TimeCountCalculator app for iPhone and iPad
8051 timing counting calculator
Mode 0 is the 13-bit timer counting mode, mode 1 is the 16-bit timer counting mode (which is the most common mode), mode 2 is the 8-bit automatic reloading initial value counting mode, mode 3 is only applicable to T0, and 16-bit T0 is divided into Two 8-bit timer counters