The accuracy is determined by the clock source. Even greater intervals can be timed using the auto-repeat timer function. The time interval begins upon receipt of the command. Like all other timing functions, any command from the Stamp will also stop the timer. The timer counter is then available for readback to the Stamp, showing how many microseconds had elapsed when the counter stopped.
Timing begins on the first appropriate edge following receipt of the command.
Only a command from the Stamp terminates this function. This is the default operating mode for the TM-1. Stamp-generated commands transmitted over the serial line initiate all of these timer and LCD functions. Each command code is one byte in length. When any command is received, the current timer function stops and the TM-1 executes the new function.