IAR-KSK-IMX25 Freescale Semiconductor, IAR-KSK-IMX25 Datasheet - Page 65

• Manufacturer Part Number: IAR-KSK-IMX25
• Description: KIT DEVELOPMENT I.MX257, ARM926
• Manufacturer: Freescale Semiconductor
• Series: i.MX25r
• Type: MCUr

Specifications of IAR-KSK-IMX25

• Contents: Board, Cables, CD, Debugger, Power Supply
• Processor To Be Evaluated: I.MX257
• Processor Series: i.MX25
• Data Bus Width: 16 bit
• Interface Type: UART, JTAG, USB, Ethernet, SD/MMC
• Core: ARM926EJ-S
• Silicon Manufacturer: Freescale
• Core Architecture: ARM
• Core Sub-architecture: ARM9
• Silicon Core Number: I.MX2
• Silicon Family Name: I.MX25
• Mcu Supported Families: I.MX25
• For Use With/related Products: i.MX25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 50
slew rate of 2 V/ns.
Freescale Semiconductor
DDR4
DDR5
DDR6
DDR7
Slew Rate (V/Ns)
ID
Command/
Address
0.25
0.15
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
shows values for a command/address slew rate of 1 V/ns and an SDCLK, SDCLK_B differential
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 8
Table 51
CS, RAS, CAS, CKE, WE setup time
CS, RAS, CAS, CKE, WE hold time
Table 50. DDR2 SDRAM Timing Parameter Table (continued)
Table 51. tlS, tlH Derating Values for DDR2-400, DDR2-533
–1450
+187
+179
+167
+150
+125
–110
–175
–285
–350
–525
–800
ΔtlS
+83
–11
–25
–43
–67
Address output setup time
Address output hold time
0
shows additional values for DDR2-400 and DDR2-533.
2.0 V/ns
Parameter
–1125
–125
–188
–292
–375
–500
–708
ΔtlH
+94
+89
+83
+75
+45
+21
–14
–31
–54
–83
0
CK, CK Differential Slew Rate
–1420
+217
+209
+197
+180
+155
+113
–145
–255
–320
–495
–770
ΔtlS
+30
+19
–13
–37
–80
+5
1.5 V/ns
–1095
+124
+119
+113
+105
–158
–262
–345
–470
–678
ΔtlH
+75
+51
+30
+16
–24
–53
–95
–1
Symbol
t
t
t
t
IS
IH
IS
IH
–1390
+247
+239
+227
+210
+185
+143
–115
–225
–290
–465
–740
ΔtlS
+60
+49
+35
+17
–50
–7
1.0 V/ns
0.475
0.475
Min.
0.35
0.35
DDR2-400
–1065
+154
+149
+143
+135
+105
–128
–232
–315
–440
–648
ΔtlH
+81
+60
+46
+29
–23
–65
+6
Max.
—
—
—
—
Units
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
Unit
ns
ns
ns
ns
65