Subversion Repositories OpenARM Single-board Computer

v 20080127 1

C 40000 40000 0 0 0 title-bordered-A3.sym

T 49400 40900 8 10 1 1 0 0 1

data=2008-08-13

T 53300 40600 8 10 1 1 0 0 1

rev=v0.1.2j

T 49400 40600 8 10 1 1 0 0 1

fname=../openarm/power-on-reset.sch

T 52300 41150 8 10 1 1 0 0 1

auth=Jelle de Jong <jelledejong@powercraft.nl>

T 49400 40300 8 10 1 1 0 0 1

page=02

T 50900 40300 8 10 1 1 0 0 1

pages=20

T 48800 41150 8 10 1 1 0 0 1

tiltle=OpenARM SBC Power On Design

T 52300 41400 8 10 1 1 0 0 1

company=PowerCraft Technology

T 52300 40900 8 10 1 1 0 0 1

licence=GPLv3

T 53350 40300 8 10 1 1 0 0 1

project=OpenARM SBC Project

C 41900 48900 1 0 0 input-1.sym

{

T 41900 48900 5 10 0 0 0 0 1

net=+1.2V:1

T 41800 49000 5 8 1 1 0 7 1

value=+1.2V

}

C 41900 48200 1 0 0 input-1.sym

{

T 41900 48200 5 10 0 0 0 0 1

net=+3.125V:1

T 41800 48300 5 8 1 1 0 7 1

value=+3.125V

}

C 41900 47500 1 0 0 input-1.sym

{

T 41900 47500 5 10 0 0 0 0 1

net=+3.281V:1

T 41800 47600 5 8 1 1 0 7 1

value=+3.281V

}

N 42700 47600 42900 47600 4

N 42900 47600 42900 47800 4

N 42700 48300 42900 48300 4

N 42900 48300 42900 48500 4

N 42700 49000 42900 49000 4

N 42900 49000 42900 49200 4

C 42700 49200 1 0 0 generic-power.sym

{

T 42900 49450 5 8 1 1 0 3 1

net=+1.2V:1

}

C 42700 48500 1 0 0 generic-power.sym

{

T 42900 48750 5 8 1 1 0 3 1

net=+3.125V:1

}

C 42700 47800 1 0 0 generic-power.sym

{

T 42900 48050 5 8 1 1 0 3 1

net=+3.281V:1

}

C 47100 49200 1 90 0 resistor-2.sym

{

T 46750 49600 5 10 0 0 90 0 1

device=RESISTOR

T 46800 49400 5 10 1 1 90 0 1

refdes=R201

T 47200 49400 5 10 1 1 90 2 1

value=10k

T 47100 49200 5 10 0 1 90 0 1

footprint=0805

}

C 44700 47800 1 90 0 capacitor-1.sym

{

T 44000 48000 5 10 0 0 90 0 1

device=CAPACITOR

T 44200 48000 5 10 1 1 90 0 1

refdes=C201

T 43800 48000 5 10 0 0 90 0 1

symversion=0.1

T 44700 47800 5 10 0 0 90 0 1

footprint=0805

T 44800 48000 5 10 1 1 90 2 1

value=100nF

}

C 44300 49200 1 0 0 generic-power.sym

{

T 44500 49450 5 8 1 1 0 3 1

net=+3.125V:1

}

C 44400 47300 1 0 0 gnd-1.sym

C 45500 47800 1 0 0 gnd-1.sym

N 44700 48900 44500 48900 4

N 44500 48700 44500 49200 4

N 45600 48100 45600 48300 4

N 44500 47800 44500 47600 4

N 46500 48900 47000 48900 4

N 47000 46100 47000 49200 4

N 47900 48900 47000 48900 4

{

T 47900 48900 5 10 0 0 0 0 1

netname=nRSTA

T 47800 48950 5 10 1 1 0 6 1

value=\_aRST\_

}

N 47000 50100 47000 50300 4

C 44700 45000 1 90 0 capacitor-1.sym

{

T 44000 45200 5 10 0 0 90 0 1

device=CAPACITOR

T 44200 45200 5 10 1 1 90 0 1

refdes=C202

T 43800 45200 5 10 0 0 90 0 1

symversion=0.1

T 44700 45000 5 10 0 0 90 0 1

footprint=0805

T 44800 45200 5 10 1 1 90 2 1

value=100nF

}

C 44300 46400 1 0 0 generic-power.sym

{

T 44500 46650 5 8 1 1 0 3 1

net=+3.281V:1

}

C 44400 44500 1 0 0 gnd-1.sym

C 45500 45000 1 0 0 gnd-1.sym

N 44700 46100 44500 46100 4

N 44500 45900 44500 46400 4

N 45600 45300 45600 45500 4

N 44500 45000 44500 44800 4

N 46500 46100 47000 46100 4

T 48700 41900 9 10 1 0 0 0 5

There is no supervisory circuit for the +1.2V,

this is because I can't find a good and avalible IC.

I combine the supervisors on one reset line,

and hope this gives engough reliabilty.

Please see the documentation for more info.

C 45700 43000 1 90 0 resistor-2.sym

{

T 45350 43400 5 10 0 0 90 0 1

device=RESISTOR

T 45400 43200 5 10 1 1 90 0 1

refdes=R203

T 45800 43200 5 10 1 1 90 2 1

value=10k

T 45700 43000 5 10 0 1 90 0 1

footprint=0805

}

C 45800 41200 1 90 0 capacitor-1.sym

{

T 45100 41400 5 10 0 0 90 0 1

device=CAPACITOR

T 45300 41400 5 10 1 1 90 0 1

refdes=C203

T 44900 41400 5 10 0 0 90 0 1

symversion=0.1

T 45800 41200 5 10 0 0 90 0 1

footprint=0805

T 45900 41400 5 10 1 1 90 2 1

value=100nF

}

C 44300 42500 1 0 0 resistor-2.sym

{

T 44700 42850 5 10 0 0 0 0 1

device=RESISTOR

T 44500 42800 5 10 1 1 0 0 1

refdes=R202

T 44500 42400 5 10 1 1 0 2 1

value=100

T 44300 42500 5 10 0 1 0 0 1

footprint=0805

}

C 42900 42600 1 0 0 switch-pushbutton-no-1.sym

{

T 43300 42900 5 10 1 1 0 0 1

refdes=S201

T 43300 43200 5 10 0 0 0 0 1

device=SWITCH_PUSHBUTTON_NO

}

C 42500 42000 1 0 0 gnd-1.sym

N 42900 42600 42600 42600 4

N 42600 42600 42600 42300 4

N 44300 42600 43900 42600 4

C 45400 44200 1 0 0 generic-power.sym

{

T 45600 44450 5 8 1 1 0 3 1

net=+3.281V:1

}

N 45200 42600 45600 42600 4

N 45600 42100 45600 43000 4

N 45600 43900 45600 44200 4

C 45500 40700 1 0 0 gnd-1.sym

N 45600 41000 45600 41200 4

C 53600 45900 1 0 0 output-1.sym

{

T 53600 45900 5 10 0 0 0 0 1

net=RESET_N:1

T 54500 46000 5 10 1 1 0 1 1

value=RESET_N

}

C 53300 46400 1 90 0 resistor-2.sym

{

T 52950 46800 5 10 0 0 90 0 1

device=RESISTOR

T 53000 46600 5 10 1 1 90 0 1

refdes=R204

T 53400 46600 5 10 1 1 90 2 1

value=5k

T 53300 46400 5 10 0 1 90 0 1

footprint=0805

}

N 53200 47500 53200 47300 4

N 45600 42600 46900 42600 4

{

T 46900 42600 5 10 0 0 0 0 1

netname=nRSTB

T 46800 42650 5 10 1 1 0 6 1

value=\_bRST\_

}

C 53000 47500 1 0 0 generic-power.sym

{

T 53200 47750 5 8 1 1 0 3 1

net=+1.2V:1

}

C 46800 50300 1 0 0 generic-power.sym

{

T 47000 50550 5 8 1 1 0 3 1

net=+3.281V:1

}

N 53200 46400 53200 46000 4

N 53600 46000 52800 46000 4

N 52800 45700 53200 45700 4

N 53200 45700 53200 46000 4

N 53000 49700 54500 49700 4

{

T 54500 49700 5 10 0 0 0 0 1

netname=nonbuf_nRSTA

T 54400 49750 5 10 1 1 0 6 1

value=\_nonbuf_aRST\_

}

C 44700 48300 1 0 0 MCP120-1.sym

{

T 45000 49300 5 10 1 1 0 0 1

device=MCP120/130

T 44995 50470 5 10 0 0 0 0 1

footprint=SOT23

T 44995 49495 5 10 1 1 0 0 1

refdes=U201

}

C 44700 45500 1 0 0 MCP120-1.sym

{

T 45000 46500 5 10 1 1 0 0 1

device=MCP120/130

T 44995 47670 5 10 0 0 0 0 1

footprint=SOT23

T 44995 46695 5 10 1 1 0 0 1

refdes=U202

}

T 53800 44600 9 10 1 0 0 0 4

INPUT OUTPUT

  A     Y

  L     L

  H     Z

C 53000 45200 1 0 0 generic-power.sym

{

T 53200 45450 5 8 1 1 0 3 1

net=+3.281V:1

}

C 53100 44400 1 0 0 gnd-1.sym

N 53200 45200 53200 45100 4

N 53200 45100 52800 45100 4

N 52800 44800 53200 44800 4

N 53200 44800 53200 44700 4

C 50300 44200 1 0 0 SN74LVC2G07.sym

{

T 50500 46400 5 10 1 1 0 0 1

device=SN74LVC2G07DBVR

T 50500 46600 5 10 1 1 0 0 1

footprint=SOT-DBV

T 50500 46800 5 10 1 1 0 0 1

refdes=U204

}

C 50300 48200 1 0 0 SN74LVC1G08.sym

{

T 50500 50100 5 10 1 1 0 0 1

device=SN74LVC1G08DBVRG4

T 50500 50300 5 10 1 1 0 0 1

footprint=SOT-DBV

T 50500 50500 5 10 1 1 0 0 1

refdes=U203

}

C 53200 49200 1 0 0 generic-power.sym

{

T 53400 49450 5 8 1 1 0 3 1

net=+3.281V:1

}

C 53300 48400 1 0 0 gnd-1.sym

N 53400 49200 53400 49100 4

N 53400 48800 53400 48700 4

N 53400 49100 53000 49100 4

N 53000 48800 53400 48800 4

T 50500 48200 9 10 1 0 0 0 1

Y = A * B or Y = \_A\_ + \_B\_

L 51900 48400 52000 48400 3 0 0 0 -1 -1

L 52450 48400 52000 48400 3 0 0 0 -1 -1

N 50300 49700 49600 49700 4

{

T 50300 49700 5 10 0 0 0 0 1

netname=nRSTA

T 50200 49750 5 10 1 1 0 6 1

value=\_aRST\_

}

N 50300 49400 49600 49400 4

{

T 50300 49400 5 10 0 0 0 0 1

netname=nRSTB

T 50200 49450 5 10 1 1 0 6 1

value=\_bRST\_

}

N 50300 46000 48900 46000 4

{

T 50300 46000 5 10 0 0 0 0 1

netname=nonbuf_nRSTA

T 50200 46050 5 10 1 1 0 6 1

value=\_nonbuf_aRST\_

}

C 49400 45600 1 0 0 input-1.sym

{

T 49400 45600 5 10 0 0 0 0 1

net=nonbuf_nRSTB:1

T 49300 45700 5 10 1 1 0 7 1

value=\_nonbuf_bRST\_

}

N 50300 45700 50200 45700 4