STM32L151VD datasheet(34/154 Pages) STMICROELECTRONICS

Teilenummer	STM32L151VD

Bauteilbeschribung	Ultra-low-power 32-bit MCU ARM® Cortex®-M3, 384KB Flash, 48KB SRAM, 12KB EEPROM, LCD, USB, ADC, DAC, memory I/F

PDF	154 Pages

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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34 / 154 page

Functional overview

STM32L151xD STM32L152xD

34/154

DocID022027 Rev 11

3.20

Development support

3.20.1

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.

The JTAG JTMS and JTCK pins are shared with SWDAT and SWCLK, respectively, and a

specific sequence on the JTMS pin is used to switch between JTAG-DP and SW-DP.

The JTAG port can be permanently disabled with a JTAG fuse.

3.20.2

Embedded Trace Macrocell™

The ARM® Embedded Trace Macrocell 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

STM32L151xD and STM32L152xD device through a small number of ETM pins to an

external hardware trace port analyzer (TPA) device. The TPA is connected to a host

computer using USB, Ethernet, or any other high-speed channel. Real-time instruction and

data flow activity can be recorded and then formatted for display on the host computer

running debugger software. TPA hardware is commercially available from common

development tool vendors. It operates with third party debugger software tools.

STM32L151VD Datenblatt(PDF) 34 Page - STMicroelectronics