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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP55231 датащи(PDF) 19 Page - Texas Instruments |
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LP55231 датащи(HTML) 19 Page - Texas Instruments |
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19 / 59 page  ack from slave start MSB Chip Addr LSB SCL ack from slave w MSB Register Addr LSB rs r MSB Data LSB stop ack from slave nack from master repeated start data from slave SDA start id =32h w ack address = 3Fh ack rs r ack address 3Fh data nack stop MSB Chip Address LSB id = 32h start MSB Chip Addr LSB w ack MSB Register Addr LSB ack MSB Data LSB ack stop ack from slave ack from slave ack from slave SCL SDA start id = 32h w ack addr = 40h ack ack address 40h data stop ADR6 bit7 ADR5 bit6 ADR4 bit5 ADR3 bit4 ADR2 bit3 ADR1 bit2 ADR0 bit1 R/W bit0 MSB LSB 0 0 0 1 1 0 1 I 2 C Slave Address (chip address) 19 LP55231 www.ti.com SNOSCR5D – MARCH 2013 – REVISED DECEMBER 2016 Product Folder Links: LP55231 Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated Programming (continued) 7.5.2 I2C-Compatible Chip Address ASEL0 and ASEL1 pins configure the chip address for the LP55231 as shown in Table 1. Table 1. LP55231 Chip Address Configuration ASEL1 ASEL0 ADDRESS 8-BIT HEX ADDRESS (HEX) WRITE/READ GND GND 32 64/65 GND VEN 33 66/67 VEN GND 34 68/69 VEN VEN 35 6A/6B Figure 21. LP55231 Chip Address Id = Chip Address = 32h For Lp55231. This data pattern writes temperature information to the temperature write register (40h). Figure 22. Write Cycle (W = Write; SDA = 0), Id = Chip Address = 32h For LP55231. This data pattern reads temperature information from the temperature read register (3fh). when a read function is to be accomplished, a write function must precede the read function, as shown above. Figure 23. Read Cycle (R = Read; SDA = 1) 7.5.2.1 Control Register Write Cycle • Master device generates start condition. • Master device sends slave address (7 bits) and the data direction bit (r/w = 0). |
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