* SPICE netlist
M1 N001 sense_N 0 0 N_50n l=50n w=500n
Veq Eq 0 PULSE 0 1 5n 0 0 4n
VDD VDD 0 1
VDDby2 VDDby2 0 500mV
Vsn sense_N 0 PULSE 0 1 15n
M2 bitline1 bitline0 N001 0 N_50n l=50n w=500n
M3 bitline0 bitline1 N001 0 N_50n l=50n w=500n
M4 bitline1 Eq bitline0 0 N_50n l=50n w=500n
M5 bitline0 Eq VDDby2 0 N_50n l=50n w=500n
M6 VDDby2 Eq bitline1 0 N_50n l=50n w=500n
Ccol1 bitline1 0 100f
Ccol0 bitline0 0 100f
M7 bitline0 ra0 mb0 0 N_50n l=50n w=500n
Cmbit0 mb0 0 20f
M8 bitline1 ra1 mb1 0 N_50n l=50n w=500n
Cmbit1 mb1 0 20f
Vra0 ra0 0 PULSE 0 1.5 12n
Vsn1 ra1 0 0
.ic v(bitline0)=250m v(bitline1)=750m v(mb0)=0
.tran 20n uic

* LTspice schematic (.asc)
Version 4
SHEET 1 1568 1328
WIRE -784 -216 -784 -248
WIRE -784 -104 -784 -136
WIRE -768 88 -768 72
WIRE -768 184 -768 168
WIRE -656 -216 -656 -248
WIRE -656 -104 -656 -136
WIRE -576 104 -576 72
WIRE -576 216 -576 184
WIRE -480 -216 -480 -248
WIRE -480 -104 -480 -136
WIRE -384 88 -384 72
WIRE -384 184 -384 168
WIRE -224 -472 -432 -472
WIRE -160 -472 -224 -472
WIRE -160 -472 -160 -504
WIRE -128 -88 -160 -88
WIRE -112 -584 -112 -616
WIRE -112 -440 -112 -488
WIRE -112 -424 -112 -440
WIRE -112 328 -160 328
WIRE 0 -616 -112 -616
WIRE 0 -616 0 -664
WIRE 0 -136 0 -616
WIRE 0 -40 0 -136
WIRE 0 -24 0 -40
WIRE 0 24 -80 24
WIRE 0 24 0 -24
WIRE 0 72 0 24
WIRE 0 88 0 72
WIRE 0 232 0 184
WIRE 32 -24 0 -24
WIRE 80 168 48 168
WIRE 96 72 0 72
WIRE 112 -88 -128 -88
WIRE 112 -72 112 -88
WIRE 144 -136 0 -136
WIRE 144 328 -112 328
WIRE 160 -88 112 -88
WIRE 176 -24 128 -24
WIRE 176 24 176 -24
WIRE 176 40 176 24
WIRE 192 232 0 232
WIRE 192 248 192 232
WIRE 208 -24 176 -24
WIRE 240 -472 -160 -472
WIRE 240 152 96 72
WIRE 272 72 80 168
WIRE 272 168 240 152
WIRE 288 -88 160 -88
WIRE 288 -72 288 -88
WIRE 304 168 272 168
WIRE 320 504 112 504
WIRE 352 -136 240 -136
WIRE 352 -136 352 -200
WIRE 352 -24 304 -24
WIRE 352 -24 352 -136
WIRE 352 -8 352 -24
WIRE 352 24 352 -8
WIRE 352 72 272 72
WIRE 352 72 352 24
WIRE 352 88 352 72
WIRE 352 232 192 232
WIRE 352 232 352 184
WIRE 384 504 320 504
WIRE 384 504 384 472
WIRE 432 24 352 24
WIRE 432 392 432 360
WIRE 432 536 432 488
WIRE 432 552 432 536
WIRE 528 -88 288 -88
WIRE 544 -200 352 -200
WIRE 544 360 432 360
WIRE 544 360 544 -200
WIRE 544 664 544 360
WIRE 784 504 384 504
FLAG -768 184 0
FLAG -768 72 Eq
FLAG 192 296 0
FLAG -784 -104 0
FLAG -784 -248 VDD
FLAG -656 -104 0
FLAG -656 -248 VDDby2
FLAG -576 216 0
FLAG -576 72 sense_N
FLAG 352 136 0
FLAG 0 136 0
FLAG 192 -136 0
FLAG 80 -24 0
FLAG 256 -24 0
FLAG -128 -88 Eq
FLAG 176 24 VDDby2
FLAG -112 328 sense_N
FLAG 192 344 0
FLAG 432 88 0
FLAG -80 88 0
FLAG 0 -40 bitline0
FLAG 352 -8 bitline1
FLAG -112 -536 0
FLAG -112 -360 0
FLAG -112 -440 mb0
FLAG -224 -472 ra0
FLAG 432 440 0
FLAG 432 616 0
FLAG 432 536 mb1
FLAG 320 504 ra1
FLAG -384 184 0
FLAG -384 72 ra0
FLAG -480 -104 0
FLAG -480 -248 ra1
SYMBOL nmos4 144 248 R0
SYMATTR InstName M1
SYMATTR Value N_50n
SYMATTR Value2 l=50n w=500n
SYMBOL voltage -768 72 R0
SYMATTR InstName Veq
SYMATTR Value PULSE 0 1 5n 0 0 4n
SYMBOL voltage -784 -232 R0
SYMATTR Value 1
SYMATTR InstName VDD
SYMBOL voltage -656 -232 R0
SYMATTR Value 500mV
SYMATTR InstName VDDby2
SYMBOL voltage -576 88 R0
SYMATTR Value PULSE 0 1 15n
SYMATTR InstName Vsn
SYMBOL nmos4 304 88 R0
SYMATTR InstName M2
SYMATTR Value N_50n
SYMATTR Value2 l=50n w=500n
SYMBOL nmos4 48 88 M0
SYMATTR InstName M3
SYMATTR Value N_50n
SYMATTR Value2 l=50n w=500n
SYMBOL nmos4 240 -88 M270
SYMATTR InstName M4
SYMATTR Value N_50n
SYMATTR Value2 l=50n w=500n
SYMBOL nmos4 32 -72 M90
SYMATTR InstName M5
SYMATTR Value N_50n
SYMATTR Value2 l=50n w=500n
SYMBOL nmos4 208 -72 M90
SYMATTR InstName M6
SYMATTR Value N_50n
SYMATTR Value2 l=50n w=500n
SYMBOL cap 416 24 R0
SYMATTR Value 100f
SYMATTR InstName Ccol1
SYMBOL cap -64 24 M0
SYMATTR Value 100f
SYMATTR InstName Ccol0
SYMBOL nmos4 -160 -584 R0
SYMATTR InstName M7
SYMATTR Value N_50n
SYMATTR Value2 l=50n w=500n
SYMBOL cap -128 -424 R0
SYMATTR Value 20f
SYMATTR InstName Cmbit0
SYMBOL nmos4 384 392 R0
SYMATTR InstName M8
SYMATTR Value N_50n
SYMATTR Value2 l=50n w=500n
SYMBOL cap 416 552 R0
SYMATTR Value 20f
SYMATTR InstName Cmbit1
SYMBOL voltage -384 72 R0
SYMATTR InstName Vra0
SYMATTR Value PULSE 0 1.5 12n
SYMBOL voltage -480 -232 R0
SYMATTR Value 0
SYMATTR InstName Vsn1