Owner's manual

13
AT45DB021B
1937F–DFLSH–10/02
AC Characteristics
Symbol Parameter Min Max Units
f
SCK
SCK Frequency 20 MHz
f
CAR
SCK Frequency for Continuous Array Read 20 MHz
t
WH
SCK High Time 22 ns
t
WL
SCK Low Time 22 ns
t
CS
Minimum CS High Time 250 ns
t
CSS
CS Setup Time 250 ns
t
CSH
CS Hold Time 250 ns
t
CSB
CS High to RDY/BUSY Low 200 ns
t
SU
Data In Setup Time 5 ns
t
H
Data In Hold Time 10 ns
t
HO
Output Hold Time 0 ns
t
DIS
Output Disable Time 18 ns
t
V
Output Valid 20 ns
t
XFR
Page to Buffer Transfer/Compare Time 250 µs
t
EP
Page Erase and Programming Time 20 ms
t
P
Page Programming Time 14 ms
t
PE
Page Erase Time 8ms
t
BE
Block Erase Time 12 ms
t
RST
RESET Pulse Width 10 µs
t
REC
RESET Recovery Time 1 µs