X76F640 Datasheet, PDF (13/17 Pages) Xicor Inc. – Secure SerialFlash

X76F640
CS Timing Diagram (Selecting/Deselecting the Part)
SCL
CS
from
master
t_SU:CS
RST Timing Diagram – Response to a Synchronous Reset
t_SR
CS
RST
t_NOL
CLK
I/O
t_RST
1st
clk
pulse
t_RDV
t_NOL
t_SU:RST
tHIGH_RST
2nd
clk
pulse
t_CDV
DATA BIT (1)
t_HD:CS
tLOW_RST
3rd
clk
pulse
DATA BIT (2)
7025 FM 20
CS
RST
CLK
I/O
DATA BIT (N)
DATA BIT (N+1)
t_DHZ
(N+2)
GUIDELINES FOR CALCULATING TYPICAL VALUES OF BUS PULL UP RESISTORS
100
80
R_MAX
60
40
20 _RMIN
20 ^{40 60 80 100}
Bus capacitance in pF
R
MIN
V
= ---_I^C---^C---^M---^A---^X---------=-- 1.8KΟ
OLMIN
R
MAX
t
= -_C----^R------------
BUS
t_R = maximum allowable SDA rise time
13
7025 FM 21
7025 FM 22