P89LPC952

P89LPC952/954 8-bit microcontroller with accelerated two-clock 80C51 core 8 kB/16 kB 3 V byte-erasable flash with 10-bit ADC Rev. 04 — 24 July 2008 Product data sheet 1. General description The P89LPC952/954 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 P89LPC952/954 in order to reduce component count, board space, and system cost. 2. Features 2.1 Principal features I 8 kB/16 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. I 256-byte RAM data memory and a 256-byte auxiliary on-chip RAM. I 8-input multiplexed 10-bit ADC with window comparator that can generate an interrupt for in or out of range results. Two analog comparators with selectable inputs and reference source. I Two 16-bit counter/timers (each may be configured to toggle a port output upon timer overflow or to become a PWM output) and a 23-bit system timer that can also be used as a RTC. I Two enhanced UARTs with a fractional baud rate generator, break detect, framing error detection, and automatic address detection; 400 kHz byte-wide I2C-bus communication port and SPI communication port. I High-accuracy internal RC oscillator option, with clock doubler option, allows operation witho...