Datenblatt-Suchmaschine für elektronische Bauteile |
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MAX16805 Datenblatt(PDF) 13 Page - Maxim Integrated Products |
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MAX16805 Datenblatt(HTML) 13 Page - Maxim Integrated Products |
13 / 19 page EEPROM-Programmable, High-Voltage, 350mA LED Drivers with LED Current Foldback ______________________________________________________________________________________ 13 Message Format Write to the MAX16805/MAX16806 by transmitting the device’s slave address with R/W, 8th bit set to zero fol- lowed by at least 1 byte of information (Figure 7). The first byte of information is the command byte. The bytes received after the command byte are the data bytes. The first data byte goes into the internal register as selected by the command byte (Figure 8). If there is more than one data byte, the MAX16805/MAX16806 auto-increment to the next register address locations to write the subsequent data bytes. The MAX16805/ MAX16806 auto-increment up to the register address 0x05, EEPROM Content Transfer register. A read operation is performed as follows: After the START condition (S), a 7-bit slave ID is sent followed by an 8th bit (R/W) set to zero. A register address is then sent to specify the address location from which the read has to take place. To complete a read operation, the master needs to generate a repeat- ed START (Sr) followed by the 7-bit slave ID but with the 8th bit (R/W) set to "1" this time indicating a read operation. On the other hand, a read operation can be performed by sending in the 7-bit slave ID followed by an 8th bit (R/W) set to "1" if the current address location happens to be the address location from which data needs to be read. ACKNOWLEDGE FROM MAX16805/MAX16806 ACKNOWLEDGE FROM MAX16805/MAX16806 0 S A AP RW SLAVE ADDRESS COMMAND BYTE Figure 7. Command Byte Received ACKNOWLEDGE FROM MAX16805/MAX16806 ACKNOWLEDGE FROM MAX16805/MAX16806 ACKNOWLEDGE FROM MAX16805/MAX16806 RW COMMAND BYTE 1 BYTE DATA BYTE SLAVE ADDRESS A A 0 S A P Figure 8. Command and a Single Data Byte Received REGISTER NAME REGISTER ADDRESS NO. OF BITS/ REGISTER Binning Adjustment 0x00 4 Ramp Peak 0x01 3 LED Current Foldback Threshold (LED_CFT) 0x02 4 Thermal Foldback Knee Point 0x03 4 Thermal Foldback Slope Gain 0x04 2 Thermal Foldback Clamp Level 0x05 3 EEPROM Content Transfer 0x06 — EEPROM Program Enable 0x08 — Password Register 0xFF — Table 2. Registers Address |
Ähnliche Teilenummer - MAX16805 |
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Ähnliche Beschreibung - MAX16805 |
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