* 555 Astable Multivibrator - from the FOSSEE eSim examples (Astable555), GPL-3.0
* https://github.com/FOSSEE/eSim/tree/master/Examples/Astable555
* Model files from the project folder are inlined below. Run: ngspice esim-astable555.cir
* /home/ash98/esim-workspace/555/555.cir

* ---- begin lm555n.sub ----
* Subcircuit lm555n
.subckt lm555n 22 14 7 6 15 16 3 13
* ---- begin npn_1.lib ----
.model npn_1 NPN(
+ Vtf=1.7 
+ Cjc=0.5p
+ Nc=2 
+ Tr=46.91n 
+ Ne=1.307 
+ Cje=0.5p
+ Isc=0 
+ Xtb=1.5 
+ Rb=500
+ Rc=1 
+ Tf=411.1p 
+ Xti=3 
+ Ikr=0 
+ Bf=125
+ Fc=.5 
+ Ise=14.34f 
+ Br=6.092 
+ Ikf=.2847 
+ Mje=.377 
+ Mjc=.3416 
+ Vaf=74.03 
+ Vjc=.75 
+ Vje=.75 
+ Xtf=3 
+ Itf=.6 
+ Is=14.34f 
+ Eg=1.11 
)
* ---- end npn_1.lib ----
* eeschema netlist version 1.1 (spice format) creation date: monday 17 december 2012 11:00:36 am ist
* Inverter d_inverter
* SR Latch d_srlatch
e2  18 0 23 14 10000
* Limiter limit8
* Digital to Analog converter dac8
* Analog to Digital converter adc8
r8  9 2 1500
q1 3 2 22 npn_1
r7  18 20 25
r6  17 19 25
e1  17 0 16 15 10000
r4  16 15 2e6
r5  23 14 2e6
r3  23 22 5000
r2  15 23 5000
r1  13 15 5000
a1 5 21 u5
.model u5 d_inverter(rise_delay=1e-12 fall_delay=1e-12 input_load=1e-12)
a2 1 4 5 21 21 8 10 u6
.model u6 d_srlatch(rise_delay=1e-12 fall_delay=1e-12 ic=0
+sr_load=1e-12 enable_load=1e-12 set_load=1e-12 reset_load=1e-12
+sr_delay=1e-12 enable_delay=1e-12 set_delay=1e-12 reset_delay=1e-12)
a3 19 11 u4
a4 20 12 u4
.model u4 limit(out_lower_limit=0.0 out_upper_limit=5.0 in_offset=0.0 gain=1.0)
a5 [8] [7] u3
a6 [10] [9] u3
.model u3 dac_bridge(out_low=0.2 out_high=5.0 out_undef=5.0 )
a7 [11] [4] u2
a8 [12] [1] u2
a9 [6] [5] u2
.model u2 adc_bridge(in_low=0.8 in_high=2.0 )
*control statements

.ends lm555n
* ---- end lm555n.sub ----
r3  v_out gnd 1k
r1  net-_r1-pad1_ net-_r1-pad2_ 1k
r2  net-_r1-pad2_ c_out 10k
v1 net-_r1-pad1_ gnd  dc 10
c1  c_out gnd 0.1u
c2  net-_c2-pad1_ gnd 0.01u
* u2  v_out plot_v1
* u1  c_out plot_v1
x1 gnd c_out v_out net-_r1-pad1_ net-_c2-pad1_ c_out net-_r1-pad2_ net-_r1-pad1_ lm555n
.tran 1e-03 50e-03 0e-00 uic
* eetree.cn: 'uic' added so the transient converges in current ngspice

* Control Statements 
.control
option noopalter
run
print allv > plot_data_v.txt
print alli > plot_data_i.txt
plot v(v_out)
plot v(c_out)
.endc
.end