Fremont Micro Devices FT25C16A DS
WRITE INST
S C L
S I
S O
HI-Z
0 1 2 3 4 5 6 7 8 9 22 23 24 25 26 27 28 29 30 31
15 14 1 0
7 6 5 4 3 2 1 0
DATA IN
Byte Address
S C
Figure 10: WRITE Timing
AC CHARACTERISTICS
Applicable over recommended operating range from: T
AI
=-40 to +85℃℃，V
CC
= As Specified, C
L
= 1 TTL
Gate and 30 pF (unless otherwise noted)
FT25C16A
1.8-2.7 V 2.7-4.5 V 4.5-5.5 V
Symbol
Parameter
Min Max Min Max Min Max
Unit
f
SCK
Clock frequency, SCK 5 10 20 MHz
t
RI
Input Rise Time 2 2 2 µs
t
FI
Input Fall Time 2 2 2 µs
t
WH
SCK High Time 80 40 20 ns
t
WL
SCK Low Time 80 40 20 ns
t
CS
CS High Time
100 50 25 ns
t
CSS
CS Setup Time
100 50 25 ns
t
CSH
CS Hold Time
100 50 25 ns
t
SU
Data In Setup Time 20 10 5 ns
t
H
Data In Hold Time 20 10 5 ns
t
HD
HOLD Setup Time
20 10 5 ns
t
CD
HOLD Hold Time
20 10 5 ns
t
V
Output Valid 0 80 0 40 0 20 ns
t
HO
Output Hold Time 0 0 0 ns
t
LZ
HOLD to Output Low Z
0 100 0 50 0 25 ns
t
HZ
HOLD to Output High Z
200 80 40 ns
t
DIS
Output Disable Time 200 80 40 ns
t
WC
Write Cycle Time 5 5 5 ms
© 2013 Fremont Micro Devices Inc. Confidential Rev0.80 DS25C16A - Page10
