Renesas RL78/G15

RL78/G15 CHAPTER 6 TIMER ARRAY UNIT
R01UH0959EJ0110 Rev.1.10 Page 174 of 765
Mar 7, 2023
The TCRmn register read value differs as follows according to operation mode changes and the operating status.
Table 6-3. Timer Count Register mn (TCRmn) Read Value in Various Operation Modes
Operation Mode Count Mode Timer count register mn (TCRmn) Read Value
Note 1
Value if the
operation mode
was changed after
releasing reset
Value if the
Operation was
restarted after
count operation
paused (TTmn = 1)
Value if the
operation mode
was changed after
count operation
paused (TTmn = 1)
Value when waiting
for a start trigger
after one count
Interval timer mode Count down FFFFH Value if stop Undefined —
Capture mode Count up 0000H Value if stop Undefined —
Event counter mode Count down FFFFH Value if stop Undefined —
One-count mode Count down FFFFH Value if stop Undefined FFFFH
Capture & one-count
mode
Count up 0000H Value if stop Undefined
Capture value of
TDRmn register + 1
Note 1. This indicates the value read from the TCRmn register when channel n has stopped operating as a timer
(TEmn = 0) and has been enabled to operate as a counter (TSmn = 1). The read value is held in the TCRmn
register until the count operation starts.
Remark m: Unit number (m = 0), n: Channel number (n = 0 to 7)