Pinout
Specifications| Input Min Voltage | 2.5 Volt |
| Input Max Voltage | 3.6 Volt |
| Data Links (max) | 7 |
| Audio Links (max) | 1 |
| Bluetooth Spec | 2.0 |
| Bluetooth Profiles | GAP; SDAP; SPP |
| FCC/CE Certified | Yes |
| Bluetooth Qualified | Yes |
| Command Interface | Simply Blue |
| Transparent UART Support | Yes |
| GPIOs | 2 |
| Host Interface Type | UART |
| Audio Interface | PCM |
| Wakeup | Yes |
| On-Chip Oscillator | Yes |
| On-Chip Antenna | Yes |
| Slow Clock Support | Yes |
| Temperature Min | -40 deg C |
| Temperature Max | 85 deg C |
| View Using Catalog |
DescriptionThe National Semiconductor LMX9838 Bluetooth Serial Port module is a fully integrated Bluetooth 2.0 baseband controller, 2.4 GHz radio, crystal, antenna, LDO and discreets; combined to form a complete small form factor (10 mm x 17 mm x 2.0 mm) Bluetooth node.
All hardware and firmware is included to provide a complete solution from antenna through the complete lower and upper layers of the Bluetooth stack, up to the application including the Generic Access Profile (GAP), the Service Discovery Application Profile (SDAP), and the Serial Port Profile (SPP). The module includes a configurable service database to fulfil service requests for additional profiles on the host. Moreover, the LMX9838 is qualified as a Bluetooth endproduct, ready to be used in the end application without additional testing and license cost.
Based on National's CompactRISC 16-bit processor architecture and Digital Smart Radio technology, the LMX9838 is optimized to handle the data and link management processing requirements of a Bluetooth node.
The firmware supplied in the on-chip ROM memory offers a complete Bluetooth (v2.0) stack including profiles and command interface. This firmware features point-to-point and point-to-multipoint link management supporting data rates up to the theoretical maximum over RFComm of 704 kbps. The internal memory supports up to 7 active Bluetooth data links and one active SCO link.
The on-chip Patch RAM provided for lowest cost and risk, allows the flexibility of firmware upgrade.
The module is lead free and RoHS (Restriction of Hazardous Substances) compliant. For more information on those quality standards, please visit our green compliance website at http://www.national.com/quality/green/
Design Tools
| Title |
Size in Kbytes |
Date |
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| LMX9838 Bluetooth Serial Port Module - Additional Developer' Documentation |
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View |
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| LMX9838 Bluetooth Serial Port Module Evaluation Kit |
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View |
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If you have trouble printing or viewing PDF file(s), see Printing Problems.
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Application Notes
| Title |
Size in Kbytes |
Date |
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| AN-1706: Application Note 1706 LMX9838 Firmware Release Note |
557 Kbytes |
13-Sep-07 |
Download |
| AN-1699: Application Note 1699 LMX9838 Software Users Guide |
4816 Kbytes |
17-Mar-08 |
Download |
| AN-1709: Application Note 1709 LMX9838 Bluetooth? (PRD 2.0) Qualification Guideline |
934 Kbytes |
25-Sep-07 |
Download |
| AN-1700: Application Note 1700 LMX9838 Cable Replacement |
185 Kbytes |
7-Sep-07 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
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More Application Notes
| Title |
Size in Kbytes |
Date |
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| AN-1811: Application Note 1811 Bluetooth Antenna Design |
2736 Kbytes |
12-Mar-08 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
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LMX9838 Data Sheet
