SPC5644AF0MLU2 datasheet(86/138 Pages) FREESCALE

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MPC5644A Microcontroller Data Sheet, Rev. 7

Freescale Semiconductor

3.9.1

I/O pad VRC33 current specifications

The power consumption of the VRC33 supply is dependent on the usage of the pins on all I/O segments. The power consumption

is the sum of all input and output pin VRC33 currents for all I/O segments. The output pin VRC33 current can be calculated from

Table 23 based on the voltage, frequency, and load on all fast pad pins. The input pin VRC33 current can be calculated from

Table 23 based on the voltage, frequency, and load on all medium-speed pads. Use linear scaling to calculate pin currents for

voltage, frequency, and load parameters that fall outside the values given in Table 23.

Table 23. I/O pad VRC33 average IDDE specifications1

1 These are typical values that are estimated from simulation and not tested. Currents apply to output pins only.

Pad Type

Symbol

Period

(ns)

Load2

(pF)

2 All loads are lumped.

Drive Select

IDD33 Avg

(µA)

IDD33 RMS

(µA)

Slow

IDRV_SSR_HV

100

0.8

235.7

200

0.04

87.4

800

0.06

47.4

800

200

0.009

Medium

IDRV_MSR_HV

2.75

258

100

0.11

76.5

500

0.02

56.2

500

200

0.01

56.2

MultiV3 (High

Swing Mode)

3 Average current is for pad configured as output only.

IDRV_MULTV_HV

33.4

35.4

33.4

34.8

117

33.4

33.8

212

200

33.4

33.7

MultiV4 (Low

Swing Mode)

4 In low swing mode, multi-voltage pads must operate in highest slew rate setting.

IDRV_MULTV_HV

33.4

34.9

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