# # Didsco-Kraken Components File # ----------------==========------- # # # Startup and Reset Comps # ----------------------=====-- # # # Original Rev. 14-Dec-2023 # Most Recent Rev. 21-Dec-2023 # # # This file holds the Components for: # # STARTUP and RESET Comps # --------------------------------- # # # These comps are in the range 1151 : 1199 # UNITS MM # # Board_Location # Ref Part_Number Symbol Geometry X Y Properties #----- ----------- ------ ------------------ -------------- ---------- # U1151 TPS3808 SY_JUNK SOT_23_6 228.0 194.0 2 0 U1152 TPS3808 SY_JUNK SOT_23_6 228.0 187.0 2 0 U1153 74LVC08A SY_JUNK soic_14 218.0 180.5 2 0 U1154 74LVC08A SY_JUNK soic_14 206.0 180.5 2 0 U1155 74LVC07A SY_JUNK soic_14 194.0 180.5 2 0 U1156 TPS3808 SY_JUNK SOT_23_6 228.0 180.0 2 0 # # Rs and Cs associated with the TPS3803s: # ------------------------------------------- # R1161 Res_100k_Ohm_0603 SY_JUNK Res_0603 218.0 193.0 2 0 # --> 4.46 V Thrsh R1162 Res_10.0k_Ohm_0603 SY_JUNK Res_0603 218.0 191.0 2 0 # --> 40.5 uAmp Sence C1161 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 218.0 189.0 2 0 C1162 Cap_220_nFd_25_V_0603 SY_JUNK Cap_0603 218.0 187.0 2 0 # --> 1.2 sec Delay R1163 Res_62.8k_Ohm_0603 SY_JUNK Res_0603 214.0 193.0 2 0 # --> 2.95 V Thrsh R1164 Res_10.0k_Ohm_0603 SY_JUNK Res_0603 214.0 191.0 2 0 # --> 40.5 uAmp Sense C1163 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 214.0 189.0 2 0 C1164 Cap_220_nFd_25_V_0603 SY_JUNK Cap_0603 214.0 187.0 2 0 # --> 1.2 sec Delay R1165 Res_30.1k_Ohm_0603 SY_JUNK Res_0603 233.0 183.0 2 0 # --> 1.62 V Thrsh R1166 Res_10.0k_Ohm_0603 SY_JUNK Res_0603 233.0 181.0 2 0 # --> 40.5 uAmp Sense C1165 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 233.0 179.0 2 0 # No Timing Cap --> 20 msec # # NOTE: that R1161 = 100k Ohm implines a threshold of # 4.455 V i.e. 89.1 % of the BULK_5V0 supply, # is that too tight ?? # # NOTE: that R1163 = 62.8k Ohm implines a threshold of # 2.948 V i.e. 89.3 % of the BULK_3V3 supply, # is that too tight ?? # # NOTE: that R1165 = 30.1k Ohm implines a threshold of # 1.624 V i.e. middle of the CMOS 3V3 Logic Hi/Low # # # Pull-Up Resistors: # -------------------- # R1171 Res_4.7k_Ohm_0603 SY_JUNK Res_0603 186.5 183.0 2 0 R1172 Res_4.7k_Ohm_0603 SY_JUNK Res_0603 186.5 180.5 2 0 R1173 Res_4.7k_Ohm_0603 SY_JUNK Res_0603 186.5 178.0 2 0 R1174 Res_4.7k_Ohm_0603 SY_JUNK Res_0603 186.5 175.5 2 0 R1175 Res_4.7k_Ohm_0603 SY_JUNK Res_0603 214.0 173.5 2 0 R1176 Res_4.7k_Ohm_0603 SY_JUNK Res_0603 210.0 173.5 2 0 R1177 Res_10.0k_Ohm_0603 SY_JUNK Res_0603 202.0 173.5 2 0 # # Pull-Down Resistor on the DK_CPU_Is_Sane signal: # ------------------------------------------------------ # # # Note: this risistor is not needed for 99% of the Startup # circuits where the CNST_3V3 supply guarantees # that the DK_CPU_Is_Sane signal is well defined # before any of the BULK_ supplies, 3V3 or lower, # begin their ramp up - but the use of this resistor # guarantees that the DK_CPU_Is_Sane signal is # defined when the BULK_5V0 ramps up so that the # Barnacle_Master_Reset_B will be defined as the # BULK_5V0 ramps up. # R1178 Res_4.7k_Ohm_0603 SY_JUNK Res_0603 198.0 173.5 2 0 # # Bypass Capacitors for each of the 6 ICs: # ------------------------------------------ C1151 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 222.0 192.0 2 0 C1152 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 222.0 189.5 2 0 C1153 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 218.0 173.5 2 0 C1154 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 206.0 173.5 2 0 C1155 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 194.0 173.5 2 0 C1156 Cap_100_nFd_25_V_0603 SY_JUNK Cap_0603 222.0 187.0 2 0