STM32F401CDU6 datasheet(116/135 Pages) STMICROELECTRONICS

Part #	STM32F401CDU6

Description	ARM Cortex-M4 32b MCUFPU, 105 DMIPS, 256KB Flash/64KB RAM, 11 TIMs, 1 ADC, 11 comm. interfaces

PDF	135 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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116 / 135 page

DocID024738 Rev 6

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STM32F401xB STM32F401xC

Package information

130

WLCSP49 device marking

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

location.

Other optional marking or inset/upset marks, which depend on supply chain operations, are

not indicated below.

Figure 48. WLCSP49 marking example (package top view)

1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet

qualified and therefore not yet ready to be used in production and any consequences deriving from such

usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering

samples in production. ST Quality has to be contacted prior to any decision to use these Engineering

samples to run qualification activity.

Table 80. WLCSP49 recommended PCB design rules (0.4 mm pitch)

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

STM32F401CDU6 Datasheet(PDF) 116 Page - STMicroelectronics