STM32L151VB(2013) 데이터 시트보기 (PDF) - STMicroelectronics

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STM32L151VB
(Rev.:2013)

Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC

STMicroelectronics 

STM32L151x6/8/B, STM32L152x6/8/B

Package characteristics

Figure 41. Recommended PCB design rules for pads (0.5 mm pitch BGA)

Dpad

Dsm

Pitch

0.5 mm

D pad

0.27 mm

Dsm

0.35 mm typ (depends on

the soldermask registration

tolerance)

Solder paste 0.27 mm aperture diameter

1. Non solder mask defined (NSMD) pads are recommended

2. 4 to 6 mils solder paste screen printing process

ai15495

Doc ID 17659 Rev 8

113/121

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