Wiring Diagram

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2、Enter sleep mode and wake up
When the SPI CS pulls high, and the MCU writes register 0x01 [15], the chip enters the sleep
mode, and the current <1uA, the value of the register in the sleep mode can be maintained. When
SPI CS is low, the chip automatically wakes up into IDLE state. The MCU will pull the SPI CS for a
period (wait for crystal stability, about 1.5ms), and then write the SPI data.
Power-on initialization
Waiting for power-on
reset(T1)
Wait for the crystal to
stabilize(T2)
Initialization register
Picture 13-2