Ac Characteristics; System Clock Timing (32.768 Khz) - Epson S1V3G340 Hardware Specification

6. Electrical Characteristics
6.4
90% VIH
10% VIL
Symbol
f
OSC
T
OSC
t
pwh
t
pw
ｌ
t
r
t
f
t
CJper
t
CJcycle
*1
*2
*3
*4
*
18
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AC Characteristics

6.4.1

System Clock Timing (32.768 kHz)

t
PWH
1
1
t
r
t
cycle1
t
CJper
Figure 6.1 System clock timing (32.768 kHz)
Parameter
Input clock frequency
Input clock period
Input clock pulse width high
Input clock pulse width low
Input clock rising time (10% → 90%)
Input clock falling time (90% → 10%)
Input clock period jitter (*2, 4)
Input clock cycle jitter (*1, 3, 4)
t = t – t
CJcycle cycle1 cycle2
The input clock period jitter is the displacement relative to the center period (reciprocal of center
frequency).
The input clock cycle jitter is difference in period between adjacent cycles.
The jitter characteristics must meet both t
Great care must be taken to ensure that overshooting or undershooting does not occur for the clock.
t
PWL
t
f
T
OSC
t
cycle2
Min.
-
-
0.45*T
0.45*T
-
-
-5.0
-5.0
and t characteristics.
Cjper CJcycle
EPSON
Typ. Max.
32.768 -
1/fosc -
- 0.55*T
osc osc
- 0.55*T
osc osc
- 5.0
- 5.0
- 5.0
- 5.0
S1V3G340 Hardware Specification
(Rev. 1.0)
Unit
kHz
ms
ms
ms
μs
μs
ns
ns