80960JA Datasheet, PDF (34/77 Pages) Intel Corporation – EMBEDDED 32-BIT MICROPROCESSOR

80960JA/JF/JD/JT 3.3 V Microprocessor
Table 11.
196-Ball MPBGA Pinout — In Pin Order (Sheet 2 of 2)
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
L13
NC
M10
XINT2
N7
L14
RDYRCV
M11
XINT0
N8
TDO
NC
P4
V_CC
P5
WIDTH0
M1
DT/R
M12
TMS
N9
XINT4
P6
WIDTH1
M2
V_CC
M13
TRST
N10
NC
P7
FAIL
M3
NC
M14
TCK
N11
XINT6
P8
NC
M4
NC
N1
W/R
N12
XINT1
P9
NC
M5
A3
N2
D/C
N13
XINT3
P10
NMI
M6
V_CC
N3
M7
ALE
N4
NC
N14
HOLD
P11
XINT7
NC
P1
NC
P12
XINT5
M8
VCC5
N5
A2
P2
ADS
P13
V_CC
M9
V_CC
N6
V_CC
P3
BLAST
P14
NC
NOTE: Do not connect any external logic to pins marked NC (no connect pins).
3.2
Package Thermal Specifications
The 80960Jx is specified for operation when T_C (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 T_C -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.
θ_CA is the thermal resistance from case to ambient. Use the following equation to calculate T_A, the
maximum ambient temperature to conform to a particular case temperature:
T_A = T_C - P (θ_CA)
Junction temperature (T_J) is commonly used in reliability calculations. T_J can be calculated from
θ_JC (thermal resistance from junction to case) using the following equation:
T_J = T_C + P (θ_JC)
Similarly, if T_A is known, the corresponding case temperature (T_C) can be calculated as follows:
T_C = T_A + P (θ_CA)
Compute P by multiplying I_CC from Table 22 and V_CC. Values for θ_JC and θ_CA 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 θ_JA may be significantly reduced by adding a
heatsink and/or by increasing airflow.
Tables 15, 16, and 17 show the maximum ambient temperature (T_A) permitted without exceeding
T_C for the PGA, MPBGA, and PQFP packages. The values are based on typical I_CC and V_CC of
+3.3 V, with a T_CASE of +100°C.
34
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