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32G431 bảng dữ liệu(PDF) 19 Page - STMicroelectronics

tên linh kiện 32G431
Giải thích chi tiết về linh kiện  Arm® Cortex®-M4 32-bit MCUFPU, 170 MHz /213 DMIPS,up to 128 KB Flash, 32 KB SRAM, rich analog, math accelerator
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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32G431 bảng dữ liệu(HTML) 19 Page - STMicroelectronics

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STM32G431x6 STM32G431x8 STM32G431xB
Functional overview
43
3.6
Multi-AHB bus matrix
The 32-bit multi-AHB bus matrix interconnects all the masters (CPU, DMAs) and the slaves
(Flash memory, RAM,AHB and APB peripherals). It also ensures a seamless and efficient
operation even when several high-speed peripherals work simultaneously.
Figure 2. Multi-AHB bus matrix
3.7
Boot modes
At startup, a BOOT0 pin (or nBOOT0 option bit)and an nBOOT1 option bit are used to select
one of three boot options:
•
Boot from user Flash
•
Boot from system memory
•
Boot from embedded SRAM
The BOOT0 value may come from the PB8-BOOT0 pin or from an nBOOT0 option bit
depending on the value of a user nBOOT_SEL option bit to free the GPIO pad if needed.
The boot loader is located in the system memory. It is used to reprogram the Flash memory
by using USART, I2C, SPI, and USB through the DFU (device firmware upgrade).
MS47544V1
Cortex®-M4
with FPU
DMA1
DMA2
CCM
SRAM
AHB1
peripherals
AHB2
peripherals
SRAM1
FLASH
128 KB
ICode
DCode
BusMatrix-S
SRAM2



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