Hi,
I'm developing an electronic board that embeds an STM32F437
MCU and is programmed via JTAG by J_LINK programmer. The board is
supplied by 2.5V come from a linear regulator of which the input is
sourced by a Li-Polymer batterie.
So, in the STM32F4xx's datasheet,
the numbers of the bits of flash programming is limitted according to
the power supply voltage :
- 2.7V-3.6V => 32 bits
- 2.1V-3.6V => 16 bits
- 1.8V-3.6V => 8 bits
Then, for my application, this will be 16 bits.
In addition, I use IAR AWARM. Thus, my questions are :
- Is is possible to program the MCU's system memory with this voltage
level ? I know that the J_LINK JTAG connector have Vref pin, so, I
thought that the instruction code data will automatically transfer by
the J_LINK to the MCU flash memory with the suitable bit number but I
was probably wrong.
- So, which configuration can I do in IAR in order that the MCU will be correctly programmed ?
Thus, I need these information before I make the PCB board to not be wrong about my system power supply level.
Thanks in advance.
Best Regards,
bayarn
I'm developing an electronic board that embeds an STM32F437
MCU and is programmed via JTAG by J_LINK programmer. The board is
supplied by 2.5V come from a linear regulator of which the input is
sourced by a Li-Polymer batterie.
So, in the STM32F4xx's datasheet,
the numbers of the bits of flash programming is limitted according to
the power supply voltage :
- 2.7V-3.6V => 32 bits
- 2.1V-3.6V => 16 bits
- 1.8V-3.6V => 8 bits
Then, for my application, this will be 16 bits.
In addition, I use IAR AWARM. Thus, my questions are :
- Is is possible to program the MCU's system memory with this voltage
level ? I know that the J_LINK JTAG connector have Vref pin, so, I
thought that the instruction code data will automatically transfer by
the J_LINK to the MCU flash memory with the suitable bit number but I
was probably wrong.
- So, which configuration can I do in IAR in order that the MCU will be correctly programmed ?
Thus, I need these information before I make the PCB board to not be wrong about my system power supply level.
Thanks in advance.
Best Regards,
bayarn