320C3x, 320C4x, and 320MCM42x Power-Up Sensitivity at Cold Temperatures (Rev. D)

System board-level design and end-equipment environments can impact the operation of specific commercial and military 320C3x (320C30, 320C31, 320LC31, 320C32, and 320VC33), 320C4x (320C40 and 320C44) digital signal processors (DSPs), and the military 320MCM42x (320MCM42C and 320MCM42D) multichip modules (MCMs) during power up. The 320MCM42x MCM incorporates two 320C40 DSP die. Specifically, the subject DSPs and MCMs may randomly exhibit application sensitivity during power up when exposed to temperatures near the lower end of the device recommended operating conditions (ROCs), as specified in the applicable device data sheets and DSCC standard microcircuit drawings (SMDs). Also, information covering the 320C4x design change and the 320VC33 circuit design, which addresses the application sensitivity, is included in this application report.