Fujitsu F2MC-8L Series Hardware Manual page 199

CHAPTER 7 8/16-BIT TIMER/COUNTER
In 16-bit mode
The value in the T1DR register is compared to the counter value in the lower eight bits of the
16-bit timer. The register sets the lower eight bits of the interval time when the interval timer
function is used; it sets the lower eight bits of the count to be detected when the counter
function is used. The T1DR register value is loaded to the lower eight bits of the comparate
data latch upon start of counting and upon detection of a match with the 16-bit count value. The
value written to the T1DR register during operation of the 16-bit counter is made valid after a
match is detected.
Reference:
For the value set in the T1DR register when the interval timer function is used, see Section
7.4.4 "Timer 2 Data Register (T2DR)".
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