
|
ELM341P Datasheet(PDF) 2 Page - ELM Electronics |
|
ELM341P Datasheet(HTML) 2 Page - ELM Electronics |
2 / 4 page ELM341 Elm Electronics – Circuits for the Hobbyist < http://www.elmelectronics.com/ > Pin Descriptions Ordering Information These integrated circuits are available in either the 300 mil plastic DIP format, or in the 200 mil SOIC surface mount type of package. To order, add the appropriate suffix to the part number: 300 mil Plastic DIP............................... ELM341P 200 mil SOIC..................................... ELM341SM 2 of 4 All rights reserved. Copyright ©1999 Elm Electronics. Every effort is made to verify the accuracy of information provided in this document, but no representation or warranty can be given and no liability assumed by Elm Electronics with respect to the accuracy and/or use of any products or information described in this document. Elm Electronics will not be responsible for any patent infringements arising from the use of these products or information, and does not authorize or warrant the use of any Elm Electronics product in life support devices and/or systems. Elm Electronics reserves the right to make changes to the device(s) described in this document in order to improve reliability, function, or design. VDD (pin 1) This pin is the positive supply pin. Internal circuitry connected to this pin is used to provide power on reset of the microprocessor, so an external reset signal is normally not required. Refer to the Electrical Characteristics section for further information. R1 (pin 2) One of the two resistance input pins. A temperature dependent resistance is usually connected to this input for heating or under- temperature alarm type applications. When the value of this resistor is greater than the value of the resistance connected to pin 3 (for three successive measurements) the output will be driven high. R2 (pin 3) The reference resistance is connected to this pin for heating applications (and the temperature dependent resistance is connected here for cooling applications). The other end of this resistor is connected to the integrating capacitor. reset (pin 4) The active low reset input. An internal pullup resistor is provided for convenience. If unused, this pin may be connected to VDD or left open. Cap (pin 5) Temperature measurements are made by determining the time to charge and discharge this integrating capacitor. Pin 5 forces the capacitor to a known voltage for these measurements though, resulting in large current flows. To limit these capacitor currents, and protect the ELM341, a series resistor must be connected to this pin. The value of the resistance, and of the capacitance, is not critical to the measurements. MIP (pin 6) This pin provides a logic high level output while the ELM341 is busy (measurements are in progress). It is suitable for directly driving an LED through a current limiting resistor. As a warning, this output pulses rapidly if either resistor input is found to be open circuited. Out (pin 7) The output pin assumes a logic high state once the resistance of R1 exceeds that of R2 for three successive measurement cycles. The output is maintained until R1 is less than R2 by the hysteresis amount for an additional three counts. Note: Consideration must be given to the fact that this output is in a tri-state (open circuit) mode each time the circuit wakes from sleep to take a measurement. This mode lasts for approximately 300µs, which is not generally long enough to affect a relay output, but certainly long enough to be seen by high-speed logic circuits. VSS (pin 8) Circuit common is connected to this pin. This is the most negative point in the circuit. ELM341DSB |
Similar Part No. - ELM341P |
|
Similar Description - ELM341P |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |