STM32F205VGT6 datasheet(17/163 Pages) STMICROELECTRONICS

Part #	STM32F205VGT6

Description	ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/1284KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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STM32F205xx, STM32F207xx

Description

Doc ID 15818 Rev 7

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2.2.5

CRC (cyclic redundancy check) calculation unit

The CRC (cyclic redundancy check) calculation unit is used to get a CRC code from a 32-bit

data word and a fixed generator polynomial.

Among other applications, CRC-based techniques are used to verify data transmission or

storage integrity. In the scope of the EN/IEC 60335-1 standard, they offer a means of

verifying the Flash memory integrity. The CRC calculation unit helps compute a software

signature during runtime, to be compared with a reference signature generated at link-time

and stored at a given memory location.

2.2.6

True random number generator (RNG)

All STM32F2xxx products embed a true RNG that delivers 32-bit random numbers

produced by an integrated analog circuit.

2.2.7

Embedded SRAM

All STM32F20x products embed up to 128 Kbytes of system SRAM accessed (read/write) at

CPU clock speed with 0 wait states, plus 4 Kbytes of backup SRAM.

2.2.8

Multi-AHB bus matrix

The 32-bit multi-AHB bus matrix interconnects all the masters (CPU, DMAs, Ethernet, USB

HS) and the slaves (Flash memory, RAM, FSMC, AHB and APB peripherals) and ensures a

seamless and efficient operation even when several high-speed peripherals work

simultaneously.

Figure 5.

Multi-AHB matrix

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