SM8578BV
(2) Periodic mode (TI/TP = “1”)
I
I
If TIE = “1” when the interrupt occurs, output INTN goes LOW.
If TIE = “0” when the interrupt occurs, output INTN stays high impedance and the TF bit is set to “1”,
and this condition is maintained.
"1"
TIE bit
t
RTN
INTN output
Auto-return
"1"
TF bit
"0"
Timer interrupt
timing
"0"
Hi
−
Z
LOW
−
level
Data 0 written to TF
* Auto-return: The auto-return time (t
RTN
) is determined by the source clock set by register C.
Source clock
4096Hz
64Hz
1Hz
1/60Hz
Auto-return time (t
RTN
)
0.122ms
7.81ms
0.5s
0.122ms
NIPPON PRECISION CIRCUITS INC.—12
NPC [ NIPPON PRECISION CIRCUITS INC ]
