CP3BT10G38

Application Specific Microcontrollers Overview

The CP3BT10G38 is a reprogrammable connectivity processor designed for embedded Bluetooth applications, manufactured by National Semiconductor. It integrates a CR16C RISC CPU core operating up to 24 MHz with zero wait states. The device features 256 Kbytes of Flash program memory, 8 Kbytes of Flash data memory, and 10 Kbytes of static RAM. Key peripherals include a Bluetooth Lower Link Controller compliant with Specification Version 1.1, a full-speed USB node conforming to USB 1.1, an Advanced Audio Interface (AAI), CVSD/PCM conversion, UART, Microwire/SPI, ACCESS.bus, and a DMA controller. It supports I/O voltages of 2.5V to 3.3V and operates within a temperature range of -40°C to +85°C in an LQFP-100 package.

Application Specific Microcontrollers Feature Summary

• Integrated Bluetooth Lower Link Controller supporting all Bluetooth 1.1 packet types and fast frequency hopping at 1600 hops/s.
• Full-speed USB node with seven endpoint FIFOs compatible with USB 1.0 and 1.1 specifications.
• On-chip memory includes 256K bytes Flash program memory, 8K bytes Flash data memory, and 10K bytes SRAM.
• Advanced Audio Interface (AAI) and CVSD/PCM converter for bidirectional audio connections.

Application Specific Microcontrollers Applications

• Embedded handheld and portable Bluetooth devices
• Bluetooth headsets and audio accessories
• USB-enabled Bluetooth connectivity solutions

Application Specific Microcontrollers Procurement Notes

Verify the component status as obsolete before procurement planning. Confirm that the LQFP-100 package matches the design footprint. Ensure compatibility with the required development tools, such as the IAR Embedded Workbench or iSYSTEM winIDEA, for software integration. Check for availability of reference designs and protocol stack documentation from National Semiconductor archives.

Application Specific Microcontrollers Selection Notes

Select the CP3BT10G38 when a complete Bluetooth system solution with integrated USB is required without external microcontrollers. The G38 suffix indicates the 24 MHz speed grade and industrial temperature range (-40°C to +85°C). Choose this over the CSP-48 variant if surface mount area is less constrained than height, as it offers more general-purpose I/O pins (37 vs 21). Ensure the application can utilize the on-chip Flash for in-system programming.

Application Specific Microcontrollers Part Context

The CP3BT10 is part of National Semiconductor's connectivity processor family, designed to reduce system cost and size by integrating the Bluetooth baseband and USB controller into a single chip. It is typically paired with the LMX5252 Bluetooth radio transceiver to form a complete solution. The device was supported by a comprehensive development environment including protocol stacks and reference designs to accelerate time-to-market for Bluetooth products.

Application Specific Microcontrollers Replacement Considerations

The CP3BT10 series is marked as obsolete. No direct pin-compatible replacements are listed in the provided datasheet. Designers should evaluate modern Texas Instruments Bluetooth MCU families, such as the CC26xx or CC13xx series, which offer integrated Bluetooth and USB capabilities with updated power efficiency and software support.