SBOS564B November   2011  – December 2018 TMP104

PRODUCTION DATA.  

  1. 1Features
  2. 2Applications
  3. 3Description
    1.     Device Images
      1.      Typical Application
  4. 4Revision History
  5. 5Pin Configuration and Functions
    1.     Pin Functions
  6. 6Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Thermal Information
    4. 6.4 Electrical Characteristics
    5. 6.5 Typical Characteristics
  7. 7Detailed Description
    1. 7.1 Overview
    2. 7.2 Feature Description
      1. 7.2.1 Timeout Function
      2. 7.2.2 Noise
      3. 7.2.3 SMAART Wire™ Interface Timing Specifications
    3. 7.3 Programming
      1. 7.3.1 Communication Protocol
      2. 7.3.2 Command Register
      3. 7.3.3 Global Initialization and Address Assignment Sequence
      4. 7.3.4 Global Read and Write
      5. 7.3.5 Global Clear Interrupt
      6. 7.3.6 Global Software Reset
      7. 7.3.7 Individual Read and Write
    4. 7.4 Register Maps
      1. 7.4.1 Temperature Register
      2. 7.4.2 Configuration Register
        1. 7.4.2.1 Temperature Watchdog Function (FH, FL)
        2. 7.4.2.2 Conversion Rate (CR1, CR0)
        3. 7.4.2.3 Conversion Modes
          1. 7.4.2.3.1 Shutdown Mode (M1 = 0, M0 = 0)
          2. 7.4.2.3.2 One-Shot Mode (M1 = 0, M0 = 1)
          3. 7.4.2.3.3 Continuous Conversion Mode (M1 = 1)
        4. 7.4.2.4 Interrupt Functionality (INT_EN)
      3. 7.4.3 Temperature Limit Registers
  8. 8Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Community Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  9. 9Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • YFF|4
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4.2.2 Conversion Rate (CR1, CR0)

The conversion rate bits (CR1 and CR0), located in the Configuration Register, configure the TMP104 for conversion rates of 8 Hz, 4 Hz, 1 Hz, or 0.25 Hz (default). The TMP104 has a typical conversion time of 26 ms. To achieve different conversion rates, the TMP104 performs a single conversion and then powers down and waits for the appropriate delay set by CR1 and CR0. Table 8 shows the settings for CR1 and CR0.

Table 8. Conversion Rate Settings

CR1 CR0 CONVERSION RATE
0 0 0.25 Hz (default)
0 1 1 Hz
1 0 4 Hz
1 1 8 Hz

After power-up or general-call reset, the TMP104 immediately starts a conversion, as shown in Figure 14. The first result is available after 26 ms (typical). The active quiescent current during conversion is 40 μA (typical at +25°C, V+ = 1.8 V). The quiescent current during delay is 1.0 μA (typical at +25°C, V+ = 1.8 V).

TMP104 ai_conv_start_bos564.gif
1.

NOINDENT:

Delay is set by CR1 and CR0.
Figure 14. Conversion Start