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AT25DF021 数据表(PDF) 33 Page - ATMEL Corporation

部件名 AT25DF021
功能描述  2-Megabit 2.3-volt or 2.7-volt Minimum SPI Serial Flash Memory
PDF  41 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT25DF021 数据表(HTML) 33 Page - ATMEL Corporation

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33
3677D–DFLASH–04/09
AT25DF021
Notes: 1. Not 100% tested (value guaranteed by design and characterization).
2. 15 pF load at frequencies above 66 MHz, 30 pF otherwise.
3. Only applicable as a constraint for the Write Status Register command when SPRL = 1.
Note:
1. Maximum values indicate worst-case performance after 100,000 erase/program cycles.
2. Not 100% tested (value guaranteed by design and characterization).
tWPS
(1)(3)
Write Protect Setup Time
20
20
ns
tWPH(1)(3)
Write Protect Hold Time
100
100
ns
tSECP(1)
Sector Protect Time (from Chip Select High)
20
20
ns
tSECUP
(1)
Sector Unprotect Time (from Chip Select High)
20
20
ns
tEDPD(1)
Chip Select High to Deep Power-Down
3
3
µs
tRDPD(1)
Chip Select High to Standby Mode
30
30
µs
14.6 Program and Erase Characteristics
Symbol
Parameter
Min
Typ
Max
Units
tPP(1)
Page Program Time (256 Bytes)
1.0
5.0
ms
tBP
Byte Program Time
7µs
tBLKE(1)
Block Erase Time
4 Kbytes
50
200
ms
32 Kbytes
250
600
64 Kbytes
450
950
tCHPE(1)(2)
Chip Erase Time
2.0
3.5
sec
tOTPP
(1)
OTP Security Register Program Time
200
500
µs
tWRSR
(2)
Write Status Register Time
200
ns
14.7 Power-up Conditions
Symbol
Parameter
Min
Max
Units
tVCSL
Minimum VCC to Chip Select Low Time
1.2
ms
tPUW
Power-up Device Delay Before Program or Erase Allowed
10
ms
VPOR
Power-on Reset Voltage
1.5
2.2
V
14.5 AC Characteristics – All Other Parameters (Continued)
Symbol
Parameter
AT25DF021
(2.3V Version)
AT25DF021
(2.7V Version)
Units
Min
Max
Min
Max



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