Installation Instructions

SIM5216A _HD_V1.02 Hardware Design
SIM5216A _HD_V1.02 26.08.2010
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Typical charge curves for each cell type are shown in following figures. Note that the
rechargeable Lithium type coin cells are generally pre-charged from the vendor.
Figure 11: Seiko MS518 Charge and discharge Characteristic
Note:
Gold-capacitance backup
Some suitable coin cells are the electric double layer capacitors. They have a small physical
size (6.8 mm diameter) and a nominal capacity of 0.2 F to 0.3 F, giving hours of backup time.
3.7 Serial interface
SIM5216A provides an unbalanced asynchronous serial port. The module is designed as a DCE
(Data Communication Equipment), following the traditional DCE-DTE (Data Terminal
Equipment) connection, the module and the client (DTE) are connected through the following
signal (as following figure shows).