STM32U575/STM32U585 Programming time different

Yongquan · ‎2026-02-03

Hi Everybody,

Now i met an issue for STM32U575/STM32U585 Programming time different, below is my test log, i don't why get the different time, since i do the erase in any time. The blank chip programming time is 34s, and NOT BLANK chip programming time is 13s.

NOT Blank

STM32_Programmer_CLI.exe -c port=SWD sn=55FF69064978865014230767 freq=8000 -e all -w "D:\Download_Tool\FW\EVT_SMT_2.0.1.6\RLT_ReleaseStandaloneNoAlgo_2.0.1.6.bin" 0x08000000 -v

-------------------------------------------------------------------

STM32CubeProgrammer v2.14.0

-------------------------------------------------------------------

ST-LINK SN : 55FF69064978865014230767

ST-LINK FW : V2J45S7

Board : --

Voltage : 1.86V

SWD freq : 4000 KHz

Connect mode: Normal

Reset mode : Software reset

Device ID : 0x482

Revision ID : Rev W

Device name : STM32U575/STM32U585

Flash size : 2 MBytes

Device type : MCU

Device CPU : Cortex-M33

BL Version : 0x93

Debug in Low Power mode enabled

Mass erase ...

Mass erase successfully achieved

-------------------------------------------------------------------

Choose flashing speed for Cortex M33 series.(default speed=Reliable)

-------------------------------------------------------------------

Memory Programming ...

Opening and parsing file: RLT_ReleaseStandaloneNoAlgo_2.0.1.6.bin

File : RLT_ReleaseStandaloneNoAlgo_2.0.1.6.bin

Size : 1.04 MB

Address : 0x08000000

Erasing memory corresponding to segment 0:

Erasing internal memory sectors [0 133]

Download in Progress:

0%

71% 100%

File download complete

Time elapsed during download operation: 00:00:13.422

Verifying ...

Read progress:

50%

100%

Download verified successfully

Blank Chip:

STM32_Programmer_CLI.exe -c port=SWD sn=49FF6E067189495142410987 freq=8000 -e all -w "D:\Download_Tool\FW\EVT_SMT_2.0.1.6\RLT_ReleaseStandaloneNoAlgo_2.0.1.6.bin" 0x08000000 -v

-------------------------------------------------------------------

STM32CubeProgrammer v2.14.0

-------------------------------------------------------------------

ST-LINK SN : 49FF6E067189495142410987

ST-LINK FW : V2J42S7

Board : --

Voltage : 1.75V

SWD freq : 4000 KHz

Connect mode: Normal

Reset mode : Software reset

Device ID : 0x482

Revision ID : Rev W

Device name : STM32U575/STM32U585

Flash size : 2 MBytes

Device type : MCU

Device CPU : Cortex-M33

BL Version : 0x93

Debug in Low Power mode enabled

Mass erase ...

Mass erase successfully achieved

-------------------------------------------------------------------

Choose flashing speed for Cortex M33 series.(default speed=Reliable)

-------------------------------------------------------------------

Memory Programming ...

Opening and parsing file: RLT_ReleaseStandaloneNoAlgo_2.0.1.6.bin

File : RLT_ReleaseStandaloneNoAlgo_2.0.1.6.bin

Size : 1.04 MB

Address : 0x08000000

Erasing memory corresponding to segment 0:

Erasing internal memory sectors [0 133]

Download in Progress:

0%

71% 100%

File download complete

Time elapsed during download operation: 00:00:34.281

Verifying ...

Read progress:

50%

100%

Download verified successfully

C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeProgrammer\bin\STM32_Programmer_CLI.exe

TDK · ‎2026-02-03

They are at different voltages, and quite low. It may be expected that higher voltage will complete flash operations more quickly, although I can't find anything relevant on that for this specific chip. I don't think erased/not erased is relevant here as they both perform a full erase operation first.

> STM32CubeProgrammer v2.14.0

This version is quite old. You may want to try a newer version to see if performance is improved.

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