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resources:eval:user-guides:eval-adicup360:hardware:adt7420 [20 Dec 2016 22:04] – Brandon Busheyresources:eval:user-guides:eval-adicup360:hardware:adt7420 [03 Mar 2023 07:48] (current) – updated the design files download link Joyce Velasco
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 ====== ADT7420 Digital Temperature PMOD ====== ====== ADT7420 Digital Temperature PMOD ======
  
-The ADT7420 is a high accuracy digital temperature sensor offering breakthrough performance over a wide industrial range. It contains an internal band gap reference, a temperature sensor, and a 16-bit ADC to monitor and digitize the temperature to 0.0078°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625°C). The ADC resolution is a user programmable mode that can be changed through the serial interface.+The [[ADI>ADT7420]] is a high accuracy digital temperature sensor offering breakthrough performance over a wide industrial range. It contains an internal band gap reference, a temperature sensor, and a 16-bit ADC to monitor and digitize the temperature to 0.0078°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625°C). The ADC resolution is a user programmable mode that can be changed through the serial interface.
  
 The ADT7420 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 μA. The ADT7420 has a shutdown mode that powers down the device and offers a shutdown current of typically 2.0 μA at 3.3 V. The ADT7420 is rated for operation over the −40°C to +150°C temperature range. The ADT7420 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 μA. The ADT7420 has a shutdown mode that powers down the device and offers a shutdown current of typically 2.0 μA at 3.3 V. The ADT7420 is rated for operation over the −40°C to +150°C temperature range.
  
-Pin A0 and Pin A1 are available for address selection, giving the ADT7420 four possible I2C addresses. The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT pin and CT pin can operate in comparator and interrupt event modes. [[http://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/PulsarPMODs.html|website.]]+Pin A0 and Pin A1 are available for address selection, giving the ADT7420 four possible I2C addresses. The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT pin and CT pin can operate in comparator and interrupt event modes.  For general board details and to buy a board, please visit the [[ADI>EVAL-ADT7420-PMDZ]] product page.
  
-{{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod.jpg?500 |}} +{{ :resources:eval:user-guides:eval-adicup360:hardware:adt7420:eval-adt7420-pmdz.png?350 |}}
-\\ +
-\\ +
-\\ +
-\\ +
-\\+
  
 ===== Hardware Setup ===== ===== Hardware Setup =====
  
-The PMOD board is small in size with dimensions approximately 1 inch in width by 1 inches in length.  There are a few options on the hardware I'd like to point out for you, in order to use the board.+The PMOD board is small in size with dimensions approximately 1 inch in width by 1 inch in length.  There are a few options on the hardware I'd like to point out for you, in order to use the board.
  
 ==== Power Supply Requirements ==== ==== Power Supply Requirements ====
  
 When using the ADT7420 PMOD board, the 3.3V power for the PMOD comes directly from the host board it is connected to.  The power from the host is generally capable of providing up to 100 mA at 3.3V, but for complete PMOD power specifications please [[https://www.digilentinc.com/Pmods/Digilent-Pmod_%20Interface_Specification.pdf|click here]]. When using the ADT7420 PMOD board, the 3.3V power for the PMOD comes directly from the host board it is connected to.  The power from the host is generally capable of providing up to 100 mA at 3.3V, but for complete PMOD power specifications please [[https://www.digilentinc.com/Pmods/Digilent-Pmod_%20Interface_Specification.pdf|click here]].
 +
 +The fastest way to tell if the EVAL-ADT7420-PMDZ board is powered is by seeing if the LED on board is illuminated.  The LED can be found here on the board.
 +{{ :resources:eval:user-guides:eval-adicup360:hardware:adt7420:adt7420_power_led.png?300 |}}
  
 ==== Digital Interface (PMOD) ==== ==== Digital Interface (PMOD) ====
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 The PMOD interface is a series of standardized digital interfaces for various digital communication protocols such as SPI, I2C, and UART.  These interface types were standardized by Digilent, which is now a division of National Instruments.  Complete details on the PMOD specification can be found [[https://www.digilentinc.com/Pmods/Digilent-Pmod_%20Interface_Specification.pdf|here]]. The PMOD interface is a series of standardized digital interfaces for various digital communication protocols such as SPI, I2C, and UART.  These interface types were standardized by Digilent, which is now a division of National Instruments.  Complete details on the PMOD specification can be found [[https://www.digilentinc.com/Pmods/Digilent-Pmod_%20Interface_Specification.pdf|here]].
  
-The specific interface used for the EVAL-ADT7420-PMDZ boards is the extended I2C.  In general ADI has adopted the extended I2C connector for all PMOD devices which have an I2C interface.  It provides flexibility to add/daisy chain multiple I2C devices onto the same bus.+The specific interface used for the EVAL-ADT7420-PMDZ boards is the extended I2C.  In general, ADI has adopted the extended I2C connector for all PMOD devices which have an I2C interface.  It provides flexibility to add/daisy chain multiple I2C devices onto the same bus.
  
 ^ P1 Pin Number ^ Pin Function ^ Mnemonic ^ ^ P1 Pin Number ^ Pin Function ^ Mnemonic ^
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-^ P1 Pin Number ^ Pin Function ^ Mnemonic ^ +===== Jumper Configuration and Solder Links =====
-| Pin 1  | Chip Select         | /CS  | +
-| Pin 2  | Master Out Slave In | MOSI | +
-| Pin 3  | Master In Slave Out | MISO | +
-| Pin 4  | Serial Clock        | SCLK | +
-| Pin 5  | Digital Ground      | DGND | +
-| Pin 6  | Digital Power       | VDD  | +
-| Pin 7  | Chip Select         |    | +
-| Pin 8  | Chip Select |    | +
-| Pin 9  | Chip Select |    | +
-| Pin 10 | Chip Select |    | +
-| Pin 11 | Digital Ground      | DGND | +
-| Pin 12 | Digital Power       | VDD  |+
  
-{{ :resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pmod_pinout.png?700 |}}+The EVAL-ADT7420-PMDZ has some optional modes of operation to increase flexibility when using multiple EVAL-ADT7420-PMDZ boards in a single system and to help alert the Over/under/critical temperature readings.  Each configuration is explained below.
  
-===== Getting Started =====+==== ADT7420 I2C Address Selection Pins ====
  
-Using the EVAL-ADT7420-PMDZ is very simple.  To get started measuring temperature, you are going to need the following equipment: +The ADT7420 can have up to 4 unique I2C device addresses, depending on the logic level of pins A1 and A0.  The default configuration for the EVAL-ADT7420-PMDZ is for A1 and A0 to be tied low, so the default I2C address is 0x48.  
-  * [[http://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/PulsarPMODs.html|EVAL-AD7420-PMDZ PMOD board]]   +
-  * [[http://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/EVAL-ADICUP360.html|EVAL-ADICUP360 Development Kit]] (If you order this from the website it also includes the USB to micro USB Cable) +
-  * A PC or Laptop with a USB port +
-  * USB Cable to micro USB Cable +
-  * A serial terminal program such as Putty or Tera Term+
  
-===== Connectors and Jumper configuration =====+{{ :resources:eval:user-guides:eval-adicup360:hardware:adt7420:adt7420_i2c_layout.png?300 |}} 
 +\\ \\  
 +If you decide to change the I2C address, then you will need to switch the position of the JP1 and JP2 solder links using the following table. 
 +\\  
 +^ JP1 Solder link Position ^ JP2 Solder link Position ^ A1 Logic Level ^ A0 Logic Level ^ I2C Device Address(Hex) ^ 
 +| Pins 2 & 3 Shorted | Pins 2 & 3 Shorted | Low  | Low   | 0x48 | 
 +| Pins 2 & 3 Shorted | Pins 1 & 2 Shorted | Low  | High  | 0x49 | 
 +| Pins 1 & 2 Shorted | Pins 2 & 3 Shorted | High | Low   | 0x4A | 
 +| Pins 1 & 2 Shorted | Pins 1 & 2 Shorted | High | High  | 0x4B |
  
-The EVAL-ADT7420-PMDZ has four locations on the board where users can  to increase flexibility when stacking systems together.  Each jumper and it's purpose is described below.+==== ADT7420 Over/Under & Critical Temperature Alerts ====
  
-{{:resources:eval:user-guides:eval-adicup360:hardware:eval-adxl362-ardz_silkscreen_w-jumper.png?500|}}+The ADT7420 has the capability of monitoring temperature and alerting users of Over/Under temperature conditions, as well as Critical temperature events.  Access to these pins and functions are provided via the INT and CT connections on the board.
  
-\\ +{{ :resources:eval:user-guides:eval-adicup360:hardware:adt7420:adt7420_int_ct_layout.png?300 |}} 
-==== ADXL_CS_SEL ==== +\\ \\  
-^ Configuration ^ Function ^ +The temperatures are software configurable, and all you need to do is monitor the INT (for Over/Under temp conditions) or CT (for Critical temp events) with respect to GND.
-| {{:resources:eval:user-guides:eval-adicup360:hardware:horizontal_jumper_12.png?125| }}| \\ Routes  ADXL362 CS pin to P0.3/IRQ0/CS1 | +
-| {{:resources:eval:user-guides:eval-adicup360:hardware:horizontal_jumper_23.png?125| }}| \\ Routes  ADXL362 CS pin to P0.4/RTS/IRQ1 |+
  
-\\ +===== Software Examples =====
-==== LCD_CS_SEL ==== +
-^ Configuration ^ Function ^ +
-| {{:resources:eval:user-guides:eval-adicup360:hardware:horizontal_jumper_12.png?125| }}| \\ Connects LCD CS pin to P2.2/BM | +
-| {{:resources:eval:user-guides:eval-adicup360:hardware:horizontal_jumper_23.png?125| }}| \\ Connects LCD CS pin to P1.4/PWM2/MISO0. |+
  
-\\ +  * [[resources:eval:user-guides:eval-adicup360:reference_designs:demo_adt7420|ADICUP360 + ADT7420 Demo]] 
-==== ADXL_INT_SEL ==== +  * [[resources:eval:user-guides:eval-adicup3029:reference_designs:demo_adt7420|ADICUP3029 + ADT7420 Bluetooth Demo]]
-^ Configuration ^ Function ^ +
-| {{:resources:eval:user-guides:eval-adicup360:hardware:vertical_jumper_12.png?65| }}| \\ Connects ADXL362 Interrupt  pin 1 (INT1) to P1.0/IRQ3 | +
-| {{:resources:eval:user-guides:eval-adicup360:hardware:vertical_jumper_23.png?65| }}| \\ Connects ADXL362 Interrupt pin 2 (INT2) to P1.0/IRQ3. |+
  
-\\ 
-==== LDC_RST_SEL ==== 
-^ Configuration ^ Function ^ 
-| {{:resources:eval:user-guides:eval-adicup360:hardware:horizontal_jumper_12.png?125| }}| \\ Connects LCD Reset to IOREF | 
-| {{:resources:eval:user-guides:eval-adicup360:hardware:horizontal_jumper_23.png?125| }}| \\ Connects LCD Reset to pin P1.1/IRQ4 |  
- 
-\\ 
 ===== Schematics, PCB Layout, Bill of Materials ===== ===== Schematics, PCB Layout, Bill of Materials =====
 <WRAP round 80% download> <WRAP round 80% download>
- +[[adi>media/en/evaluation-documentation/evaluation-design-files/eval-adt7420-pmdz-designsupport.zip | EVAL-ADT7420-PMDZ Design & Integration Files]] 
-{{:resources:eval:user-guides:eval-adicup360:hardware:eval-adxl362-ardz_design_files.zip|EVAL-ADXL362-ARDZ Design & Integration Files}} +  * Schematic 
-  * Schematics  +  * PCB Layout 
-  * PCB Layout and Mounting Diagram  +  * Bill of Materials
-  * Bill of Materials +
   * Allegro Project   * Allegro Project
- 
 </WRAP> </WRAP>
  
 +=====Registration===== 
 +<WRAP round tip 80% >
 +Receive software update notifications, documentation updates, view the latest videos, and more when you register your hardware.  [[reg>EVAL-ADT7420-PMDZ?&v=Rev A|Register]] to receive all these great benefits and more!</WRAP>
  
-===== Software examples ===== +// End of Document //
-  * [[resources:eval:user-guides:eval-adicup360:reference_designs:demo_adxl362|ADXL362 Demo]] +
- +
- +
-==== Evaluation ==== +
-  +
-<WRAP round 80% download> +
-[[ftp://ftp.analog.com/pub/cftl/EVAL-ADXXXX-PMDZ/1.0.0/|PulSAR ADC PMOD Evaluation Software]] +
-</WRAP> +
- +
- +
-===== Schematics, PCB Layout, Bill of Materials ===== +
-<WRAP round 80% download> +
- +
-  * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod-_schematic.pdf|Schematics}} (PDF) +
-  * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod.xlsx|Bill of Materials}} (Excel) +
-  * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod_-_layout.pdf|Layout}} (PDF)  +
-  * {{:resources:eval:user-guides:circuits-from-the-lab:pulsar_pmod:pulsar_pmod_-_assembly.pdf|Assembly Drawing}} (PDF) +
- +
-</WRAP>+
resources/eval/user-guides/eval-adicup360/hardware/adt7420.1482267893.txt.gz · Last modified: 20 Dec 2016 22:04 by Brandon Bushey

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