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AT45DB021B 数据表(PDF) 14 Page - ATMEL Corporation

部件名 AT45DB021B
功能描述  2-megabit 2.7-volt Only DataFlash
PDF  32 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT45DB021B 数据表(HTML) 14 Page - ATMEL Corporation

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



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