MPC755 RISC Microprocessor Hardware Specifications Addendum for the XPC7n5BxxnnnLD Series, Rev. 2.1

2

Freescale Semiconductor

General Parameters

Part numbers addressed in this document are listed in Table A. For more detailed ordering information see

Section 10, “Ordering Information.”

There are currently no known errata for the part numbers addressed by this data sheet.

3

General Parameters

The following general parameters apply to all part numbers described herein:

Core power supply

2.0 V ±100 mV DC (nominal; see Table 3 for recommended operating

conditions)

I/O power supply

1.8 V ±100 mV dc (processor bus interface only; not supported on

L2 interface), or

2.0 V ±100 mV dc (processor bus interface only; not supported on

L2 interface), or

3.3 V ±165 mV dc (input thresholds are configuration pin selectable)

Note that part revisions prior to Rev. 2.8 (Rev. E) do not support core voltages down to 1.8 V.

4.1

DC Electrical Characteristics

All part numbers affected by this specification support 3.3 V and 1.8 V/2.0 V I/O voltages, but do not

support 2.5 V I/O voltages. Table 2 describes the input threshold voltage settings. These settings apply to

Table A. Significant Differences from Hardware Specifications by Part Number

Freescale

Part Number

Operating Conditions

Significant Differences from

Hardware Specification

CPU

Frequency

(MHz)

(°C)

XPC755BRX300LD

300

2.0 V ±100 mV

0 to 105

2.0 V/1.8 V I/O voltage supported, 2.5 V I/O not

supported; all nominal core voltages are 2.0 V

±100 mV; AC timing different for processor bus and

L2 bus interfaces; L2 bus interface AC timing not

guaranteed in 1.8 V/2.0 V mode.

XPC755BRX350LD

350

XPC755BRX400LD

400

XPC755BPX300LD

300

XPC755BPX350LD

350

XPC755BPX400LD

400

XPC745BPX300LD

300

2.0 V/1.8 V I/O voltage supported, 2.5 V I/O not

supported; all nominal core voltages are 2.0 V

±100 mV; AC timing different for processor bus

interface.

XPC745BPX350LD

350

Note: The X prefix in a Freescale part number designates a “Pilot Production Prototype” as defined by Freescale SOP 3-13.

These are from a limited production volume of prototypes manufactured, tested, and Q.A. inspected on a qualified technology

to simulate normal production. These parts have only preliminary reliability and characterization data. Before pilot production

prototypes may be shipped, written authorization from the customer must be on file in the applicable sales office acknowledging

the qualification status and the fact that product changes may still occur while shipping pilot production prototypes.