Part Number:ADS1120
ADS1120 电源上电300ms后才进行寄存器配置,请问一下复位命令0X06还是否必须要下发?
Alice:
您好,
ADS1120上电复位“8.4.1 Power-Up and Reset”,无需额外RESET命令,建议监测DRDY状态改变后(from high to low),再进行芯片配置。
ADS1120 4-Channel, 2-kSPS, Low-Power, 16-Bit ADC with Integrated PGA and Reference datasheet (Rev. C) (ti.com)
,
li chunfeng:
就是说规格书里面推荐的配置流程中,复位命令环节是非必要的?
Set CS to the device low;Delay for a minimum of td(CSSC);
Send the RESET command (06h) to make sure the device is properly reset after power-up;Delay for a minimum of 50 µs + 32 · t(CLK);
Write the respective register configuration with the WREG command (43h, 08h, 04h, 10h, and 00h);
As an optional sanity check, read back all configuration registers with the RREG command (23h);
Send the START/SYNC command (08h) to start converting in continuous conversion mode;
Delay for a minimum of td(SCCS);Clear CS to high (resets the serial interface);
,
Alice:
您好,
“ Send the RESET command (06h) to make sure the device is properly reset after power-up;”
是的, 如果担心芯片没有正常复位,可增加复位命令。
,
li chunfeng:
您好,那请问一下这个芯片存在芯片没有正常复位的可能吗?上电时序正确和没有EMI等干扰的情况下