Diagram Of Wake-Up Timer Interrupt Function - Epson RX4111CE Applications Manual

14.2.4. Diagram of Wake-up Timer Interrupt Function

TMPIN bit
TIE bit
Source clock
4096 Hz
64 Hz
1 Hz
1/60 Hz
TSEL[1:0]
TE
TF ( 0 clear )
Figure 23 Wake-up Timer Block Diagram
Wake-up Timer starts
TE bit
TIE bit
/INT output
TF bit
Timer borrow
is occurred.
Internal operation
Write operation
Figure 24 Wake-up Timer Timing Chart
After the interruption occurs when the count value changes from 1hto 0h, the counter automatically reloads the preset
value and again starts to count down. (Repeated operation)
The countdown that starts when the TE bit value changes from 0to 1 always begins from the preset value.
RX4111CE
ETM62E-02
24 bit
Down Counter
Wake-up Timer works.
tRTN2
period period
When TE bit or TF bit or TIE bit is cleared, /INT output is released without waiting for tRTN2.
Seiko Epson Corporation
FOUT
/tRTN2
Timer Control
Circuit
tRTN2 tRTN2
period period
14. How to use

FOUT
/INT
TF Flag
"1"
Wake-up Timer stops
"0"
"1"
"0"
Hi-z
"L"
tRTN2
"1"
"0"
Jump to Top / Bottom
31