Circuit: untitled Doing analysis at TEMP = 27.000000 and TNOM = 27.000000 Warning: singular matrix: check nodes p5_2 and p5_2 Note: Starting dynamic gmin stepping Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Warning: singular matrix: check nodes uq1_p$1 and uq1_p$1 Warning: Dynamic gmin stepping failed Note: Starting source stepping Warning: singular matrix: check nodes uq1_p$1 and uq1_p$1 Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful gmin step Note: One successful source step Warning: singular matrix: check nodes uq1_p$1 and uq1_p$1 Warning: singular matrix: check nodes uq1_p$1 and uq1_p$1 Warning: source stepping failed Transient solution failed - Last Node Voltages ------------------ Node Last Voltage Previous Iter ---- ------------ ------------- xu2.supply_ok 0.00198413 0 * xu2.outi -0.00396825 -0.5 * xu2.ref 0.00992063 0 * xu2.stage1 2.61739e-06 1.19557e-09 * xu2.rrps 0 0 xu2.rrpsdc 0 0 xu2.n002 0 0 xu2.stage2 2.61739e-06 0 * xu2.buffout 2.53793e-06 0 * xu2.isclim 1 1 xu2.a 2.53793e-06 1.96459e-17 * xu2.n001 -0.00396825 0 * xu2.k -0.00396825 -1.96459e-17 * xu2.outo -0.00396825 0 * xu2.n003 0 0 xu1.23 1.40842e-79 -2.35391e-92 xu1.10 2.88094e-88 -9.4474e-93 xu1.5 1.40842e-79 4.48883e-93 xu1.4 1.40842e-79 5.86796e-95 xu1.7 1.48769e-79 -1.76709e-92 xu1.6 6.89452e-88 -5.48826e-93 xu1.9 2.68561e-93 -1.40433e-101 xu1.8 3.37091e-86 -2.79763e-92 xu1.11 8.37497e-79 -4.23768e-91 xu1.13 2.43256e-86 -2.7973e-92 xu1.12 1.40842e-79 -2.31612e-92 xu1.15 1.41699e-86 -1.10468e-91 xu1.14 -8.55613e-90 -6.19237e-100 xu1.16 1.9389e-86 -7.54203e-92 xu1.17 1.13052e-78 1.08819e-91 xu1.18 4.1799e-79 -1.12292e-90 xu1.19 5.39826e-87 -1.39318e-92 xu1.20 1.74704e-77 1.9843e-89 xu1.21 1.74704e-77 5.82298e-91 xu1.22 -6.8475e-87 -5.82298e-90 xu1.24 1.74704e-77 2.84595e-90 xu1.25 -1.30139e-86 -5.82298e-90 xu1.26 3.65895e-93 4.33761e-99 xu1.27 1.13052e-78 -4.68959e-91 xu1.28 1.10363e-86 -5.82298e-91 xu1.29 1.65648e-88 -3.76808e-92 v1_+ 0 0 v1_- 0 0 r9_1 0 0 r8_1 0 0 r8_2 0 0 r6_2 0 0 r16_1 0 0 c7_2 0 0 c7_1 0 0 r19_2 0 0 r2_2 0 0 r15_1 0 0 r17_2 0 0 r15_2 0 0 r14_1 0 0 r12_2 -3.19781e-51 -2.01575e-50 volprobe1 1.18565e-43 7.07814e-50 plm324_5 1.18565e-43 0 p5_2 0 0 plm324_9 0 0 u3_1 0 0 d4_c -4.05094e-44 -4.10802e-50 d1_a -3.69562e-44 -9.54378e-51 u4_10 0 0 uq1_p$1 0 0 uq1_p$2 0 0 b.xu2.bpsrr1#branch 0 0 v.xu2.vbase1#branch 7.95021e-12 0 * v.xu2.vmon1#branch -0.496032 0 * v1#branch 0 0 doAnalyses: iteration limit reached tran simulation(s) aborted Error(parse.c--checkvalid): volprobe1: no such vector. ngspice-26 done can you fix my problem that i mentioned above..

@AMARES can you share your schematic?

![enter image description here][1] [1]: /editor/20160218/56c51df4288e4.PNG

@AMARES because EasyEDA can't be used to simulate a MCU schematic at present,

can you suggest me another software??

@AMARES Sorry, at present, we don't know any softwares which can be used for your design. Maybe the easy way is to make PCB and test on the real product.