Motore di ricerca datesheet componenti elettronici |
|
TMP100NA3K Scheda tecnica(PDF) 6 Page - Texas Instruments |
|
TMP100NA3K Scheda tecnica(HTML) 6 Page - Texas Instruments |
6 / 19 page TMP100 TMP101 SBOS231G − JANUARY 2002 − REVISED NOVEMBER 2007 www.ti.com 6 equal to zero. Data format for temperature is summarized in Table 5. Following power-up or reset, the Temperature Register will read 0 °C until the first conversion is complete. Table 3. Byte 1 of Temperature Register D7 D6 D5 D4 D3 D2 D1 D0 T11 T10 T9 T8 T7 T6 T5 T4 Table 4. Byte 2 of Temperature Register D7 D6 D5 D4 D3 D2 D1 D0 T3 T2 T1 T0 0 0 0 0 Table 5. Temperature Data Format TEMPERATURE ( °C) DIGITAL OUTPUT (BINARY) HEX 128 0111 1111 1111 7FF 127.9375 0111 1111 1111 7FF 100 0110 0100 0000 640 80 0101 0000 0000 500 75 0100 1011 0000 4B0 50 0011 0010 0000 320 25 0001 1001 0000 190 0.25 0000 0000 0100 004 0.0 0000 0000 0000 000 −0.25 1111 1111 1100 FFC −25 1110 0111 0000 E70 −55 1100 1001 0000 C90 −128 1000 0000 0000 800 The user can obtain 9, 10, 11, or 12 bits of resolution by addressing the Configuration Register and setting the resolution bits accordingly. For 9-, 10-, or 11-bit resolution, the most significant bits in the Temperature Register are used with the unused LSBs set to zero. CONFIGURATION REGISTER The Configuration Register is an 8-bit read/write register used to store bits that control the operational modes of the temperature sensor. Read/write operations are performed MSB first. The format of the Configuration Register for the TMP100 and TMP101 is shown in Table 6, followed by a breakdown of the register bits. The power-up/reset value of the Configuration Register is all bits equal to 0. The OS/ALERT bit will read as 1 after power-up/reset. Table 6. Configuration Register Format BYTE D7 D6 D5 D4 D3 D2 D1 D0 1 OS/ALERT R1 R0 F1 F0 POL TM SD SHUTDOWN MODE (SD) The Shutdown Mode of the TMP100 and TMP101 allows the user to save maximum power by shutting down all device circuitry other than the serial interface, which reduces current consumption to less than 1 µA. For the TMP100 and TMP101, Shutdown Mode is enabled when the SD bit is 1. The device will shutdown once the current conversion is completed. For SD equal to 0, the device will maintain continuous conversion. THERMOSTAT MODE (TM) The Thermostat Mode bit of the TMP101 indicates to the device whether to operate in Comparator Mode (TM = 0) or Interrupt Mode (TM = 1). For more information on comparator and interrupt modes, see the HIGH and LOW Limit Registers section. POLARITY (POL) The Polarity Bit of the TMP101 allows the user to adjust the polarity of the ALERT pin output. If POL = 0, the ALERT pin will be active LOW, as shown in Figure 4. For POL = 1 the ALERT pin will be active HIGH, and the state of the ALERT pin is inverted. Measured Temperature T HIGH TLOW TMP101 ALERT PIN (Comparator Mode) POL = 0 TMP101 ALERT PIN (Interrupt Mode) POL = 0 TMP101 ALERT PIN (Comparator Mode) POL = 1 TMP101 ALERT PIN (Interrupt Mode) POL = 1 Read Read Time Read Figure 4. Output Transfer Function Diagrams FAULT QUEUE (F1/F0) A fault condition occurs when the measured temperature exceeds the user-defined limits set in the THIGH and TLOW Registers. Additionally, the number of fault conditions required to generate an alert may be programmed using the Fault Queue. The Fault Queue is provided to prevent a false alert due to environmental noise. The Fault Queue requires consecutive fault measurements in order to trigger the alert function. If the temperature falls below TLOW, prior to reaching the number of programmed consecutive faults limit, the count is reset to 0. Table 7 defines the number of measured faults that may be programmed to trigger an alert condition in the device. |
Codice articolo simile - TMP100NA3K |
|
Descrizione simile - TMP100NA3K |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore 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 |