Dear Dialog,
I am testing the ble_app_barebone example and modify it to advertise the measured value of the build-in temperature sensor. Now I can advertise the temperature as I expect, but I measured the startup power consumption is relatively large, which is mainly caused by the long startup time lasting around hundreds of ms. Is there any method I can adopt to reduce the startup time?
According to the table below, does it that mean if I burn the FW into OTP, I only need 35.5uC (7.5+17.1+10.9) to complete the startup.
But 35.5uC does not satisfy my need as well. How could I reduce the charge further? I want to realize the startup process within 12uC under the supply voltage of 3.3V.
Hi Nick,
Thank you for posting your questions online.
You can get the boot sequence from this UM:AN-B-072: DA1453x Booting from OTP and Serial Interfaces (renesas.com)
the boot procedure is fixed in the ROM, we can not modify it. But if you have a big amount of usage the SW team may spend resources for customizing ROM burn. If needed, please send me a private message and share the project details with us.
BR,
JH_Renesas
Dear JH,
Sorry for the late reply. It seems DA14531 cannot satisfy my requirement. I found a BLE IC called IN100, and it claims that it can achieve fast startup and broadcasting as shown in the figure below. Does Dialog have a comparable BLE IC?
Nick
Hi Nick
We have now device DA14592 you can take a look.
DA14592 - SmartBond Multi-Core Bluetooth® LE 5.2 SoC with Embedded Flash | Renesas
Thanks JH for you fast reply. Is there any document showing the power consumption of DA14592, especially the startup power consumption? I just saw the TX and RX current of DA14592.
you can take this as a reference.
Select your concerned scenarial.
Jason
Thanks JH. So, can I think the tSTA_BOOT for DA14531 is 8.31ms, which is slower that 5ms of DA14592? And how about the time spent on "SW initialization, BLE initialization, application start" for DA14592? Will that be almost the same compared to DA14531's?
yes, about SW/BLE initialization DA14592 with Cortex M33 cpu 64MHz Max, DA14531 with Cortex M0+ 16MHz Max.
But DA14592 run with FreeRTOS, so, it's hard to compare without test. But currently we do not have the related testing data available.
8.31ms is boot from OTP, with flash will take more time.