JAJSNM5A December   2021  – August 2022 TMP9R00-SP

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Two-Wire Timing Requirements
      1. 6.6.1 Timing Diagrams
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Temperature Measurement Data
      2. 7.3.2 Series Resistance Cancellation
      3. 7.3.3 Differential Input Capacitance
      4. 7.3.4 Sensor Fault
      5. 7.3.5 THERM Functions
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode (SD)
    5. 7.5 Programming
      1. 7.5.1 Serial Interface
        1. 7.5.1.1 Bus Overview
        2. 7.5.1.2 Bus Definitions
        3. 7.5.1.3 Serial Bus Address
        4. 7.5.1.4 Read and Write Operations
          1. 7.5.1.4.1 Single Register Reads
          2. 7.5.1.4.2 Block Register Reads
        5. 7.5.1.5 Timeout Function
        6. 7.5.1.6 High-Speed Mode
      2. 7.5.2 TMP9R00-SP Register Reset
      3. 7.5.3 Lock Register
    6. 7.6 Register Maps
      1. 7.6.1 Register Information
        1. 7.6.1.1  Pointer Register
        2. 7.6.1.2  Local and Remote Temperature Value Registers
        3. 7.6.1.3  Software Reset Register
        4. 7.6.1.4  THERM Status Register
        5. 7.6.1.5  THERM2 Status Register
        6. 7.6.1.6  Remote Channel Open Status Register
        7. 7.6.1.7  Configuration Register
        8. 7.6.1.8  η-Factor Correction Register
        9. 7.6.1.9  Remote Temperature Offset Register
        10. 7.6.1.10 THERM Hysteresis Register
        11. 7.6.1.11 Local and Remote THERM and THERM2 Limit Registers
        12. 7.6.1.12 Block Read - Auto Increment Pointer
        13. 7.6.1.13 Lock Register
        14. 7.6.1.14 Manufacturer and Device Identification Plus Revision Registers
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 サポート・リソース
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  10. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

7.6.1.7 Configuration Register

The Configuration Register sets the conversion rate, starts one-shot conversion of all enabled channels, enables conversion the temperature channels, controls the shutdown mode and reports when a conversion is in process. The Configuration Register is set by writing to pointer address 30h, and is read from pointer address 30h. Table 7-8 summarizes the bits of the Configuration Register.

Table 7-8 Configuration Register Bit Descriptions
CONFIGURATION REGISTER (READ = 30h, WRITE = 30h, POR = 0F9Ch)
BIT NUMBERNAMEFUNCTIONPOWER-ON-RESET VALUE
15:8REN8:REN11 = enable respective remote channel 8 through 1 conversions1111 1111
7LEN1 = enable local channel conversion1
6OS1 = start one-shot conversion on enabled channels0
5SD1 = enables device shutdown0
4:2CR2:CR0Conversion rate control bits; control conversion rates for all enabled channels from 16 seconds to continuous conversion111
1BUSY1 when the ADC is converting (read-only bit ignores writes)0
0Reserved—0

The Remote Enable eight through one (REN8:REN1, bits 15:8) bits enable conversions on the respective remote channels. The Local Enable (LEN, bit 7) bit enables conversions of the local temperature channel. If all LEN and REN are set to 1 (default), this enables the ADC to convert the local and all remote temperatures. If the LEN is set to 0, the local temperature conversion is skipped. Similarly if a REN is set to 0, that remote temperature conversion channel is skipped. The TMP9R00-SP device steps through each enabled channel in a round-robin fashion in the following order: LOC, REM1, REM2, REM8, LOC, REM1, and so on. All local and remote temperatures are converted by the internal ADC by default after power up. The configuration register LEN and REN bits can be configured to save power by reducing the total ADC conversion time for applications that do not require all of the eight remote and local temperature information. Note writing all zeros to REN8:REN1 and LEN has the same effect as SD = 1 and OS = 0.

The shutdown bit (SD, bit 5) enables or disables the temperature-measurement circuitry. If SD = 0 (default), the TMP9R00-SP device converts continuously at the rate set in the conversion rate register. When SD is set to 1, the TMP9R00-SP device immediately stops the conversion in progress and instantly enters shutdown mode. When SD is set to 0 again, the TMP9R00-SP device resumes continuous conversions starting with the local temperature.

The BUSY bit = 1 if the ADC is making a conversion. This bit is set to 0 if the ADC is not converting.

After the TMP9R00-SP device is in shutdown mode, writing a 1 to the one-shot (OS, bit 6) bit starts a single ADC conversion of all the enabled temperature channels. This write operation starts one conversion and comparison cycle on either the eight remote and one local sensor or any combination of sensors, depending on the LEN and REN values in the Configuration Register (read address 30h). The TMP9R00-SP device returns to shutdown mode when the cycle is complete. Table 7-9 details the interaction of the SD, OS, LEN, and REN bits.

Table 7-9 Conversion Modes
WRITEREADFUNCTION
REN[8:1], LENOSSDREN[8:1], LENOSSD
All 0——All 001Shutdown
At least 1 enabled—0Written value00Continuous conversion
At least 1 enabled01Written value01Shutdown
At least 1 enabled11Written value11One-shot conversion

The conversion rate bits control the rate that the conversions occur (CR2:CR0, bits 4:2). The value of CR2:CR0 bits controls the idle time between conversions but not the conversion time itself, which allows the TMP9R00-SP device power dissipation to be balanced with the update rate of the temperature register. Table 7-10 describes the mapping for CR2:CR0 to the conversion rate or temperature register update rate.

Table 7-10 Conversion Rate
CR2:CR0DECIMAL VALUEFREQUENCY (Hz)TIME (s)
00000.062516
00110.1258
01020.254
01130.52
100411
101520.5
110640.25
1117Continuous conversion; depends on number of enabled channels; see Table 7-11 (default).
Table 7-11 Continuous Conversion Times
NUMBER OF REMOTE CHANNELS ENABLEDCONVERSION TIME (ms)
LOCAL DISABLEDLOCAL ENABLED
0015.5
115.831.3
231.647.1
347.462.9
463.278.7
57994.5
694.8110.3
7110.6126.1
8126.4141.9

The remaining bits of the configuration register are reserved and must always be set to 0. The POR value for this register is 0x0F9C.