LMX9838SB/NOPB National Semiconductor, LMX9838SB/NOPB Datasheet - Page 12

• Manufacturer Part Number: LMX9838SB/NOPB
• Description: IC MODULE BLUETOOTH PORT 70LTCC
• Manufacturer: National Semiconductor

Specifications of LMX9838SB/NOPB

• Frequency: 2.4GHz
• Data Rate - Maximum: 704kbps
• Modulation Or Protocol: Bluetooth v2.0, Class 2
• Applications: PDA's, POS Terminals
• Power - Output: 0dBm
• Sensitivity: -80dBm
• Voltage - Supply: 2.5 V ~ 3.6 V
• Current - Receiving: 65mA
• Current - Transmitting: 65mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 70-LTCC
• Physical Interfaces: UART
• Data Rate: 704Kbps
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 4 - 72 Hours
• Frequency Max: 2480MHz
• Filter Terminals: SMD
• Frequency Min: 2402MHz
• No. Of Pins: 70
• Rohs Compliant: Yes
• For Use With: LMX9838DONGLE - KIT DESIGN DONGLE FOR LMX9838
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LMX9838SB

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12.0 Power Up
The LMX9838 contains an internal EEPROM initialized during
power up or hardware reset. During this initialization phase it
is recommended not to:
•
•
•
Send a command to the LMX9838: The command will be
ignored.
Power OFF/ON the LMX9838: The EEPROM initialization
phase will be interrupted and the EEPROM will not be
recognized which leaves the device in a lockup situation.
Issue a Hardware Reset: The EEPROM initialization
phase will be interrupted and the EEPROM will not be
recognized which leaves the device in a lockup situation.
FIGURE 3. LMX9838 Power-up Sequence
12
Once the initialization phase is completed the module sends
the “SimplyBlue Ready Event” (refer to the LMX9838 Soft-
ware User's Guide, AN-1699) to declare its fully functional
state.
It is therefore recommended to wait for the “SimplyBlue
Ready Event” message before stating using the LM9838 by
sending a command or issuing a Reset or Power On cycle.
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