MPC7457ECS01AD NXP
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© Freescale Semiconductor, Inc., 2005. All rights reserved. This document describes part-number-specific changes to recommended operating conditions and revised electrical specifications, as applicable, from those described in the general MPC7457 RISC Microprocessor Hardware Specifications (Order No. MPC7457EC). The MPC7457 and MPC7447 are implementations of the PowerPC™ microprocessor family of reduced instruction set computer (RISC) microprocessors. Specifications provided in this document supersede those in the MPC7457 RISC Microprocessor Hardware Specifications, Rev. 5 or later, for the part numbers listed in Table A only. Specifications not addressed herein are unchanged. Because this document is frequently updated, refer to http://www.freescale.com or to your Freescale sales office for the latest version. Note that headings and table numbers in this document are not consecutively numbered. They are intended to correspond to the heading or table affected in the general hardware specification. MPC7457ECS01AD Rev. 3, 01/2005 Freescale Part Numbers Affected: MC7447RX1000NB MC7447RX867NB MC7447RX733NB MC7447RX600NB MC7457RX1000NC MC7457RX867NC MC7457RX733NC MC7457RX600NC MPC7457 Hardware Specification Addendum for the MPC74n7RXnnnnNx Series
MPC7457 Hardware Specification Addendum for the MPC74n7RXnnnnNx Series, Rev. 3
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Features
Part numbers addressed in this document are listed in Table A.
2 Features
This section summarizes changes to the features of the MPC7457 described in the MPC7457 RISC Microprocessor Hardware Specifications. Power management — 1.1-V processor core
3 General Parameters
Core power supply: 1.1 V ± 50 mV DC nominal
5.1 DC Electrical Characteristics
Table 4 provides the recommended operating conditions for the MPC7457 part numbers described herein. Table A. Part Numbers Addressed by this Data Sheet Freescale Part Number Operating Conditions Significant Differences from Hardware SpecificationCPU Frequency (MHz) VDD Tj (°C) MC7447RX1000NB 1000 1.1 V ± 50 mV 0 to 105 Modified core frequency and voltage to reduce power consumption, modified processor bus AC timing.MC7457RX1000NC MC7447RX867NB 867 MC7457RX867NC MC7447RX733NB 733 MC7457RX733NC MC7447RX600NB 600 MC7457RX600NC Table 4. Recommended Operating Conditions 1
- These are the recommended and tested operating conditions. Proper device operation outside of these conditions is not
- This voltage is the input to the filter discussed in MPC7457 RISC Microprocessor Hardware Specifications, Section 9.2, “PLL
Power Supply Filtering,” and not necessarily the voltage at the AV DD pin, which may be reduced from V DD by the filter.
Table 7 provides the power consumption for the MPC7457 part numbers described herein. Table 7. Power Consumption for MPC7457
600 MHz 733 MHz 867 MHz 1000 MHz
- These values apply for all valid processor bus and L3 bus ratios. The values do not include I/O supply power (OV DD
power. Worst case power consumption for AVDD < 3 mW.
- Maximum power is the maximum measured at nominal VDD and maximum operating junction temperature (see Ta bl e 4)
- T ypical power is an average value measured at the nominal recommended V
the Dhrystone 2.1 benchmark and achieving 2.3 Dhrystone MIPs/MHz.
- Doze mode is not a user-definable state; it is an intermediate state between full-power and either nap or sleep mode.
As a result, power consumption for this mode is not tested.
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Table 8 provides the clock AC timing specifications for the MPC7457 part numbers described herein.
5.2.2 Processor Bus AC Specifications
Table 9 provides the processor bus AC timing specifications for the MPC7457 part numbers described herein. Table 8. Clock AC Timing Specifications At recommended operating conditions. See Table 4.
- Caution: The SYSCLK frequency and PLL_CFG[0:4] settings must be chosen such that the resulting SYSCLK
Hardware Specifications, Section 1.9.1, “PLL Configuration,” for valid PLL_CFG[0:4] settings.
- Assumes lightly-loaded, single-processor system; see MPC7457 RISC Microprocessor Hardware Specifications ,
Section 5.2.1, “Clock AC Specifications” for more information. Table 9. Processor Bus AC Timing Specifications 1 At recommended operating conditions. See Table 4.
- All input specifications are measured from the midpoint of the signal in question to the midpoint of the rising edge of the input
time-of-flight delays must be added for trace lengths, vias, and connectors in the system.
- The symbology used for timing specifications herein follows the pattern of t (signal)(state)(reference)(state) for inputs and
output hold time can be read as the time from the rising edge (KH) until the output went invalid (OX).
- tsysclk is the period of the external clock (SYSCLK) in ns. The numbers given in the table must be multiplied by the period of
SYSCLK to compute the actual time duration (in ns) of the parameter in question.
- According to the bus protocol, TS is driven only by the currently active bus master. It is asserted low then precharged high
behavior is guaranteed by design.
- Guaranteed by design and not tested.
- According to the bus protocol, ARTRY can be driven by multiple bus masters through the clock period immediately following
the signal asserted.The high-impedance behavior is guaranteed by design.
- According to the MPX bus protocol, SHD0 and SHD1 can be driven by multiple bus masters beginning the cycle of TS. Timing
tSYSCLK. The edges of the precharge vary depending on the programmed ratio of core to bus (PLL configurations).
- BMODE[0:1] and BVSEL are mode select inputs and are sampled before and after HRESET negation. These parameters
inputs must remain stable after the second sample. Table 9. Processor Bus AC Timing Specifications 1 (continued) At recommended operating conditions. See Table 4.
MPC7457 Hardware Specification Addendum for the MPC74n7RXnnnnNx Series, Rev. 3
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Ordering Information
5.2.3 L3 Clock AC Specifications
The MPC7457 devices described by this part number specification conform to the L3 clock AC timing specifications provided in the MPC7457 RISC Microprocessor Hardware Specifications . Refer to the hardware specifications for additional information.
5.2.4 L3 Bus AC Specifications
The MPC7457 devices described by this part number specification conform to the L3 clock AC timing specifications provided in the MPC7457 RISC Microprocessor Hardware Specifications . Refer to the hardware specifications for additional information.
11.1 Part Numbers Addressed by This Specification
Table 22 provides the ordering information for the MPC7457 parts described in this document. Table 22. Part Marking Nomenclature
- Processor core frequencies supported by parts addressed by this specification only. Parts addressed by other
specifications may support other maximum core frequencies.
MPC7457 Hardware Specification Addendum for the MPC74n7RXnnnnNx Series, Rev. 3 Freescale Semiconductor 7
11.3 Part Marking
Parts are marked as the example shown in Figure 29. Figure 29. Freescale Part Marking for BGA Devices CCCCC is the country of assembly. This space is left blank if parts are assembled in the United States. MMMMMM is the 6-digit mask number. ATWL YYWWA is the traceability code.
MPC7457 Hardware Specification Addendum for the MPC74n7RXnnnnNx Series, Rev. 3
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Table B provides a revision history for this hardware specification addendum. Table B. Document Revision History Rev. No. Date Substantive Change(s) 3 1/27/2005 Corrected numerous errors in lists of pins associated with t KHOV, tKHOX, tIVKH, and tIXKH in Ta ble 9 Removed PPC devices; added Rev 1.2 (Rev C) devices: MC7457RX1000NC MC7457RX867NC MC7457RX733NC MC7457RX600NC Changed name of document from MPC7457 Part Number Specification for the MPC74x7RXnnnnNx Series to MPC7457 Hardware Specification Addendum for the MPC74n7RXnnnnNx Series. Previous document order number was MPC7457RXNXPNS. 2 — Added “MC7447...” part numbers to reflect qualification status. Table 8: Increased maximum system bus frequency (f SYSCLK) to 167 MHz. Table 9: Corrected numerous errors in lists of pins associated with t KHOV, tKHOX, tIVKH, and tIXKH. Updated (improved) AC timing parameters based on latest characterization data. Added 867, 733, and 600 MHz speed grades. Removed Tables 10, 13, and 14: devices described by this specification conform to the AC timing found in the MPC7457 RISC Microprocessor Hardware Specifications . Corrected typo in Figure 29: 7447 device was incorrectly marked...RX10000NB. 1 — Corrected product code in part numbers on page 1 and in Ta bl e A. Updated power consumption specifications in Ta bl e 7. Corrected product code in Section 1.11 and T able 21. 0.1 — Edited introductory paragraphs to clarify which part numbers are affected by this specification. 0 — Initial release.
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