CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51User’s Manual U16899EJ2V0UD 1977.5 Cautions for 8-Bit Timer/Event Counters 50 and 51(1) Timer start errorAn error of up to one clock may occur in the time required for a match signal to be generated after timer start.This is because 8-bit timer counters 50 and 51 (TM50, TM51) are started asynchronously to the count clock.Figure 7-16. 8-Bit Timer Counter 5n Start TimingCount clockTM5n count value 00H 01H 02H 03H 04HTimer startRemark n = 0, 1