MPC5645S datasheet(27/146 Pages) FREESCALE

Part #	MPC5645S

Description	Qorivva MPC5645S Microcontroller Data Sheet

PDF	146 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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27 / 146 page

Qorivva MPC5645S Microcontroller Data Sheet, Rev. 8

Freescale Semiconductor

2.4

Signal description

The following sections provide signal descriptions and related information about the signals’ functionality and configuration.

2.4.1

Pad configuration during reset phases

All pads have a fixed configuration under reset.

During the power-up phase, all pads are forced to tristate.

After power-up phase, all pads are floating with the following exceptions:

•

PB[5] (FAB) is pull-down. Without external strong pull-up the device starts fetching from flash memory.

•

RESET pad is driven low. This is released only after PHASE2 reset completion.

•Fast (4-16 MHz) external oscillator pads (EXTAL, XTAL) are tristate.

•

The following pads are pull-up:

—PB[6]

—PH[0]

—PH[1]

—PH[3]

2.4.2

Voltage supply pins

Voltage supply pins are used to provide power to the device. Two dedicated pins are used for 1.2 V regulator stabilization.

MPC5645S Datasheet(PDF) 27 Page - Freescale Semiconductor, Inc