80960JD datasheet(34/78 Pages) INTEL

34 / 78 page

80960JA/JF/JD/JT 3.3 V Microprocessor

Advance Information Datasheet

3.2

Package Thermal Specifications

The 80960Jx is specified for operation when TC (case temperature) is within the range of 0°C to

100°C for PGA, MPBGA and PQFP packages. An extended temperature device is also available in

a PQFP package with TC -40°C to 100°C. Case temperature may be measured in any environment

to determine whether the 80960Jx is within its specified operating range. The case temperature

should be measured at the center of the top surface, opposite the pins.

CA is the thermal resistance from case to ambient. Use the following equation to calculate TA, the

maximum ambient temperature to conform to a particular case temperature:

TA = TC - P (θCA)

Junction temperature (TJ) is commonly used in reliability calculations. TJ can be calculated from

JC (thermal resistance from junction to case) using the following equation:

TJ = TC + P (θJC)

Similarly, if TA is known, the corresponding case temperature (TC) can be calculated as follows:

TC = TA + P (θCA)

Compute P by multiplying ICC from Table 22 and VCC. Values for θJC and θCA are given in

Table 12 for the PGA package, Table 13 for the MPBGA package, and Table 14 for the PQFP

package. For high speed operation, the processor’s

JA may be significantly reduced by adding a

heatsink and/or by increasing airflow.

Tables 15, 16, and 17 show the maximum ambient temperature (TA) permitted without exceeding

TC for the PGA, MPBGA, and PQFP packages. The values are based on typical ICC and VCC of

+3.3 V, with a TCASE of +100°C.

L13

M10

XINT2

TDO

VCC

L14

RDYRCV

M11

XINT0

WIDTH0

DT/R

M12

TMS

XINT4

WIDTH1

VCC

M13

TRST

N10

FAIL

M14

TCK

N11

XINT6

W/R

N12

XINT1

D/C

N13

XINT3

P10

NMI

VCC

N14

HOLD

P11

XINT7

ALE

P12

XINT5

VCC5

ADS

P13

VCC

BLAST

P14

Table 11.

196-Ball MPBGA Pinout — In Pin Order (Sheet 2 of 2)

Signal

NOTE: Do not connect any external logic to pins marked NC (no connect pins).

80960JD Datasheet(PDF) 34 Page - Intel Corporation

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