User's Manual
Table Of Contents
- Scope
- MSD50NBT Features Summary
- Specifications
- WLAN Functional Description
- Bluetooth Functional Description
- Electrical Characteristics
- Bluetooth Radio Characteristics
- SDIO Timing Requirements
- Pin Definitions
- Mechanical Specifications
- Mounting
- Reference Schematic of MSD50NBT
- RF Layout Design Guidelines/Precautions
- Regulatory
- FCC and Industry Canada Regulatory
- European Union Regulatory
- EU Declarations of Conformity
- Ordering Information
MSD50NBT
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
14
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Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
Feature
Description
Radio
The BT radio shares the single antenna port with the WLAN through an internal 3-way
RF switch. The MSD50NBT implements WLAN/BT coexistence internally.
VDDIO is to set the I/O voltage internally with either 1.8 V or 3.3 V to ensure same
voltage level for the internal Wi-Fi and BT coexistence signal. Refer to the reference
design specifications for details.
BT_WAKEUP_HOST
Pin-12 on MSD50NBT is reserved for BT to wake host from deep sleep mode. Current
s/w may not support it. Contact Laird for more information.
VDDIO
Pin-21 on MSD50NBT is WLAN Host IO (SDIO) power supply input. Can be either 1.8V
or 3.3V.
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
Table 4 summarizes the absolute maximum ratings and Table 5 lists the recommended operating conditions for
the MSD50NBT. Absolute maximum ratings are those values beyond which damage to the device can occur.
Functional operation under these conditions, or at any other condition beyond those indicated in the
operational sections of this document, is not recommended.
Note: Maximum rating for signals follows the supply domain of the signals.
Table 4: Absolute Maximum Ratings
Symbol (Domain)
Parameter
Max Rating
Unit
VDDIO
WLAN host SDIO interface and BT I/O supply
-0.3 to 4.0
V
VCC3_3
External 3.3V power supply
-0.3 to 3.6
V
Storage
Storage Temperature
-40 to +85
°C
ANT1; ANT2
Maximum RF input (reference to 50-Ω input)
+10
dBm
ESD
Electrostatic discharge tolerance
2000
V
Recommended Operating Conditions
Table 5: Recommended Operating Conditions
Symbol (Domain)
Parameter
Min
Typ
Max
Unit
VDDIO
WLAN host interface and BT I/O
supply
1.71/3.2
1.8/3.3
1.89/3.46
V
VCC3_3
External 3.3V power supply
3.2
3.30
3.46
V
T-ambient
Ambient temperature
-30
25
85
°C
DC Electrical Characteristics
Table 6 and Table 7 list the general DC electrical characteristics over recommended operating conditions (unless
otherwise specified).