EFM32WG840F128 Energy Micro, EFM32WG840F128 Datasheet - Page 56

• Manufacturer Part Number: EFM32WG840F128
• Description: ARM Microcontrollers - MCU 128kb flash 32kb RAM
• Manufacturer: Energy Micro

Specifications of EFM32WG840F128

• Rohs: yes
• Core: ARM Cortex M4F
• Processor Series: EFM32WG840
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 48 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.85 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-64
• Mounting Style: SMD/SMT

5 PCB Layout and Soldering
5.1 Recommended PCB Layout
2012-09-11 - EFM32WG840FXX - d0195_Rev1.00
Figure 5.1. QFN64 PCB Land Pattern
Table 5.1. QFN64 PCB Land Pattern Dimensions (Dimensions in mm)
Symbol
a
b
d
e
g
c
f
Dim. (mm)
b
c
0.85
0.30
0.50
8.90
8.90
7.20
7.20
Preliminary
a
p1
p2
p8
p3
Symbol
P1
P2
P3
P4
P5
P6
P7
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56
d
p9
f
Pin number
16
17
32
33
48
49
1
p7
p4
p6
p5
g
Symbol
P8
P9
-
-
-
-
-
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e
Pin number
64
65
-
-
-
-
-