STM32L151XE datasheet(123/136 Pages) STMICROELECTRONICS

Part #	STM32L151XE

Description	Ultra-low-power 32-bit MCU Arm®-based Cortex®-M3 with 512KB Flash, 80KB SRAM, 16KB EEPROM, LCD, USB, ADC, DAC

PDF	136 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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123 / 136 page

DS10002 Rev 10

123/136

STM32L151xE STM32L152xE

Package information

135

WLCSP104 device marking

The following figure gives an example of topside marking orientation versus ball A1 identifier

location.

The printed markings may differ depending on the supply chain.

Other optional marking or inset/upset marks, which identify the parts throughout supply

chain operations, are not indicated below.

Figure 39. WLCSP104 top view example

1. Parts marked as ES or E or accompanied by an engineering sample notification letter are not yet qualified

and therefore not approved for use in production. ST is not responsible for any consequences resulting

from such use. In no event will ST be liable for the customer using any of these engineering samples in

production. ST’s Quality department must be contacted prior to any decision to use these engineering

samples to run a qualification activity.

Table 68. WLCSP104 recommended PCB design rules

Dimension

Recommended values

Pitch

0.4

Dpad

260 µm max. (circular)

220 µm recommended

Dsm

300 µm min. (for 260 µm diameter pad)

PCB pad design

Non-solder mask defined via underbump allowed.

MS37511V1

Ball A1

identifier

32L151VEY6

Date code

Revision code

Product identification(1)

YWW

STM32L151XE Datasheet(PDF) 123 Page - STMicroelectronics