X25128
EQUIVALENT A.C. LOAD CIRCUIT
5V
1.44KΩ
OUTPUT
1.95KΩ
1.64KΩ
OUTPUT
4.63KΩ
3V
A.C. CONDITIONS OF TEST
Input Pulse Levels
Input Rise and Fall
Times
100pF
V
CC
x 0.1 to V
CC
x 0.9
10ns
V
CC
X 0.5
3091 FM T11
100pF
Input and Output
Timing Levels
3091 FM F09.1
A.C. OPERATING CHARACTERISTICS
(Over recommended operating conditions, unless otherwise specified.)
Data Input Timing
Symbol
f
SCK
t
CYC
t
LEAD
t
LAG
t
WH
t
WL
t
SU
t
H
t
RI(4)
t
FI(4)
t
HD
t
CD
t
CS
t
WC(5)
Clock Frequency
Cycle Time
CS Lead Time
CS Lag Time
Clock HIGH Time
Clock LOW Time
Data Setup Time
Data Hold Time
Data In Rise Time
Data In Fall Time
HOLD Setup Time
HOLD Hold Time
CS Deselect Time
Write Cycle Time
100
100
2.0
10
Parameter
Min.
0
500
250
250
200
200
50
50
Max.
2
Units
MHz
ns
ns
ns
ns
ns
ns
ns
2
2
µs
µs
ns
ns
µs
ms
3091 FM T12.2
Data Output Timing
Symbol
f
SCK
t
DIS
t
V
t
HO
t
RO(4)
t
FO(4)
t
LZ(4)
t
HZ(4)
Clock Frequency
Output Disable Time
Output Valid from Clock LOW
Output Hold Time
Output Rise Time
Output Fall Time
HOLD HIGH to Output in Low Z
HOLD LOW to Output in Low Z
100
100
0
100
100
Parameter
Min.
0
Max.
2
250
200
Units
MHz
ns
ns
ns
ns
ns
ns
ns
3091 FM T13.2
Notes:
(4) This parameter is periodically sampled and not 100% tested.
(5) t
WC
is the time from the rising edge of CS after a valid write sequence has been sent to the end of the self-timed internal
nonvolatile write cycle.
9
ICMIC [ IC MICROSYSTEMS ]
