PCIMX258CJM4A datasheet(32/144 Pages) FREESCALE

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i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 3

Freescale Semiconductor

Note:

1.Maximum condition for tpr, tpo, and tpv: wcs model, 1.1 V, IO 3.0 V and 105 °C. Minimum condition for tpr, tpo, and tpv: bcs

model, 1.3 V, IO 3.6 V and –40 °C. Input transition time from core is 1ns (20%–80%).

2. Minimum condition for tps: wcs model, 1.1 V, IO 3.0 V and 105 °C. tps is measured between VIL to VIH for rising edge and

between VIH to VIL for falling edge.

3. Maximum condition for tdit: bcs model, 1.3 V, IO 3.6 V and –40 °C.

4. Maximum condition for tpi and trfi: wcs model, 1.1 V, IO 3.0 V and 105 °C. Minimum condition for tpi and trfi: bcs model, 1.3 V,

IO 3.6 V and –40 °C. Input transition time from pad is 5ns (20%–80%).

5. Hysteresis mode is recommended for input with transition time greater than 25 ns.

3.6.3

DDR I/O AC Parameters

The DDR pad type is configured by the IOMUXC_SW_PAD_CTL_GRP_DDRTYPE register (see

Chapter 4, “External Signals and Pin Multiplexing,” in the i.MX25 Multimedia Applications Processor

Reference Manual).

Output Pad di/dt (Max Drive)

didt

25 pF

50 pF

108

113

250

262

mA/ns

Output Pad di/dt (High Drive)

didt

25 pF

50 pF

197

207

mA/ns

Output Pad di/dt (Standard Drive)

didt

25 pF

50 pF

116

121

mA/ns

Input Pad Propagation Delay without

Hysteresis, 50%–50%

tpi

1.6pF

0.729/0.458 0.97/0.0649

1.404/0.97

Input Pad Propagation Delay with Hysteresis,

50%–50%

tpi

1.6pF

1.203/0.938 1.172/1.187 1.713/1.535

Input Pad Propagation Delay without

Hysteresis, 40%–60%

tpi

1.6pF

0.879/0.977

1.434/1.12

1.854/1.427

Input Pad Propagation Delay with Hysteresis,

40%–60%

tpi

1.6pF

1.353/1.457 1.637/1.659 2.163/1.991

Input Pad Transition Times without Hysteresis

trfi

1.6pF

0.16/0.12

0.23/0.18

0.33/0.29

Input Pad Transition Times with Hysteresis

trfi

1.6pF

0.16/0.13

0.22/0.18

0.33/0.29

Maximum Input Transition Times

trm

—

Table 21. Fast I/O AC Parameters for OVDD = 3.0–3.6 V (continued)

PCIMX258CJM4A Datasheet(PDF) 32 Page - Freescale Semiconductor, Inc

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