P89LPC925 Datasheet | NXP Semiconductors

description The P89LPC924/925 are single-chip microcontrollers designed for applications demanding high-integration, low cost solutions over a wide range of performance requirements. The P89LPC924/925 is based on a high performance processor architecture that executes instructions in two to four clocks, six times the rate of standard 80C51 devices. Many system-level functions have been incorporated into the P89LPC924/925 in order to reduce ponent count, board space, and system cost. 2. Features 2.1 Principal features s 4 k B/8 k B Flash code memory with 1 k B erasable sectors, 64-byte erasable page size, and single byte erase. s 256-byte RAM data memory. s Two 16-bit counter/timers. Each timer may be configured to toggle a port output upon timer overflow or to bee a PWM output. s Real-Time clock that can also be used as a system timer. s 4-input 8-bit multiplexed A/D converter/single DAC output. Two analog parators with selectable inputs and reference source. s Enhanced UART with fractional baud rate generator, break detect, framing error detection, automatic address detection and versatile interrupt capabilities. s 400 k Hz byte-wide I2C-bus munication port. s Configurable on-chip oscillator with frequency range and RC oscillator options (selected by user programmed Flash configuration bits). The RC oscillator (factory calibrated to ±1 %) option allows operation without external oscillator ponents. Oscillator options support frequencies from 20 k Hz to the maximum operating frequency of 18 MHz. The RC oscillator option is selectable and fine tunable. s 2.4 V to 3.6 V VDD operating range. I/O pins are 5 V tolerant (may be pulled up or driven to 5.5 V). s 15 I/O pins minimum. Up to 18 I/O pins while using on-chip oscillator and reset options. Philips Semiconductors P89LPC924/925 8-bit microcontrollers with accelerated two-clock 80C51 core 2.2 Additional features s 20-pin TSSOP package. s A high performance 80C51 CPU provides instruction cycle times of 111 ns to 222 ns for...