13
FN8174.5
October 15, 2015
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Equivalent A.C. Load Circuit
5V
1462Ω
100pF
SO pin
R
H
10pF
C
L
C
L
R
W
R
TOTAL
C
W
25pF
10pF
R
L
SPICE MACROMODEL
2714Ω
3V
1382
100pF
SO pin
1217
AC Timing
SYMBOL PARAMETER MIN MAX UNITS
f
SCK
SSI/SPI Clock Frequency 2.5 MHz
t
CYC
SSI/SPI Clock Cycle Time 500 ns
t
WH
SSI/SPI Clock High Time 200 ns
t
WL
SSI/SPI Clock Low Time 200 ns
t
LEAD
Lead Time 250 ns
t
LAG
Lag Time 250 ns
t
SU
SI, SCK, HOLD and CS Input Setup Time 50 ns
t
H
SI, SCK, HOLD and CS Input Hold Time 50 ns
t
RI
SI, SCK, HOLD and CS Input Rise Time 2 µs
t
FI
SI, SCK, HOLD and CS Input Fall Time 2 µs
t
DIS
SO Output Disable Time 0 250 ns
t
V
SO Output Valid Time 200 ns
t
HO
SO Output Hold Time 0 ns
t
RO
SO Output Rise Time 100 ns
t
FO
SO Output Fall Time 100 ns
t
HOLD
HOLD Time 400 ns
t
HSU
HOLD Setup Time 100 ns
t
HH
HOLD Hold Time 100 ns
t
HZ
HOLD Low to Output in High Z 100 ns
t
LZ
HOLD High to Output in Low Z 100 ns
T
I
Noise Suppression Time Constant at SI, SCK, HOLD and CS Inputs 10 ns
t
CS
CS Deselect Time 2 µs
t
WPASU
WP, A0 Setup Time 0 ns
t
WPAH
WP, A0 Hold Time 0 ns
High-voltage Write Cycle Timing
SYMBOL PARAMETER TYP MAX UNITS
t
WR
High-voltage Write Cycle Time (Store Instructions) 5 10 ms
X9271
