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VD5377 数据表(PDF) 14 Page - STMicroelectronics |
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VD5377 数据表(HTML) 14 Page - STMicroelectronics |
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14 / 88 page ![]() Application schematics VD5377 14/88 Doc ID 022952 Rev 2 Figure 4. 1.8 V direct supply Note: In a 1.8 V direct drive configuration, the POWERDOWN pin should be connected to 1.8 V to ensure the internal regulator is switched off to minimize power consumption. 3.1 Signal descriptions STANDBY VLED SCL SDA MOTION I2C_SEL0 I2C_SEL1 I2C_SEL2 LED_OUT DVSS BACKLED0 BACKLED1 BACKLED2 DVDD GPIO0 MOTION TEST_CLK SDA 2 1 3 4 5 6 7 8 9 19 20 22 23 24 SCL 10 DVSS 11 18 17 16 14 13 AVSS 25 26 AVDD DVSS 21 12 15 VD5377 NC NC 1.8V 1.8V 1.8V Optional I2C Address Navigation LED 220 nF GND Table 7. Signal descriptions Pad # Signal name Type Description 1 DVSS Supply Digital ground 2 I2C_SEL0 1.8V digital input I2C address select input. 5 V tolerant inputs with integrated pull-down resistor. If unconnected default address is 0xA6. (Pads have internal 35 kOhm pull-down resistors. If connected to VDD, the pull-down resistor is disconnected after the internal microcontroller boot sequence is completed to reduce power consumption). 3 I2C_SEL1 1.8V digital input 4 I2C_SEL2 1.8V digital input 5 LED_OUT Current DAC output Navigation LED drive pad. Constant current sink set by internal DAC. Maximum setting 14 mA. For external LED driver use GPIO0. 6 DVSS Supply Digital ground 7 DVDD Supply 1.8 V digital supply |
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