CP3UB17K38

Application Specific Microcontrollers Overview

The CP3UB17K38Y is a reprogrammable connectivity processor from Texas Instruments (formerly National Semiconductor), operating at 24 MHz within an industrial temperature range of -40°C to +85°C. It integrates a CR16C RISC core with 256 Kbytes of Flash program memory, 8 Kbytes of Flash data memory, and 10 Kbytes of static RAM. The device features a full-speed USB node compliant with USB 1.1, supporting seven endpoint FIFOs. Additional on-chip peripherals include UART, Microwire/SPI, ACCESS.bus, Advanced Audio Interface (AAI), CVSD/PCM conversion, DMA controller, and multiple timer modules. It is housed in a CSP-48 package.

Application Specific Microcontrollers Feature Summary

• CR16C CPU Core: Fully static RISC processor capable of 0 to 24 MHz operation with zero wait states.
• On-Chip Memory: Includes 256 Kbytes Flash program memory, 8 Kbytes Flash data memory, and 10 Kbytes SRAM.
• USB Controller: Full-speed USB node compatible with USB 1.0/1.1 specifications, featuring seven endpoint pipes.
• Communication Peripherals: Integrates UART, Microwire/SPI, ACCESS.bus, Advanced Audio Interface (AAI), and CVSD/PCM converter.

Application Specific Microcontrollers Applications

• Embedded systems requiring high computing bandwidth and hardware communications I/O.
• Audio applications utilizing the Advanced Audio Interface or CVSD/PCM conversion module.
• Devices needing USB connectivity for data transfer or control.
• Industrial environments requiring operation within the -40°C to +85°C temperature range.

Application Specific Microcontrollers Procurement Notes

Verify component authenticity as the CP3UB17 series is marked obsolete by the manufacturer. Confirm package type (CSP-48) and speed grade (K38 indicates 24 MHz). Check for moisture sensitivity handling requirements during storage and assembly. Ensure development tools like IAR Embedded Workbench are compatible with legacy CR16C architecture support.

Application Specific Microcontrollers Selection Notes

Select the CP3UB17K38Y when external bus expansion is not required, as this variant lacks external address lines compared to the LQFP-100 versions. Choose this part for compact designs due to the CSP-48 package. Ensure software resources and peripheral drivers are available for the CR16C core. Verify power supply requirements of 2.5V for core logic and 2.5V to 3.3V for I/O ports.

Application Specific Microcontrollers Part Context

The CP3UB17 belongs to the National Semiconductor (now Texas Instruments) connectivity processor family. It was designed to combine a powerful RISC core with extensive communication peripherals. The K38 suffix denotes the 24 MHz speed grade and CSP-48 package. The Y suffix indicates tape and reel packaging with a quantity of 250 units per reel.

Application Specific Microcontrollers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the product is obsolete, alternative solutions may require architectural redesign or migration to newer microcontroller families with similar peripheral sets.