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LSM6DSOP 数据表(PDF) 42 Page - STMicroelectronics |
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LSM6DSOP 数据表(HTML) 42 Page - STMicroelectronics |
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42 / 107 page  The procedure to correctly initialize the device is as follows: 1. INT: Leave unconnected or connect with external pull-down during power-on. Pull-up must be avoided on this pin. 2. Properly configure the device: a) SPI case: I2C_disable = 1 in CTRL4_C (13h) and DEVICE_CONF = 1 in CTRL9_XL (18h). b) I²C case: I2C_disable = 0 (default) in CTRL4_C (13h) and DEVICE_CONF = 1 in CTRL9_XL (18h). Table 17. Internal pin status pin# Name Pin function Pin status 1 SDO SPI 4-wire interface serial data output (SDO) Default: input without pull-up. Pull-up is enabled if bit SDO_PU_EN = 1 in reg 02h. SA0 I²C least significant bit of the device address (SA0) 2 RES Connect to VDDIO or GND Default: input without pull-up. Pull-up is enabled if bit PU_EN = 1 in reg 14h in pull-up configuration registers (see Note to enable pull-up). 3 RES Connect to VDDIO or GND Default: input without pull-up. Pull-up is enabled if bit PU_EN = 1 in reg 14h in pull-up configuration registers (see Note to enable pull-up). 4 INT Programmable interrupt Default: input with pull-down(1) 1. INT must be set to '0' or left unconnected during power-on. 5 VDDIO Power supply for I/O pins 6 GND 0 V supply 7 GND 0 V supply 8 VDD Power supply 9 NC Leave unconnected Default: output forced to ground 10 NC Leave unconnected Default: input with pull-up 11 NC Leave unconnected Default: input with pull-up 12 CS I²C/SPI mode selection (1:SPI idle mode / I²C communication enabled; 0: SPI communication mode / I²C disabled) Default: input with pull-up. Pull-up is disabled if bit I2C_disable = 1 in reg 13h and DEVICE_CONF = 1 in reg 18h. 13 SCL I²C / SPI serial port clock (SPC) Default: input without pull-up 14 SDA I²C (SDA) / SPI serial data input (SDI) / 3-wire interface serial data output (SDO) Default: input without pull-up |
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