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Improve ESD protection of DIGIO Pins

This commit is contained in:
Mario Hüttel 2020-02-17 20:40:35 +01:00
parent f1897d8342
commit adf0a2afb9
2 changed files with 3248 additions and 3164 deletions
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reflow-oven-control-pcb.kicad_pcb
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reflow-oven-control-pcb.sch
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@ -844,13 +844,7 @@ Wire Wire Line
Wire Wire Line
4900 3700 5450 3700
Text Label 4900 3400 0 50 ~ 0
DIGIO0
Text Label 4900 3500 0 50 ~ 0
DIGIO1
Text Label 4900 3600 0 50 ~ 0
DIGIO2
Text Label 4900 3700 0 50 ~ 0
DIGIO3
DIGIO0_PROT
$Comp
L Device:C C102
U 1 1 5DF4E0DE
@ -1175,12 +1169,12 @@ $EndComp
$Comp
L Power_Protection:USBLC6-2SC6 U101
U 1 1 5E0F7F35
P 1800 3450
F 0 "U101" H 2050 3800 50 0000 C CNN
F 1 "USBLC6-2SC6" H 1400 3800 50 0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23-6" H 1050 3850 50 0001 C CNN
F 3 "http://www2.st.com/resource/en/datasheet/CD00050750.pdf" H 2000 3800 50 0001 C CNN
1 1800 3450
P 1550 3450
F 0 "U101" H 1800 3800 50 0000 C CNN
F 1 "USBLC6-2SC6" H 1150 3800 50 0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23-6" H 800 3850 50 0001 C CNN
F 3 "http://www2.st.com/resource/en/datasheet/CD00050750.pdf" H 1750 3800 50 0001 C CNN
1 1550 3450
1 0 0 -1
$EndComp
$Comp
@ -1197,12 +1191,12 @@ $EndComp
$Comp
L power:GND #PWR0108
U 1 1 5E115EE3
P 1800 4000
F 0 "#PWR0108" H 1800 3750 50 0001 C CNN
F 1 "GND" H 1805 3827 50 0000 C CNN
F 2 "" H 1800 4000 50 0001 C CNN
F 3 "" H 1800 4000 50 0001 C CNN
1 1800 4000
P 1550 4000
F 0 "#PWR0108" H 1550 3750 50 0001 C CNN
F 1 "GND" H 1555 3827 50 0000 C CNN
F 2 "" H 1550 4000 50 0001 C CNN
F 3 "" H 1550 4000 50 0001 C CNN
1 1550 4000
1 0 0 -1
$EndComp
$Comp
@ -1219,54 +1213,54 @@ $EndComp
Wire Wire Line
3700 4000 3700 3950
Wire Wire Line
1800 3950 1800 4000
1550 3950 1550 4000
Wire Wire Line
3700 2800 3700 2950
$Comp
L power:+3V3 #PWR0107
U 1 1 5E154ADD
P 1800 2800
F 0 "#PWR0107" H 1800 2650 50 0001 C CNN
F 1 "+3V3" H 1815 2973 50 0000 C CNN
F 2 "" H 1800 2800 50 0001 C CNN
F 3 "" H 1800 2800 50 0001 C CNN
1 1800 2800
P 1550 2800
F 0 "#PWR0107" H 1550 2650 50 0001 C CNN
F 1 "+3V3" H 1565 2973 50 0000 C CNN
F 2 "" H 1550 2800 50 0001 C CNN
F 3 "" H 1550 2800 50 0001 C CNN
1 1550 2800
1 0 0 -1
$EndComp
Wire Wire Line
1800 2800 1800 2950
Text Label 2650 3350 2 50 ~ 0
1550 2800 1550 2950
Text Label 2400 3350 2 50 ~ 0
DIGIO0
Text Label 850 3550 0 50 ~ 0
DIGIO1
Text Label 4550 3550 2 50 ~ 0
DIGIO2
Text Label 550 3550 0 50 ~ 0
DIGIO1_PROT
Text Label 4700 3550 2 50 ~ 0
DIGIO2_PROT
Text Label 2900 3350 0 50 ~ 0
DIGIO3
Wire Wire Line
2650 3350 2300 3350
2400 3350 2050 3350
Wire Wire Line
850 3350 1300 3350
600 3350 1050 3350
Wire Wire Line
4550 3350 4200 3350
Wire Wire Line
2900 3350 3200 3350
Wire Wire Line
850 3550 1300 3550
550 3550 1050 3550
Wire Wire Line
2300 3550 2650 3550
2050 3550 2600 3550
Wire Wire Line
3200 3550 2900 3550
3200 3550 2650 3550
Wire Wire Line
4200 3550 4550 3550
Text Label 2650 3550 2 50 ~ 0
DIGIO0
Text Label 850 3350 0 50 ~ 0
4200 3550 4700 3550
Text Label 2600 3550 2 50 ~ 0
DIGIO0_PROT
Text Label 600 3350 0 50 ~ 0
DIGIO1
Text Label 4550 3350 2 50 ~ 0
DIGIO2
Text Label 2900 3550 0 50 ~ 0
DIGIO3
Text Label 2650 3550 0 50 ~ 0
DIGIO3_PROT
$Comp
L Device:C C101
U 1 1 5E1FEFD9
@ -1500,4 +1494,10 @@ F6 "VREF" O L 7500 3100 50
F7 "TEMP_OUT" O L 7500 3200 50
F8 "FRONTEND_TEMP" B L 7500 3650 50
$EndSheet
Text Label 4900 3500 0 50 ~ 0
DIGIO1_PROT
Text Label 4900 3600 0 50 ~ 0
DIGIO2_PROT
Text Label 4900 3700 0 50 ~ 0
DIGIO3_PROT
$EndSCHEMATC