參數(shù)資料
型號： SAF-XC2287M-72F80LAA
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： RISC MICROCONTROLLER, PQFP144
封裝： 0.50 mm pitch, GREEN, PLASTIC, LQFP-144
文件頁數(shù)： 10/142頁
文件大?。?/td> 1112K
代理商： SAF-XC2287M-72F80LAA
XC2287M, XC2286M, XC2285M
XC2000 Family Derivatives / Base Line
Electrical Parameters
Data Sheet
107
V2.0, 2009-03
4.5
Flash Memory Parameters
The XC228xM is delivered with all Flash sectors erased and with no protection installed.
The data retention time of the XC228xM’s Flash memory (i.e. the time after which stored
data can still be retrieved) depends on the number of times the Flash memory has been
erased and programmed.
Note: These parameters are not subject to production test but verified by design and/or
characterization.
Note: Operating Conditions apply.
Table 23
Flash Characteristics
Parameter
Symbol
Limit Values
Unit
Note / Test
Condition
Min.
Typ.
Max.
Programming time per
128-byte page
t
PR
–31)
1) Programming and erase times depend on the internal Flash clock source. The control state machine needs a
few system clock cycles. This requirement is only relevant for extremely low system frequencies.
3.5
ms
Erase time per
sector/page
t
ER
8ms
ms
Data retention time
t
RET
20
–
years
1,000 erase /
program
cycles
Flash erase endurance for
user sectors2)
2) A maximum of 64 Flash sectors can be cycled 15,000 times. For all other sectors the limit is 1,000 cycles.
N
ER
15,000 –
–
cycles Data retention
time 5 years
Flash erase endurance for
security pages
N
SEC
10
–
cycles Data retention
time 20 years
Drain disturb limit
N
DD
32
–
cycles 3)
3) This parameter limits the number of subsequent programming operations within a physical sector. The drain
disturb limit is applicable if wordline erase is used repeatedly. For normal sector erase/program cycles this
limit will not be violated.
Parallel Flash module
program/erase limit,
depending on the Flash
read activity
N
PP
–
1
–
Unrestricted4)
execution
4) Flash module 3 can be erased/programmed while code is executed and/or data is read from any other Flash
modules.
–
4
–
Restricted5)
execution
5) All Flash modules can be erased/programmed while code is executed and/or data is read from only one Flash
module or from PSRAM.
The Flash module that delivers code/data can, of course, not be erased/programmed.
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