1 kB byte-erasable Flash code memory organized into 256-byte sectors and 16-byte pages. Single-byte erasing allows any byte(s) to be used as non-volatile data storage. n 128-byte RAM data memory. n Two 16-bit counter/timers. (P89LPC901 Timer 0 may be configured to toggle a port output upon timer overflow or to become a PWM output.) n 23-bit system timer that can also be used as a Real-Time clock. n Two *og comparators (P89LPC902 and P89LPC903, single *og comparator on P89LPC901). n Enhanced UART with fractional baudrate generator, break detect, framing error detection, automatic address detection and versatile interrupt capabilities (P89LPC903). n High-accuracy internal RC oscillator option allows operation without external oscillator components. The RC oscillator (factory calibrated to ±1 %) option is selectable and fine tunable. n 2.4 V to 3.6 V VDD operating range with 5 V tolerant I/O pins (may be pulled up or driven to 5.5 V). Industry-standard pinout with VDD, VSS, and reset at locations 1, 8, and 4. n Up to six I/O pins when using internal oscillator and reset options. n 8-pin SO-8 package.
