EVDO PC Embedded Datasheet

Product Datasheet
V001R006
Issue 2 (2009-01-20)
Confidencein Commercial
Page 26 of 60
Table 3-6 RUIM pins
Pin Name Description Direction to
Module
8 UIM_PWR Power source for the external
UIM/UIM.
Output
10 UIM_DATA External UIM/UIM data signal. Input/Output
12 UIM_CLK External UIM/UIM clock signal. Output
14 UIM_RESET External UIM/UIM reset signal. Output
16 UIM_Vpp Programming power connection used
to program EEPROM of first
generation ICCs, but not used now.
Not connected
Notes:
It is recommended that the UIM card is inserted only after the power of the module is
disconnected, otherwise the UIM card can be destroyed.
RUIM interface schematic reference:
There is no UIM card interface circuit in the EM660 module, and users need to add
the RUIM interface circuit. The definition of interface signals and the typical RUIM
interface schematic are as follows.
Figure 3-1 RUIM interface schematic on user’s PC