STM32L051C6 datasheet(113/133 Pages) STMICROELECTRONICS

Part #	STM32L051C6

Description	Access line ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, up to 64 KB Flash, 8 KB SRAM, 2 KB EEPROM, ADC

PDF	133 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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113 / 133 page

DS10184 Rev 10

113/133

STM32L051x6 STM32L051x8

Package information

125

Figure 49. Standard WLCSP36 - 2.61 x 2.88 mm, 0.4 mm pitch wafer level chip scale

recommended footprint

F-

0.305(3)

0.012

G-

0.440(3)

0.017

aaa

0.100

0.004

bbb

0.100

0.004

ccc

0.100

0.004

ddd

0.050

0.002

eee

0.050

0.002

1. Values in inches are converted from mm and rounded to the 3rd decimal place.

2. Nominal dimension rounded to the 3rd decimal place results from process capability.

3. Calculated dimensions are rounded to the 3rd decimal place.

Table 77. Standard WLCSP36 recommended PCB design rules

Dimension

Recommended values

Pitch

0.4 mm

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

Table 76. Standard WLCSP36 - 2.61 x 2.88 mm, 0.4 mm pitch wafer level chip scale

mechanical data (continued)

Symbol

millimeters

inches(1)

Min

Typ

Max

Min

Typ

Max

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