4 ac characteristics – Rainbow Electronics AT45DB021E User Manual
Page 46
46
AT45DB021E [PRELIMINARY DATASHEET]
8789B–DFLASH–11/2012
18.4 AC Characteristics
Note:
1. Values are based on device characterization, not 100% tested in production.
Symbol
Parameter
1.65V to 3.6V
2.3V to 3.6V
Min
Typ
Max
Min
Typ
Max
Units
f
SCK
SCK Frequency
70
70
MHz
f
CAR1
SCK Frequency for Continuous Read
70
70
MHz
f
CAR2
SCK Frequency for Continuous Read
(Low Frequency)
33
33
MHz
f
CAR3
SCK Frequency for Continuous Read
(Low Power Mode – 01h Opcode)
20
20
MHz
t
WH
SCK High Time
6.4
6.4
ns
t
WL
SCK Low Time
6.4
6.4
ns
t
SCKR
SCK Rise Time, Peak-to-peak
0.1
0.1
V/ns
t
SCK Fall Time, Peak-to-peak
0.1
0.1
V/ns
t
CS
Minimum CS High Time
30
30
ns
t
CSS
CS Setup Time
6
5
ns
t
CSH
CS Hold Time
5
5
ns
t
SU
Data In Setup Time
2
2
ns
t
H
Data In Hold Time
1
1
ns
t
HO
Output Hold Time
0
0
ns
t
DIS
Output Disable Time
8
6
ns
t
V
Output Valid
8
6
ns
t
WPE
WP Low to Protection Enabled
1
1
μs
t
WPD
WP High to Protection Disabled
1
1
μs
t
LOCK
Freeze Sector Lockdown Time
(from CS High)
200
200
μs
t
EUDPD
CS High to Ultra-Deep Power-Down
3
3
μs
t
CSLU
Minimum CS Low Time to Exit Ultra-Deep
Power-Down
20
20
ns
t
XUDPD
Exit Ultra-Deep Power-Down Time
240
120
μs
t
EDPD
CS High to Deep Power-Down
3
3
μs
t
RDPD
Resume from Deep Power-Down Time
35
35
μs
t
XFR
Page to Buffer Transfer Time
100
85
μs
t
COMP
Page to Buffer Compare Time
100
85
μs
t
RST
RESET Pulse Width
10
10
μs
t
REC
RESET Recovery Time
1
1
μs
t
SWRST
Software Reset Time
30
30
μs