News and New Products

Tiny device packs in features

By Robert Cravotta -- EDN, 2/17/2005

The 3×3×0.85-mm LPC9102 and LPC9103 processors are the newest members of Philips Electronics’ LPC900 8-bit microcontroller family. These tiny 80C51-based devices target space-constrained applications and include an internal 7.3728-MHz, 1%-accurate RC oscillator, brownout-detection and power-on-reset circuits, a four-input 8-bit ADC that you can configure as a single-output DAC, an analog comparator with selectable reference, two 16-bit timers, a real-time clock, and a UART. They include 128 bytes of RAM data memory and 1 kbyte of flash program memory that is organized into 256-byte sectors and 16-byte pages and that supports single-byte erasing. The LPC9102 and LPC9103 have a voltage range supporting operation from 2.4 to 3.6V.

These devices are available in a 10-pin HVSON package and provide eight of those pins for 5V-tolerant I/O when using the internal oscillator and reset options. All of the port pins are 20-mA LED sink-capable, and the device can support a maximum current of 120 mA. The current draw in power-down mode with comparators disabled is less than 1 μA. These devices are available now for 87 cents (10,000).

Royal Philips Electronics, www.semiconductors.philips.com.