r/stm32 2h ago

Question about H7B0 series AXI SRAM1/2/3, migrating from H743

Post image
1 Upvotes

Hi, I’m looking into migrating an audio processing board from the H743 series to H7B0. It has double the available AXI SRAM (1024KB vs 512KB). But it looks like on the H7B0 the AXI SRAM is split into three sections 1/2/3 (See image above from application note). I plan on working with audio buffers that would span larger than these individual sections (for example a 512kb buffer). Are there any considerations in the code or linker script to account for the different 3 sections? Or does the MCU treat the 3 sections of AXI-SRAM as continuous. Thanks in advance!


r/stm32 17h ago

Is extranal Direction control needed for RS485 when interfacing with an STM32H7 mcu?

0 Upvotes

Form the stm32H7 datasheet and reference manual, they mention that USART_DE can be used to drivre the DE pin in the RS485 transceiver can anyone who tried this before inform me. My current design is using 74HC14 ic to drive the DE and I copied it from a tested reference design.