MPC8241EC datasheet(11/58 Pages) FREESCALE

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MPC8241 Integrated Processor Hardware Specifications, Rev. 10

Freescale Semiconductor

Electrical and Thermal Characteristics

4.2.1

Output Driver Characteristics

Table 4 provides information on the characteristics of the output drivers referenced in Table 16. The values

are preliminary estimates from an IBIS model and are not tested.

Capacitance

Vin = 0 V, f = 1 MHz

Cin

—

16.0

Notes:

1. See Table 16 for pins with internal pull-up resistors.

2. All grounded pins are connected together.

3. Leakage current is measured on input and output pins in the high-impedance state. The leakage current is measured for

nominal GVDD_OVDD/LVDD and VDD or both GVDD_OVDD/LVDD and VDD must vary in the same direction.

4. See Table 4 for the typical drive capability of a specific signal pin based on the type of output driver associated with that pin

as listed in Table 16.

Table 4. Drive Capability of MPC8241 Output Pins 5, 6

Driver Type

Programmable Output

Impedance

(

Ω)

Supply Voltage

IOH

IOL

Unit

Notes

DRV_STD_MEM

20 (default)

GVDD_OVDD = 3.3 V

36.6

18.0

2, 4

18.6

9.2

2, 4

DRV_PCI

12.0

12.4

1, 3

40 (default)

6.1

6.3

1, 3

DRV_MEM_CTRL

DRV_PCI_CLK

DRV_MEM_CLK

6 (default)

89.0

42.3

2, 4

36.6

18.0

2, 4

18.6

9.2

2, 4

Notes:

1. For DRV_PCI, IOH read from the IBIS listing in the pull-up mode, I(Min) column, at the 0.33-V label by interpolating between

the 0.3- and 0.4-V table entries current values which corresponds to the PCI VOH = 2.97 = 0.9 × GVDD_OVDD (GVDD_OVDD

= 3.3 V) where table entry voltage = GVDD_OVDD – PCI VOH.

2. For all others with GVDD_ OVDD = 3.3 V, IOH read from the IBIS listing in the pull-up mode, I(Min) column, at the 0.9-V table

entry which corresponds to the VOH = 2.4 V where table entry voltage = GVDD_OVDD – VOH.

3. For DRV_PCI, IOL read from the IBIS listing in the pull-down mode, I(Min) column, at 0.33 V = PCI VOL = 0.1 × GVDD_OVDD

(GVDD_OVDD = 3.3 V) by interpolating between the 0.3- and 0.4-V table entries.

4. For all others with GVDD_OVDD = 3.3 V, IOL read from the IBIS listing in the pull-down mode, I(Min) column, at the 0.4-V table

entry.

5. See driver bit details for output driver control register (0x73) in the MPC8245 Integrated Processor Reference Manual.

6. See Chip Errata No. 19 in the MPC8245/MPC8241 Integrated Processor Chip Errata.

Table 3. DC Electrical Specifications (continued)

Characteristics

Conditions

Symbol

Min

Max

Unit

Notes

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