X25401 查看數據表（PDF） - Xicor -> Intersil
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X25401 Datasheet PDF : 14 Pages
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X25401
EQUIVALENT A.C. LOAD CIRCUIT
5V
919Ω
OUTPUT
497Ω
100pF
2051 FHD F03
A.C. CONDITIONS OF TEST
Input Pulse Levels
Input Rise and
Fall Times
Input and Output
Timing Levels
0V to 3V
10ns
1.5V
2051 PGM T07.1
A.C. CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Read and Write Cycle Limits
Symbol
FSK(3)
tSCKH
tSCKL
tDS
tDH
tPD1
tPD
tZ
tCSS
tCSH
tCDS
POWER-UP TIMING
Parameter
SCK Frequency
SCK Positive Pulse Width
SCK Negative Pulse Width
Data Setup Time
Data Hold Time
SCK to Data Bit 0 Valid
SCK to Data Valid
Chip Select to Output High Z
Chip Select Setup
Chip Select Hold
Chip Deselect
Min.
400
400
400
80
800
350
800
Max.
1
375
375
1
Units
MHz
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
2051 PGM T08.1
Symbol
Parameter
Max.
Units
tPUR(4)
Power-up to Read Operation
200
tPUW(4)
Power-up to Write or Store Operation
5
µs
ms
2051 PGM T09
Notes: (3) SCK rise and fall times must be less than 50ns.
(4) tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated. These parameters
are periodically sampled and not 100% tested.
8
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