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D6F-PH MEMS Differential pressure Sensor User’s Manual (A288)
7-2-5. Initialize (0Bh)
Initialization process after the device is turned on. Initialization must be performed to load the
trimming data of NVM.
・
Write 00h in the initialization register (0Bh)
For details, refer to Section 7-2-7. Example of I2C Access Commands.
7-2-6. Power Sequence Register (0Dh)
Table 8. Power Sequence Register (0Dh)
Address MSB
D7 D6 D5 D4 D3 D2 D1
LSB
D0
0Dh
Hard_Rese
t
ADC_state ADC_state ADC_state Pwr_seq_s
tate5
Pwr_seq_st
ate5
Pwr_seq_st
ate5
Pwr_seq_st
ate5
Table 9. Details of Power Sequence Register
Bit Name R/W Description
[3:0] Pwr_seq_state5 R Indicates the state of the power sequence.
h0(0000b): Idle
h2(0010b): Active
h9(1001b): Execute
[6:4] ADC_state R State in which ADC is controlled
[7] Hard_Reset R/W 1-> Hardware reset is performed (Automatically
cleared after execution)
0-> Hardware reset is not performed
The state is h0 after the initialization process, or when the power supply is reset.
The state is h2 when 06h is written in D040.
The state is h9 during the operation.
When a hardware reset is performed, the hardware reset bit is automatically cleared to “0” after
the execution of reset, the internal register returns to the default value, and the internal trimming
value is reloaded from the non-volatile memory. This hardware reset function is similar to the
power reset function.
Notes
·
When using hardware reset, set bits 0 to 6 to “0”.