SIM3L144-C-GM Silicon Labs, SIM3L144-C-GM Datasheet - Page 88

• Manufacturer Part Number: SIM3L144-C-GM
• Description: ARM Microcontrollers - MCU 64KB, DC-DC, AES QFN40
• Manufacturer: Silicon Labs

Specifications of SIM3L144-C-GM

• Rohs: yes
• Core: ARM Cortex M3
• Processor Series: SiM3L1xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 16 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.8 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-40
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 20
• Interface Type: I2C, SPI
• Length: 4.65 mm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 28
• Number Of Timers: 3
• On-chip Dac: Yes
• Program Memory Type: Flash
• Supply Voltage - Max: 3.8 V
• Supply Voltage - Min: 1.8 V

SiM3L1xx
6.7.1. TQFP-64 Solder Mask Design
All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad
is to be 60 µm minimum, all the way around the pad.
6.7.2. TQFP-64 Stencil Design
6.7.3. TQFP-64 Card Assembly
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1. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure
2. The stencil thickness should be 0.125 mm (5 mils).
3. The ratio of stencil aperture to land pad size should be 1:1 for all pads.
1. A No-Clean, Type-3 solder paste is recommended.
2. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body
good solder paste release.
Components.
Rev 0.5