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56F803 датащи(PDF) 28 Page - Freescale Semiconductor, Inc

номер детали 56F803
подробное описание детали  16-bit Digital Signal Controllers
PDF  57 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

56F803 датащи(HTML) 28 Page - Freescale Semiconductor, Inc

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Flash Memory Characteristics
56F803 Technical Data, Rev. 16
Freescale Semiconductor
23
Figure 3-2 Input Signal Measurement References
Figure 3-3 shows the definitions of the following signal states:
•
Active state, when a bus or signal is driven, and enters a low impedance state
•
Tri-stated, when a bus or signal is placed in a high impedance state
•
Data Valid state, when a signal level has reached VOL or VOH
•
Data Invalid state, when a signal level is in transition between VOL and VOH
Figure 3-3 Signal States
3.4 Flash Memory Characteristics
Table 3-5 Flash Memory Truth Table
Mode
XE1
1.
X address enable, all rows are disabled when XE = 0
YE2
2.
Y address enable, YMUX is disabled when YE = 0
SE3
3.
Sense amplifier enable
OE4
4.
Output enable, tri-state Flash data out bus when OE = 0
PROG5
ERASE6
MAS17
NVSTR8
Standby
L
L
L
L
L
L
L
L
Read
H
HHH
L
L
L
L
Word Program
H
H
L
L
H
LLH
Page Erase
H
L
L
L
L
H
L
H
Mass Erase
H
L
L
L
L
H
H
H
VIH
VIL
Fall Time
Input Signal
Note: The midpoint is VIL + (VIH – VIL)/2.
Midpoint1
Low
High
90%
50%
10%
Rise Time
Data Invalid State
Data1
Data2 Valid
Data
Tri-stated
Data3 Valid
Data2
Data3
Data1 Valid
Data Active
Data Active



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