Reference guide

MOTOROLA MC68LC302 REFERENCE MANUAL ERRATA 2
Section 6- Electrical Characteristics
1. Thermal Characteristic Values (ø
ja
, ø
jc
)
In section 6.2 in the thermal characteristic table, the value for ø
ja
should read 52.8, replacing
TBD; also, the value for ø
jc
should read 10.4, replacing TBD.
2. Junction Temperature (Tj) Equation
In section 6.2, the junction temperature equation should read:
Tj = 70C + (5.25V*50mA*52.8C/W) = 83.9C.
3. AC Electrical Specification Changes at 3.3V
In section 6.8 in the AC Electrical Specification Table, all information is for 5.0V only. The
only value which changes at 3.3V is Spec 47, the Asynchronous Input Setup Time (t
ASI
).
This value should be 12ns, instead of 10ns, at both 16.67 and 20MHz. 25MHz is not sup-
ported at 3.3V.
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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