MC7457RX1267LC Datasheet, PDF (65/71 Pages) Freescale Semiconductor, Inc – Microprocessor

Part Numbering and Marking
Conductivity
Value
Bump and Underfill
k_x
0.6
k_y
0.6
k_z
2
Substrate
k
18
Solder Ball and Air
k_x
0.034
k_y
0.034
k_z
3.8
Unit
W/(m • K)
Die
z
Bump and Underfill
Substrate
Solder and Air
Side View of Model (Not to Scale)
x
Substrate
Die
y
Top View of Model (Not to Scale)
Figure 30. Recommended Thermal Model of MPC7447 and MPC7457
10 Part Numbering and Marking
Ordering information for the parts fully covered by this specification document is provided in
Section 10.1, “Part Numbers Fully Addressed by This Document.” Note that the individual part numbers
correspond to a maximum processor core frequency. For available frequencies, contact your local
Freescale sales office. In addition to the processor frequency, the part numbering scheme also includes an
application modifier which may specify special application conditions. Each part number also contains a
revision level code which refers to the die mask revision number. Section 10.2, “Part Numbers Not Fully
Addressed by This Document,” lists the part numbers which do not fully conform to the specifications of
this document. These special part numbers require an additional document called a referred to as a
hardware specification addendum.
10.1 Part Numbers Fully Addressed by This Document
Table 22 provides the Freescale part numbering nomenclature for the MPC7457.
MPC7457 RISC Microprocessor Hardware Specifications, Rev. 8
Freescale Semiconductor
65