X25401
EQUIVALENT A.C. LOAD CIRCUIT
A.C. CONDITIONS OF TEST
5V
Input Pulse Levels
0V to 3V
Input Rise and
Fall Times
919Ω
10ns
1.5V
Input and Output
Timing Levels
OUTPUT
2051 PGM T07.1
100pF
497Ω
2051 FHD F03
A.C. CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Read and Write Cycle Limits
Symbol
Parameter
Min.
Max.
Units
(3)
F
SCK Frequency
1
MHz
ns
ns
ns
ns
ns
ns
µs
ns
ns
SK
SCKH
SCKL
DS
t
t
t
t
t
t
t
t
t
t
SCK Positive Pulse Width
SCK Negative Pulse Width
Data Setup Time
400
400
400
80
Data Hold Time
DH
SCK to Data Bit 0 Valid
SCK to Data Valid
375
375
1
PD1
PD
Chip Select to Output High Z
Chip Select Setup
Z
800
350
800
CSS
CSH
CDS
Chip Select Hold
Chip Deselect
ns
2051 PGM T08.1
POWER-UP TIMING
Symbol
Parameter
Max.
Units
(4)
t
t
Power-up to Read Operation
200
5
µs
PUR
(4)
Power-up to Write or Store Operation
ms
PUW
2051 PGM T09
Notes: (3) SCK rise and fall times must be less than 50ns.
(4) t and t are the delays required from the time V is stable until the specified operation can be initiated. These parameters
PUR
PUW
CC
are periodically sampled and not 100% tested.
8
XICOR [ XICOR INC. ]
