8051 Timers

The document discusses timers in the 8051 microcontroller. It covers the following key points: - The 8051 has two timers, T0 and T1, that can be configured as event counters or timers. - Special function registers are used to control the timers' modes, counts, flags, and interrupts. - Timers count up and set flags when they overflow from their maximum count to 0. - Interrupts must be enabled for the timers and their overflow flags to trigger an interrupt service routine. - Reading the two bytes that make up a timer's count requires care to avoid inconsistencies due to the counter changing between reads.