Page 34
Epson Research and Development
Vancouver Design Center
S1D13704
Hardware Functional Specification
X26A-A-001-04
Issue Date: 01/02/08
7.2 Clock Input Requirements
Figure 7-7: Clock Input Requirements
Note
When CLKI is > 25MHz it must be divided by 2 (REG[02h] bit 4 = 1).
Table 7-7: Clock Input Requirements
Symbol
Parameter
Min
Max
Units
f
CLKI
Input Clock Frequency (CLKI)
0
50
MHz
T
CLKI
Input Clock period (CLKI)
1/f
CLKI
t
PWH
Input Clock Pulse Width High (CLKI)
8
ns
t
PWL
Input Clock Pulse Width Low (CLKI)
8
ns
t
f
Input Clock Fall Time (10% - 90%)
5
ns
t
r
Input Clock Rise Time (10% - 90%)
5
ns
t
PWL
t
PWH
t
f
Clock Input Waveform
tr
T
CLKI
V
IH
VIL
10%
90%
*