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MAX5815 Datasheet(PDF) 16 Page - Maxim Integrated Products |
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MAX5815 Datasheet(HTML) 16 Page - Maxim Integrated Products |
16 / 30 page Ultra-Small, Quad-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and I2C Interface MAX5813/MAX5814/MAX5815 Maxim Integrated Products 16 to the MAX5813/MAX5814/MAX5815. The master termi- nates transmission and frees the bus, by issuing a STOP condition. The bus remains active if a Repeated START condition is generated instead of a STOP condition. I2C Early STOP and Repeated START Conditions The MAX5813/MAX5814/MAX5815 recognize a STOP condition at any point during data transmission except if the STOP condition occurs in the same high pulse as a START condition. Transmissions ending in an early STOP condition will not impact the internal device set- tings. If the STOP occurs during a readback byte, the transmission is terminated and a later read mode request will begin transfer of the requested register data from the beginning (this applies to combined format I2C read mode transfers only, interface verification mode transfers will be corrupted). See Figure 2. I2C Slave Address The slave address is defined as the seven most sig- nificant bits (MSBs) followed by the R/W bit. See Figure 4. For the TSSOP packages, the three most signifi- cant bits are 001 with the 4 LSBs determined by ADDR1 and ADDR0 as shown in Table 1. For the WLP package, the five most significant bits are 00011 with the 2 LSBs determined by ADDR0 as shown in Table 2. Setting the R/W bit to 1 configures the MAX5813/MAX5814/ MAX5815 for read mode. Setting the R/W bit to 0 config- ures the MAX5813/MAX5814/MAX5815 for write mode. The slave address is the first byte of information sent to the MAX5813/MAX5814/MAX5815 after the START condition. The MAX5813/MAX5814/MAX5815 have the ability to detect an unconnected state on the ADDR input for additional address flexibility; if leaving the ADDR input unconnected, be certain to minimize all loading on the pin (i.e. provide a landing for the pin, but do not allow any board traces). I2C Broadcast Address A broadcast address is provided for the purpose of updating or configuring all MAX5813/MAX5814/MAX5815 devices on a given I2C bus. All MAX5813/MAX5814/ MAX5815 devices acknowledge and respond to the broadcast device address 00010000. The devices will respond to the broadcast address, regardless of the state of the address pins. The broadcast mode is intend- ed for use in write mode only (as indicated by R/W = 0 in the address given). Figure 3. I2C Acknowledge Table 1. I2C Slave Address LSBs for TSSOP Package Table 2. I2C Slave Address LSBs for WLP Package TSSOP PACKAGE (A[6:4] = 001) ADDR1 ADDR0 A3 A2 A1 A0 VDDIO VDDIO 0 0 0 0 VDDIO N.C. 0 0 1 0 VDDIO GND 0 0 1 1 N.C. VDDIO 1 0 0 0 N.C. N.C. 1 0 1 0 N.C. GND 1 0 1 1 GND VDDIO 1 1 0 0 GND N.C. 1 1 1 0 GND GND 1 1 1 1 WLP PACKAGE (A[6:2] = 00011) ADDR0 A1 A0 VDDIO 0 0 N.C. 1 0 GND 1 1 1 SCL START CONDITION SDA 29 CLOCK PULSE FOR ACKNOWLEDGMENT ACKNOWLEDGE NOT ACKNOWLEDGE |
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