Data Sheet

Smart Machine Smart Decision
SIM800F_Hardware Design_V1.00 46 2015-07-31
4.18 KPLED
SIM800F provides one open-drain LED driver pin.
Table 36: Pin definition of the KPLED
Reference circuit is recommended in the following figure:
Figure 41: KPLED driver reference circuit
Table 37: KPLED specification
4.19 Bluetooth
SIM800F supports Bluetooth function which can be operated by AT commands conveniently. For detail
commands about Bluetooth please refer to document
[1]
The features of Bluetooth are listed as below:
 Fully compliant with Bluetooth specification3.0
 Support operation with GPS and GSM/GPRS worldwide radio systems
 Fully integrated PA provides 10dbm output power
 Up to 4 simultaneous active ACL links
 Support sniff mode
 Supports PCM interface and built-in programmable transcoders for liner voice with transmission
4.20 Antenna Interface
There are two antenna interfaces, GSM_ANT and BT_ANT.
 The input impendence of the antenna should be 50, and the VSWR should be less than 2
 It is recommended that the GSM antenna and the BT antenna should be placed as far as possible
 The isolations of the two antenna should be bigger than 30dB
Note: About the RF trace layout please refer to“AN_SMT Module_RF_Reference Design_Guide”
Pin name Pin number Description
KPLED 23 Sink current for keypad LED
Pin name Min Typ Max Unit
KPLED - - 60 mA