STM32U545NET3QTR datasheet(87/283 Pages) STMICROELECTRONICS

87 / 283 page

DS14216 Rev 1

87/283

STM32U545xx

Functional overview

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Improved acceptance filtering

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2 receive FIFOs of three payloads each (up to 64 bytes per payload)

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Separate signaling on reception of high priority messages

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Configurable transmit FIFO / queue of three payload (up to 64 bytes per payload)

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Configurable transmit Event FIFO

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Programmable loop-back test mode

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Maskable module interrupts

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Two clock domains: APB bus interface and CAN core kernel clock

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Power-down support

3.47

USB full speed (USB)

USB main features

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USB specification version 2.0 full-speed compliant

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Host and device functions

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2048 bytes of dedicated SRAM data buffer memory with 32-bit access

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USB clock recovery

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Configurable number of endpoints from 1 to 8

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Cyclic redundancy check (CRC) generation/checking, non-return-to-zero inverted

(NRZI) encoding/decoding, and bit-stuffing

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Isochronous transfers support

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Double-buffered bulk/isochronous endpoint support

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USB suspend/resume operations

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Frame-locked clock pulse generation

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USB 2.0 Link power management support

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Battery charging specification revision 1.2 support in device

3.48

Development support

3.48.1

Serial-wire/JTAG debug port (SWJ-DP)

The Arm SWJ-DP interface is embedded and is a combined JTAG and serial-wire debug

port that enables either a serial wire debug or a JTAG probe to be connected to the target.

Debug is performed using two pins only instead of five required by the JTAG (JTAG pins can

be re-used as GPIO with alternate function): the JTAG TMS and TCK pins are shared with

SWDIO and SWCLK, respectively, and a specific sequence on the TMS pin is used to

switch between JTAG-DP and SW-DP.

3.48.2

Embedded Trace Macrocell

The Arm Embedded Trace Macrocell (ETM) provides a greater visibility of the instruction

and data flow inside the CPU core by streaming compressed data at a very high rate from

the devices through a small number of ETM pins to an external hardware trace port analyzer

(TPA) device.

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