參數(shù)資料
型號(hào)： MC7455ARX1000LF
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 32-BIT, 1000 MHz, RISC PROCESSOR, CBGA483
封裝： 29 X 29 MM, 1.27 MM PITCH, CERAMIC, BGA-483
文件頁(yè)數(shù)： 58/68頁(yè)
文件大?。?/td> 1609K
代理商： MC7455ARX1000LF
MOTOROLA
MPC7455 RISC Microprocessor Hardware Specifications
61
Document Revision History
2
Corrected entries in Table 17 for 33 MHz and 50 MHz bus frequencies with multipliers of 24x and higher.
Corrected typographical errors in heatsink selection example in Section 1.9.8.3.
Removed erroneous instances of PLL_EXT signal name and changed remaining instances of
PLL_CFG[0:3] to PLL_CFG[0:4]. (These were artifacts from older revisions; see entry for Rev 1.0.)
Corrected erroneous instances (artifacts) mentioning 1.6 V core voltage. Core voltage for devices
completely covered by this revision (and revisions 1.x) of this document is 1.3 V.
Corrected errors in PLL multipliers in Table 17: 32x and 25x are not supported ratios, 3x and 4x are
supported, 10.5x and 12.5x PLL settings were incorrect.
Replaced notes at bottom of Table 17 (erroneously missing in revisions 1.x).
Updated coplanarity specifications in Figures 20 and 21 from 0.2 mm to 0.15 mm.
3
Added Revision G (Rev 3.4) devices to specifications.
Added new PowerPC trademarking information.
4
Added substrate capacitor information in Sections 1.8.3 and 1.8.6.
Clarified maximum and typical L3 clock frequency in Section 1.5.2.3.; typical L3 frequency now stated
as 250 MHz based on changes to L3 AC timing.
Significantly changed L3 AC timing in Tables 12 and 13. These changes reflect both updates based on
latest characterization and error corrections (effects of non-zero L3OH values were incorrectly
documented in earlier revisions of this document).
Clarified address bus pull-up resistor recommendations in Section 1.9.6.
Added pull-up/pull-down recommendations for CKSTP_IN and PLL_CFG[0:4] to Section 1.9.6.
Modified Table 9, Figure 5, and Figure 6 to more accurately show when the mode select inputs
(BMODE[0:1], L3VSEL, BVSEL) are sampled and AC timing requirements.
Figures 20 and 22: Updated/corrected dimensions in mechanical drawings.
Table 20. Document Revision History (continued)
Rev. No.
Substantive Change(s)
F
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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