P89LPC9221FDH

The P89LPC9221FDH is a single-chip microcontroller from Philips, based on a high-performance processor architecture that executes instructions in two to four clocks, offering six times the rate of standard 80C51 devices. This device is designed for applications requiring high integration and low cost.

Key features include 8 kB of Flash code memory with 1 kB erasable sectors and 256 bytes of RAM data memory. It is equipped with two 16-bit counter/timers, a real-time clock, two analog comparators, and an enhanced UART with a fractional baud rate generator. The microcontroller supports a 400 kHz I2C-bus communication port and an on-chip oscillator with selectable frequency options up to 18 MHz.

The operating voltage range is from 2.4 V to 3.6 V, with I/O pins being 5 V tolerant. The P89LPC9221FDH is available in TSSOP and DIP packages, offering flexibility for various board designs. Its high-performance CPU provides instruction cycle times as low as 111 ns at 18 MHz, enabling power savings and reduced EMI.

This microcontroller supports In-Application Programming (IAP) of the Flash code memory, allowing code changes in a running application. Serial Flash programming simplifies in-circuit production coding, and Flash security bits protect sensitive application programs. A watchdog timer with a separate on-chip oscillator is also included, requiring no external components.