SLUSDT5B September 2019 – October 2023 BQ75614-Q1
PRODUCTION DATA
Section 8.5.1 shows all parameters that can be programmed to the customer OTP page. There are two pages of OTP memory available for customer to use.
Before programming the OTP, host ensures:
Step | Procedure |
---|---|
1 | Unlock the OTP programming: a. Write the following data to OTP_PROG_UNLOCK1A to OTP_PROG_UNLOCK1D registers.
b. Do another write with the following data to OTP_PROG_UNLOCK2A to OTP_PROG_UNLOCK2D registers.
|
2 | Check to confirm the OTP unlock procedure is successful: a. Read to confirm OTP_PROG_STAT[UNLOCK] = 1 Issuing a Read command after step 1 is ok, but issuing the [PROG_GO] must be the next write command after the unlock procedures. |
3 | Select the proper OTP page and start the OTP programming: a. To program page1, set OTP_PROG_CTRL[PAGESEL][PROG_GO] = 0x01, or b. To program page2, set OTP_PROG_CTRL[PAGESEL][PROG_GO] = 0x03 |
4 | Wait tPROG= 100ms for the OTP programming to complete. During this time no data communication is allowed. |
5 | Check to ensure there is no error during OTP programming. The
following bits are expected to be 1 after a successful OTP
programming: a. OTP_PROG_STAT[DONE] = 1, OTP programming is done. No other bit will be set in this register. b. If page 1 is programmed, OTP_CUST1_STAT[PROGOK], [TRY], [OVOK], and [UVOK] bits are 1. Other bits are 0. c. If page 2 is programmed, OTP_CUST2_STAT[LOADED], [PROGOK], [TRY], [OVOK], and [UVOK] bits are 1. Other bits are 0. |
6 | Issue a digital reset to reload the registers with the updated
OTP values: a. CONTROL1[SOFT_RESET] = 1 |
During programming, if a programming voltage OV or UV event occurs, the OTP_CUST*_STAT[UVOK] or OTP_CUST_STAT2[OVOK] bit is 0 to indicate the programming voltage under- or overvoltage condition is detected during the programing attempts. In addition, the [UVERR], [OVERR], [SUVERR], and [SOVERR] bits in the OTP_PROG_STAT register indicate if there is programming voltage error during programming and stability test.
Device will not start OTP programming above 55°C temperature.
OTP programming time (from [PROG_GO] = 1 to [DONE] =1) for LDOIN capacitor of 0.1μF is 100ms.