IMX28CEC datasheet(17/70 Pages) FREESCALE

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i.MX28 Applications Processors Data Sheet for Consumer Products, Rev. 1

Freescale Semiconductor

3.1.3

Fusebox Supply Current Parameters

Table 19 lists the fusebox supply current parameters.

3.1.4

Interface Frequency Limits

Table 20 provides information for interface frequency limits.

Table 17. Recommended Operating Conditions—AHB Clock (clk_h)

Minimum

VDDD (V)

Minimum

VDDDBrown-out (V)

HW_DIGCTRL

ARMCACHE1

1 All timing control bit fields in HW_DIGCTRL_ARMCACHE should be set to the same value.

HW_CLKCTRL

FRAC_CPUFRC / PFD

AHBCLK / clk_h

Frequency max (MHz)

TBD

27 - 35

TBD

1.350

1.250

18 - 35

160

1.450

1.350

18 - 35

196

1.550

1.45

18 - 35

206

Table 18. Frequency vs. Voltage for EMICLK—289-Pin BGA Package

Minimum

VDDD (V)

Minimum

VDDDBrownout (V)

EMICLK Fmax (MHz)

DDR2

mDDR

1.550

1.450

205.71

1.450

1.350

196.36

1.350

1.250

196.36

Table 19. Fusebox Supply Current Parameters

Parameter

Symbol

Min

Typ

Max

Units

eFuse Program Current1

Current to program one eFuse bit

efuse_vddq=2.5V

1 The current I

program is during program time.

Iprogram

21.39

25.05

33.54

eFuse Read Current2

Current to read an 8-bit eFuse word

vdd_fusebox = 3.3 V

2 The current I

read is present for approximately 10 ns of the read access to the 8-bit word.

Iread

—

4.07

Table 20. Interface Frequency Limits

Parameter

Min.

Typ.

Max.

Units

JTAG: TCK Frequency of Operation

—

MHz

OSC24M_XTAL Oscillator

—

24.000

—

MHz

OSC32K_XTAL Oscillator

—

32.768/32.0

—

KHz

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