FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times I've recently been researching the power supply timing and mode switching for the FS2630.
After switching the board to OTP emulation mode, downloading the mirror register, and switching SW7 to OFF, the initialization process began. Everything proceeded normally until normal mode was reached. Then, wakeup1 was configured as the wake-up source, and a standby command was sent. The FS2630 entered standby mode, and everything was normal at this point (no INT was triggered). However, after switching SW2, the NXP GUI INT reported VPRE_UVH and other INTs, and the FS2630's FS_STATUS also became 0-Undefined. Why didn't it return to normal mode?
Afterwards, I turned off the 12V power supply to the FS2630 EVB board and prepared to try again. I found that the NXP GUI could not read the register values. I finally discovered that MOSI and SCK were shorted to ground. This happened twice, and I have no clue what to do. I hope you can give me some ideas?
Recently, I have been studying the FS2630 power-up sequence and mode switching. The board is switched to OTP Emulation Mode. After downloading the mirror registers and setting SW7 to OFF, I start the initialization process and everything works normally until the device reaches Normal Mode.
Next, I configure WAKEUP1 as the wake-up source and send the Standby command. The FS2630 enters Standby Mode, and at this point everything is still normal (INT is not triggered).
However, when I toggle SW2, the NXP GUI reports a VPRE_UVH interrupt along with other interrupts. At the same time, the FS_STATUS of the FS2630 changes to 0 - Undefined. Why doesn't the device return to Normal Mode?
In addition, I later turned off the 12 V power supply to the FS2630 EVB and attempted to repeat the process. I found that the NXP GUI could no longer read the register values. After some investigation, I discovered that MOSI and SCK were shorted to ground.
This issue has occurred twice, and I have no clear idea what is causing it. I would appreciate any suggestions or insights on where to start troubleshooting. Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times I read the register M_WIO_FLG, M_REG_FLG, and M_VSUP_FLG after toggling SW2, M_REG_FLG: 0X00a0 M_VSUP_FLG: 0X0000 M_WIO_FLG: 0X0f00 Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times I have another quesition, LDT function 5, In Low Power mode, the count can not stop by the other wake-up event occurs? the count can only stop by overflows or LDT_EN=0 ? the FS2630 has been waked up by other wake-up event before the count is running overflow, then the count is running overflow, what will the FS2630 happen ? Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times OK, I buy the MFS2630AMDA0AD , is shipping , I will read the register after receive the chip another question 1 : FS2630 VDDIO and VBAT can power on simultaneously? I have 4 questions about FS2630: FS2630上电过程中如果MCU与SBC连接的RESET_B pin 被MCU 拉低，SBC的上电时序会受到什么影响？ FS2630正常工作过程中如果MCU与SBC连接的RESET_B pin 被MCU 拉低，SBC的行为会是什么？ FS2630通过接收MCU的SPI 进入low power 模式，接收命令后的行为是什么？是否有延时设置？ FS2630进入standby / LPOO后，通过唤醒源唤醒后，唤醒后的上电时序如何？ Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times Hello!
Based on your description, it appears that the WAKE1 event is being detected and the FS2630 is attempting to exit Standby mode. However, the reported VPRE_UVH interrupt suggests that a voltage-related fault may be occurring during the Standby-to-Normal transition, preventing the device from completing the wake-up sequence successfully. As a result, the device may not be able to return to Normal mode and the FS_STATUS may appear as undefined. To help narrow down the root cause, could you please provide the following information?
The values of M_WIO_FLG, M_REG_FLG, and M_VSUP_FLG after toggling SW2.
Regarding the second issue, the behavior where MOSI and SCK appear shorted to ground is not expected under normal operation. Since this has occurred twice, we recommend checking if the EVB hardware for any damage or unintended shorts. Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times Hello,
Yes, VBAT and VDDIO can be powered at the same time.
1. During the FS2630 power-up sequence, if the MCU pulls RESET_B low, what is the impact? The FS26 power-up sequence continues normally. However, because RSTB is bidirectional, the MCU can keep the reset line low even after the FS26 is ready to release it, keeping the MCU in reset. If RSTB remains low for more than 8 s, the device may enter Deep Fail-Safe.
2. During normal operation, if the MCU pulls RESET_B low, what happens? The reset line is asserted low, the MCU remains in reset, and the FS26 may assert the safety outputs according to its safety configuration.
3. What happens after the SPI command to enter Low Power mode? Is there a configurable delay? No configurable delay is described.
4. What is the power-up sequence after wake-up from Standby/LPOFF? Wake-up source detected → regulator startup sequence → LBIST (if enabled) → ABIST → RSTB release → INIT_FS state → watchdog refresh → release of safety outputs → Normal mode. Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times Hello,
Please capture VSUP, BATSENSE, VPRE, VDDIO, WAKE1, RSTB, and SPI signals before entering Standby, during Standby, and immediately after toggling SW2 with an oscilloscope. Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times Can an LDT Function 5 count be stopped by another wake-up event? No
Can the count only stop by overflow or LDT_EN = 0? Yes. The LDT expires at timeout, or software can stop it by clearing LDT_EN = 0.
If another wake-up source wakes the FS2630 before the LDT expires, and later the LDT reaches overflow, what happens? We do not have information about this specific case. Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times Hello,
No, The mirror register contents are not retained after a restart or a wake-up sequence.
Re: FS2630 Evaluation Board , the MOSI and SCK pin of FS2630 is short , three times VPRE signal voltage is 6V on normal mode VPRE signal voltage is 5.35V on standby mode VPRE signal voltage : The voltage toggles/switches between 0V and 6V at a frequency of 450 kHz. By many try, as I use FS2613AMDA0AD chip, use the OTP emulation to download the mirror register, the chip from standby mode to normal mode by the wakeup1 source, the mirror register is lost , which lead to the VPRE voltage switches between 0V and 6V at a frequency of 450 kHz, Besides burning OTP, are there any other ways to solve this problem?
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