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PCIMX258CJM4A bảng dữ liệu(PDF) 64 Page - Freescale Semiconductor, Inc

tên linh kiện PCIMX258CJM4A
Giải thích chi tiết về linh kiện  i.MX25 Applications Processor for Consumer and Industrial Products
PDF  144 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
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i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 3
64
Freescale Semiconductor
Table 48 shows values for a command/address slew rate of 1 V/ns and an SDCLK, SDCLK_B differential
slew rate of 2 V/ns. Table 49 shows additional values for DDR2-400 and DDR2-533.
Table 49. tlS, tlH Derating Values for DDR2-400, DDR2-533
Command/
Address
Slew Rate (V/Ns)
CK, CK Differential Slew Rate
Units
2.0 V/ns
1.5 V/ns
1.0 V/ns
ΔtlS
ΔtlH
ΔtlS
ΔtlH
ΔtlS
ΔtlH
4.0
+187
+94
+217
+124
+247
+154
ps
3.5
+179
+89
+209
+119
+239
+149
ps
3.0
+167
+83
+197
+113
+227
+143
ps
2.5
+150
+75
+180
+105
+210
+135
ps
2.0
+125
+45
+155
+75
+185
+105
ps
1.5
+83
+21
+113
+51
+143
+81
ps
1.0
0
0
+30
+30
+60
+60
ps
0.9
–11
–14
+19
+16
+49
+46
ps
0.8
–25
–31
+5
–1
+35
+29
ps
0.7
–43
–54
–13
–24
+17
+6
ps
0.6
–67
–83
–37
–53
–7
–23
ps
0.5
–110
–125
–80
–95
–50
–65
ps
0.4
–175
–188
–145
–158
–115
–128
ps
0.3
–285
–292
–255
–262
–225
–232
ps
0.25
–350
–375
–320
–345
–290
–315
ps
0.2
–525
–500
–495
–470
–465
–440
ps
0.15
–800
–708
–770
–678
–740
–648
ps
0.1
–1450
–1125
–1420
–1095
–1390
–1065
ps



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