Epson RX8111CE - Time Update Interrupt Function Diagram

RX8111CE
Page − 33
ETM61E-01
14.4.2. Time update interrupt function diagram
Figure 24 Time Update Interrupt block diagram
UIE bit
/INT output
UF bit
Carry
tRTN
period
period
period
period
" 1 "
" 0 "
Hi - Z
" L "
" 1 "
" 0 "
Clearing UF bit" 0 "
does not change
/INT status.
Internal Operation
Write Operation
 Clearing UIE bit
" 0 " makes /INT
“Hi-Z” before tRTN
period.
Figure 25 Time Update timing chart
/
I
N
T
Carry Sec.
UF
Flag
/tRTN
Carry Min.
UF clears to Zero.
USEL bit
Update
Control
Circuit
F64Hz
UIE bit