Moisture Sensitivity Level (Msl); Firmware Update; Sd Card Update - SimCom SIM5215 Hardware Design

application.
6.2

Moisture Sensitivity Level (MSL)

SIM5215&SIM5216 is qualified to Moisture Sensitivity Level (MSL) 3 in accordance with JEDEC
J-STD-020. After the prescribed time limit exceeded, users should bake modules for 192 hours in drying
equipment (<5% RH) at 40° C +5° C/-0° C, or 72 hours at 85° C +5° C/-5° C. Note that plastic tray is not
heat-resistant, users must not use the tray to bake at 85° C or the tray may be damaged.
6.3

Firmware Update

When SIM5215A&SIM5216A modules are embed into users' equipment, there are two methods to update
firmware easily, which are called SD card and USB update.
6.3.1

SD Card Update

SD card update means that user can use SD card to update the firmware into the module. The realization
process is described in following figures.
SIM5215&SIM5216_Hardware Design_V2.02
Figure 47: Reference circuit for SD card update
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2012-08-31