FXPS7115D4S datasheet(36/72 Pages) NXP

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NXP Semiconductors

FXPS7115D4S

Digital absolute pressure sensor, 40 kPa to 115 kPa

Bit

Name

UOTP_WR_INIT

Reserved

EX_COMMTYPE

EX_PADDR

UOTP_REGION[1:0]

Access

R/W

Reset

Table 49. WRITE_OTP_EN – write OTP enable register – (address 11h) bit allocation

contents for the OTP array, not the actual OTP registers. To copy the values to the actual OTP registers, a

write must be executed to the WRITE_OTP_EN register with the UOTP_WR_INIT bit set. The state of the

UOTP_REGION[1:0], the EX_COMMTYPE, and the EX_PADDR bits in the command determine which region of

OTP is written to as shown in Table 50.

EX_COMMTYPE EX_PADDR

UOTP_REGION[1] UOTP_REGION[0] OTP write operation

Special conditions

Write the current contents of the UF0 registers to OTP

—

Write the current contents of the UF1 registers to OTP

—

Reserved for future use.

—

Reserved for future use.

—

Reserved for future use.

—

Write the current contents of the UF2 registers to OTP.

Excluding LPF. LPF defaults to 1000

Hz at POR.

Reserved for future use

—

Table 50. Writes for OTP registers

The UF0 and UF1 user OTP regions as well as the NXP programmed F OTP regions share common mirror

registers. For this reason, writes to the OTP for each region must be completed independently according to the

procedure below.

Once a region is written using the OTP Write sequence, the LOCK_Uxxx bit in the appropriate CRC_xxx

activated to detect changes to the register values. Register values in the UF2 region can be overwritten using

The procedure for writing to the user OTP array UF0 and UF1 regions is listed below:

1. Read the appropriate CRC_UFx register and confirm the LOCK_Uxx bit is not set.

2. Write the desired values to the user array registers for only the region to be written using the procedures in

Section 7.7.6 "UF_REGION_W, UF_REGION_R - UF region selection registers (address 14h, 15h)" .

The user must take care to ensure that the proper data is written to each region. If a register write is

executed to a new region, the base address changes to the new region. The previous data written to the

3. Execute a write to the WRITE_OTP_EN register with the appropriate bits set for the desired region to

program.

Once the WRITE_OTP_EN register write is completed, a CRC is calculated for the data to be written

to the region, the register values are written to OTP and the region is locked from future writes. The

UOTP_WR_INIT bit remains set.

4. Delay 10 ms to allow the device to complete the writes to OTP.

5. Verify that the OTP write has successfully completed by reading back all of the OTP registers using register

read commands as defined in Section 7.7.6 "UF_REGION_W, UF_REGION_R - UF region selection

registers (address 14h, 15h)".

6. Repeat steps 1 through 4 for all regions to be programmed.

The procedure for writing to the user OTP array UF2 region is listed below:

1. Read the CRC_UF2 register and confirm the LOCK_UF2 bit is not set.

2. Write the desired values to the user array registers.

FXPS7115D4S

All information provided in this document is subject to legal disclaimers.

Objective data sheet

Rev. 1.2 — 28 June 2023

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