Microcontrollers include Bluetooth

National Semiconductor has introduced four connectivity processors aimed at applications using wide-area, local-area or personal-area networks.

Part of the firm’s CP3000 family of processors, the devices integrate Bluetooth, controller area network (CAN) and universal serial bus (USB) interfaces. The processors can be used in automotive, consumer, medical and industrial applications such as remote sensors or personal health data loggers.

The CP3BT23, CP3BT26, CP3UB26 and CP3CN23 processors include a fully embedded Bluetooth interface with baseband processing, a host protocol stack and dedicated profiles. Additional features include a high-resolution, 12-bit analogue to digital converter, additional serial interfaces and increased memory.

Each processor features 256kbyte of on-chip flash, 32kbyte of on-chip SRAM, an additional 8kbyte of on-chip data flash and the ability to address up to 12Mbyte of external memory. Functions and interfaces include multifunction timers; audio interfaces; USART, UART, Microwire and SPI interfaces; ACCESS.bus, which is I2C compatible; programmable I/O ports; an on-chip clock; a phase-locked loop; and a watchdog timer.

The processors run from 0 to 24MHz and are available in an extended temperature range of -40°C to +85°C.

Both the CP3BT23 and CP3BT26 include the Bluetooth baseband and allow the implementation of a fully embedded Bluetooth stack with a customer’s application code. Each interfaces with National’s LMX5252 Bluetooth radio transceiver. The CP3BT23 integrates Access.bus, SPI, dual CAN and four UART interfaces, while the CP3BT26 integrates USB, Access.bus, SPI, CAN and four UART interfaces.

The CP3UB26 provides USB, CAN, four UART, Access.bus (I2C compatible) and SPI interfaces, while the CP3CN23 offers dual CAN, four UART, Access.bus and SPI interfaces.

For 10,000-unit quantities in a 128-pin package, the CP3BT23 is $9.25, the CP3BT26 is $9.15, the CP3UB26 is $9.05 and the CP3CN23 is $8.95. In 10,000-unit quantities in a 144-pin LQFP package, the CP3BT23 is $9.44, the CP3BT26 is $9.34, the CP3UB26 is $9.04 and the CP3CN23 is $9.14.

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