Epson RX8111CE - 14.4. Time Update Interrupt Function; 14.4.1. Related registers for time update interrupt functions.

RX8111CE
Page − 28
ETM61E-01
TIE bit
/INT output
TF bit
Event occurs
TE bit
tRTN
tRTN
tRTN
period
period
period
tRTN
period
" 1 "
" 0 "
" 1 "
" 0 "
Hi - Z
" L "
" 1 "
" 0 "
 TIE→ 0 or
TE → 0 makes
/INT clear
before tRTN period.
Operation of wake-up timer
Internal operation
Write operation
Wake-up timer start
Wake-up timer stops
 TF bit→ 0
makes /INT clear
before tRTN period.
Figure 21 Wake-up timer timing chart
After wake-up counter interrupt, pre-set data is re-loaded to counter. Count down repeats from pre-set value.
By setting TE, "0" → "1" wake-up counter starts counting down.
Pre-set value count down is available by setting TE “0” → “1” only.