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ZHCSTD4B September 2019 – October 2023 BQ75614-Q1

PRODUCTION DATA

封裝選項

機械數據 (封裝 | 引腳)

PAP|64
- MPQF071C

散熱焊盤機械數據 (封裝 | 引腳)

PAP|64
- PPTD012N

訂購信息

8.3.6.3.2 OTP Programming

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:

All OTP shadow registers have the correct settings
A customer OTP page is valid to be programmed. A valid page is one with OTP_CUST*_STAT1[TRY] = 0 and OTP_CUST*_STAT1[FMTERR] = 0.

Table 8-20 Program the OTP

Step	Procedure
1	Unlock the OTP programming: a. Write the following data to OTP_PROG_UNLOCK1A to OTP_PROG_UNLOCK1D registers. OTP_PROG_UNLOCK1A <- data 0x02 OTP_PROG_UNLOCK1B <- data 0xB7 OTP_PROG_UNLOCK1C <- data 0x78 OTP_PROG_UNLOCK1D <- data 0xBC b. Do another write with the following data to OTP_PROG_UNLOCK2A to OTP_PROG_UNLOCK2D registers. OTP_PROG_UNLOCK2A <- data 0x7E OTP_PROG_UNLOCK2B <- data 0x12 OTP_PROG_UNLOCK2C <- data 0x08 OTP_PROG_UNLOCK2D <- data 0x6F Each block of registers must be written in order (that is, A, B, C, then D) with no other writes or reads between. The best practice is to use the same Write command to update. Any attempt to update the registers out of sequence, or if another register is written or read between writes, the entire sequence must be redone.
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 t_PROG= 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.

Note:

During the programming procedure, device performs a programming voltage stability test before actually programming the OTP. If a programming voltage fails the stability test, the device will not set the OTP_CUST*_STAT[TRY] bit, giving the customer another attempt to program the page again.
If the host incorrectly selects a page for programming, the OTP_PROG_STAT[PROGERR] bit is set. This indicates that the selected page was not available to be programmed. Select the correct page and retry the programming.
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.