P89LPC922A1

P89LPC9201/9211/922A1/9241/ 9251 8-bit microcontroller with accelerated two-clock 80C51 core 2 kB/4 kB/8 kB 3 V byte-erasable flash with 8-bit ADC Rev. 2.1 — 27 August 2012 Product data sheet 1. General description The P89LPC9201/9211/922A1/9241/9251 is a single-chip microcontroller, available in low cost packages, 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 device in order to reduce component count, board space, and system cost. 2. Features and benefits 2.1 Principal features  2 kB/4 kB/8 kB byte-erasable flash code memory organized into 1 kB sectors and 64-byte pages. Single-byte erasing allows any byte(s) to be used as non-volatile data storage.  256-byte RAM data memory.  4-input multiplexed 8-bit ADC/single DAC output (P89LPC9241/9251). Two analog comparators with selectable inputs and reference source.  On-chip temperature sensor integrated with ADC module (P89LPC9241/9251).  Two 16-bit counter/timers (each may be configured to toggle a port output upon timer overflow or to become a PWM output).  A 23-bit system timer that can also be used as real-time clock consisting of a 7-bit prescaler and a programmable and readable 16-bit timer.  Enhanced UART with a fractional baud rate generator, break detect, framing error detection, and automatic address detection; 400 kHz byte-wide I2C-bus communication ...