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TMP442 数据表(PDF) 11 Page - Texas Instruments |
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TMP442 数据表(HTML) 11 Page - Texas Instruments |
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11 / 29 page  REGISTER INFORMATION POINTER REGISTER One-ShotStartRegister ConfigurationRegisters StatusRegister IdentificationRegisters h -FactorCorrectionRegisters ConversionRateRegister LocalandRemoteTemperatureRegisters SDA SCL PointerRegister I/O Control Interface SoftwareReset b -CompensationRegister TMP441 TMP442 www.ti.com .............................................................................................................................................. SBOS425A – DECEMBER 2008 – REVISED MARCH 2009 The TMP441/42 contain multiple registers for holding configuration information, temperature measurement results, and status information. These registers are described in Figure 14 and Table 3. Figure 14 shows the internal register structure of the TMP441/42. The 8-bit Pointer Register is used to address a given data register. The Pointer Register identifies which of the data registers should respond to a read or write command on the Two-Wire bus. This register is set with every write command. A write command must be issued to set the proper value in the Pointer Register before executing a read command. Table 3 describes the pointer address of Figure 14. Internal Register Structure the TMP441/42 registers. The power-on reset (POR) value of the Pointer Register is 00h (0000 0000b). Table 3. Register Map BIT DESCRIPTION POINTER POR (HEX) (HEX) 7 6 5 4 3 2 1 0 REGISTER DESCRIPTION 00 00 LT11 LT10 LT9 LT8 LT7 LT6 LT5 LT4 Local Temperature (High Byte)(1) 01 00 RT11 RT10 RT9 RT8 RT7 RT6 RT5 RT4 Remote Temperature 1 (High Byte)(1) 02 00 RT11 RT10 RT9 RT8 RT7 RT6 RT5 RT4 Remote Temperature 2 (High Byte)(1)(2) 08 BUSY 0 0 0 0 0 0 0 Status Register 09 00 0 SD 0 0 0 RANGE 0 0 Configuration Register 1 0A 1C/3C(2) 0 0 REN2(2) REN LEN RC 0 0 Configuration Register 2 0B 07 0 0 0 0 0 R2 R1 R0 Conversion Rate Register 0C 08/88(2) BC23(2) BC22(2) BC21(2) BC20(2) BC13 BC12 BC11 BC10 Beta Compensation 0F X X X X X X X X One-Shot Start(3) 10 00 LT3 LT2 LT1 LT0 0 0 nPVLD 0 Local Temperature (Low Byte) 11 00 RT3 RT2 RT1 RT0 0 0 nPVLD OPEN Remote Temperature 1 (Low Byte) 12 00 RT3 RT2 RT1 RT0 0 0 nPVLD OPEN Remote Temperature 2 (Low Byte)(2) 21 00 NC7 NC6 NC5 NC4 NC3 NC2 NC1 NC0 η Correction 1 22 00 NC7 NC6 NC5 NC4 NC3 NC2 NC1 NC0 η Correction 2(2) FC X X X X X X X X Software Reset(4) FE 55 0 1 0 1 0 1 0 1 Manufacturer ID 41 0 1 0 0 0 0 0 1 TMP441 Device ID FF 42 0 1 0 0 0 0 1 0 TMP442 Device ID (1) Compatible with Two-Byte Read; see Figure 18. (2) TMP442 only. (3) X = undefined. Writing any value to this register initiates a one-shot start; see the One-Shot Conversion section. (4) X = undefined. Writing any value to this register initiates a software reset; see the Software Reset section. Copyright © 2008–2009, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link(s): TMP441 TMP442 |
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