Fixed-Cycle Timer Interrupt Interval (Example); Fixed-Cycle Timer Start Timing - Epson RA8804 CE Applications Manual

RA8804 CE

8.3.3. Fixed-cycle timer interrupt interval (example)

Preset Value
4096 Hz
TSEL1,0 = 0,0
0
1
2



41
82
128
192
205
320
410
640
820
1229
1280
1920
2048
2560
3200
3840
4095



16777215

8.3.4. Fixed-cycle timer start timing

Counting down of the fixed-cycle timer value starts at the rising edge of the SCL signal that occurs when the TE
value is changed from 0 to "1"(after bit "0" is transferred).
SCL
SDA
TIMER
/ INT
64 Hz
TSEL1,0 = 0,1
 
244.14 s
488.28 s
 
 
 
10.010 ms
20.020 ms
31.250 ms
46.875 ms
50.049 ms
78.125 ms
100.10 ms
156.25 ms
200.20 ms
300.05 ms
312.50 ms
468.75 ms
500.00 ms
625.00 ms
0.7813 s
0.9375 s
0.9998 s
 
 
 
4096 sec. 3 days,49 min.4 sec.
Address 0Dh
TE
FSEL1 FSEL0 TSEL1
A
Source clock
"Second" update
TSEL1,0 = 1,0

15.625 ms
31.25 ms



640.63 ms
1.281 s
2.000 s
3.000 s
3.203 s
5.000 s
6.406 s
10.000 s
12.813 s
19.203 s
20.000 s
30.000 s
32.000 s
40.000 s
50.000 s
60.000 s
63.984 s



194 days
TSEL0 ACK
n n-1 n-2 n-3 , , 2 1 n n-1 n-2
Operation of timer
Page - 18
"Minute" update
TSEL1,0 = 1,1

1 s
2 s



41 s 41 min
82 s 82 min
128 s 128 min
192 s 192 min
205 s 205 min
320 s 320 min
410 s 410 min
640 s 640 min
820 s 820 min
1229 s 1229 min
1280 s 1280 min
1920 s 1920 min
2048 s 2048 min
2560 s 2560 min
3200 s 3200 min
3840 s 3840 min
4095 s 4095 min



32 years
n = Preset Value
ETM60E-02
1 min
2 min