MPC7457EC Ver la hoja de datos (PDF) - Freescale Semiconductor
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MPC7457EC Datasheet PDF : 71 Pages
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Electrical and Thermal Characteristics
Table 5. Package Thermal Characteristics 1 (continued)
Characteristic
Value
Symbol
Unit Notes
MPC7447 MPC7457
Coefficient of thermal expansion
6.8
6.8
ppm/°C
Notes:
1. Refer to Section 9.8, “Thermal Management Information,” for more details about thermal management.
2. Junction temperature is a function of on-chip power dissipation, package thermal resistance, mounting site (board)
temperature, ambient temperature, airflow, power dissipation of other components on the board, and board thermal
resistance.
3. Per SEMI G38-87 and JEDEC JESD51-2 with the single-layer board horizontal.
4. Per JEDEC JESD51-6 with the board horizontal.
5. Thermal resistance between the die and the printed-circuit board per JEDEC JESD51-8. Board temperature is measured on
the top surface of the board near the package.
6. Thermal resistance between the die and the case top surface as measured by the cold plate method (MIL SPEC-883 Method
1012.1) with the calculated case temperature. The actual value of RθJC for the part is less than 0.1°C/W.
Table 6 provides the DC electrical characteristics for the MPC7457.
Table 6. DC Electrical Specifications
At recommended operating conditions. See Table 4.
Nominal
Characteristic
Bus Symbol
Min
Max
Voltage 1
Input high voltage
1.5
(all inputs including SYSCLK)
1.8
2.5
Input low voltage
1.5
(all inputs including SYSCLK)
1.8
2.5
Input leakage current, Vin = GVDD/OVDD
—
High-impedance (off-state) leakage
—
current, Vin = GVDD/OVDD
Output high voltage, IOH = –5 mA
1.5
1.8
2.5
Output low voltage, IOL = 5 mA
1.5
1.8
2.5
VIH
GVDD × 0.65
GVDD + 0.3
OVDD/GVDD × 0.65 OVDD/GVDD + 0.3
1.7
OVDD/GVDD + 0.3
VIL
–0.3
GVDD × 0.35
–0.3
OVDD/GVDD × 0.35
–0.3
0.7
Iin
—
30
ITSI
—
30
VOH OVDD/GVDD – 0.45
OVDD/GVDD – 0.45
1.8
VOL
—
—
—
—
—
—
0.45
0.45
0.6
Unit
V
V
V
V
V
V
µA
µA
V
V
V
V
V
V
Notes
2
2, 6
2, 3
2, 3, 4
6
6
MPC7457 RISC Microprocessor Hardware Specifications, Rev. 8
Freescale Semiconductor
15
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