8.2
AC Characteristics
Symbol
Parameter
Min
Max
Units
f SCK
f CAR
t WH
t WL
t CS
t CSS
t CSH
t CSB
t SU
t H
t HO
t DIS
t V
t XFR
t EP
t P
t PE
t BE
t RST
t REC
8.3
SCK Frequency
SCK Frequency for Continuous Array Read
SCK High Time
SCK Low Time
Minimum CS High Time
CS Setup Time
CS Hold Time
CS High to RDY/BUSY Low
Data In Setup Time
Data In Hold Time
Output Hold Time
Output Disable Time
Output Valid
Page to Buffer Transfer/Compare Time
Page Erase and Programming Time
Page Programming Time
Page Erase Time
Block Erase Time
RESET Pulse Width
RESET Recovery Time
Input Test Waveforms and Measurement Levels
22
22
250
250
250
5
10
0
10
20
20
200
18
20
250
20
14
8
12
1
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
ms
ms
ms
ms
μs
μs
AC
DRIVING
LEVELS
2.4V
0.45V
2.0
0.8
AC
MEASUREMENT
LEVEL
t R , t F < 3 ns (10% to 90%)
8.4
14
Output Test Load
AT45DB021B
DEVICE
UNDER
TEST
30 pF
1937J–DFLSH–9/05
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