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schematics v1.9.2: load capacitors for 32768 Hz quartz.

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Depending on internal capacitance of quartz and RTC chip,
external capacitors are sometimes required (see RTC datasheet).
pull/3/head
Emard 6 years ago
parent 52d4fb3e22
commit 2848d5220b
3 changed files with 123 additions and 11 deletions
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68
power.bak
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@ -7,7 +7,7 @@ encoding utf-8
Sheet 3 11
Title "ULX3S"
Date ""
Rev "1.0.1"
Rev "1.0.2"
Comp "EMARD"
Comment1 "Power"
Comment2 ""
@ -792,21 +792,21 @@ $Comp
L Device:Crystal_GND23 Y2
U 1 1 58D85AAB
P 900 3650
F 0 "Y2" V 750 3450 50 0000 L CNN
F 1 "32768Hz" V 1050 3250 50 0000 L CNN
F 0 "Y2" V 900 3300 50 0000 L CNN
F 1 "32768Hz" V 900 3900 50 0000 L CNN
F 2 "abs25:Crystal_SMD_ABS25" H 900 3650 50 0001 C CNN
F 3 "http://www.iqdfrequencyproducts.com/products/pn/LFXTAL003000Reel.pdf" H 900 3650 50 0001 C CNN
F 4 "www.iqdfrequencyproducts.com" H 900 3650 60 0001 C CNN "MNF1_URL"
F 5 "LFXTAL003000Reel" H 900 3650 60 0001 C CNN "MPN"
F 6 "LFXTAL009709Bulk" V 900 3650 50 0001 C CNN "MPN2"
F 6 "LFXTAL009678REEL" V 900 3650 50 0001 C CNN "MPN2"
F 7 "CM7V-T1A-32.768k-9pF-20PPM-TA-QA T3" V 900 3650 50 0001 C CNN "MPN3"
F 8 "www.mouser.com" H 900 3650 60 0001 C CNN "Mouser_URL"
F 9 "815-ABS25-32.768KHZT" H 900 3650 60 0001 C CNN "Mouser"
F 10 "449-LFXTAL009709BULK" V 900 3650 50 0001 C CNN "Mouser2"
F 10 "449-LFXTAL009678REEL " V 900 3650 50 0001 C CNN "Mouser2"
F 11 "428-201568-MG03" V 900 3650 50 0001 C CNN "Mouser3"
F 12 "1923-1019-1-ND" V 900 3650 50 0001 C CNN "Digikey"
1 900 3650
0 1 1 0
0 1 -1 0
$EndComp
NoConn ~ 700 3650
NoConn ~ 1100 3650
@ -3235,4 +3235,60 @@ Wire Wire Line
2900 3300 3000 3300
Text GLabel 3300 3300 2 60 Input ~ 0
US2_ID
$Comp
L Device:C C56
U 1 1 5B446958
P 900 3250
F 0 "C56" H 650 3250 50 0000 L CNN
F 1 "6.8pF" H 650 3150 50 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 938 3100 50 0001 C CNN
F 3 "" H 900 3250 50 0000 C CNN
F 4 "www.yageo.com" H 900 3250 50 0001 C CNN "MNF1_URL"
F 5 "CC0603DRNPO9BN6R8" H 900 3250 50 0001 C CNN "MPN"
F 6 "Leave empty" H 900 3250 50 0001 C CNN "Note"
1 900 3250
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR090
U 1 1 5B447139
P 900 3100
F 0 "#PWR090" H 900 2850 50 0001 C CNN
F 1 "GND" H 900 2950 50 0000 C CNN
F 2 "" H 900 3100 50 0000 C CNN
F 3 "" H 900 3100 50 0000 C CNN
1 900 3100
-1 0 0 1
$EndComp
Wire Wire Line
900 3400 900 3450
Connection ~ 900 3450
$Comp
L Device:C C57
U 1 1 5B489CA2
P 900 4050
F 0 "C57" H 650 4050 50 0000 L CNN
F 1 "6.8pF" H 650 4150 50 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 938 3900 50 0001 C CNN
F 3 "" H 900 4050 50 0000 C CNN
F 4 "www.yageo.com" H 900 4050 50 0001 C CNN "MNF1_URL"
F 5 "CC0603DRNPO9BN6R8" H 900 4050 50 0001 C CNN "MPN"
F 6 "Leave empty" H 900 4050 50 0001 C CNN "Note"
1 900 4050
1 0 0 1
$EndComp
$Comp
L power:GND #PWR091
U 1 1 5B489CA8
P 900 4200
F 0 "#PWR091" H 900 3950 50 0001 C CNN
F 1 "GND" H 900 4050 50 0000 C CNN
F 2 "" H 900 4200 50 0000 C CNN
F 3 "" H 900 4200 50 0000 C CNN
1 900 4200
-1 0 0 -1
$EndComp
Wire Wire Line
900 3900 900 3850
Connection ~ 900 3850
$EndSCHEMATC

64
power.sch
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@ -7,7 +7,7 @@ encoding utf-8
Sheet 3 11
Title "ULX3S"
Date ""
Rev "1.0.1"
Rev "1.0.2"
Comp "EMARD"
Comment1 "Power"
Comment2 ""
@ -792,8 +792,8 @@ $Comp
L Device:Crystal_GND23 Y2
U 1 1 58D85AAB
P 900 3650
F 0 "Y2" V 750 3450 50 0000 L CNN
F 1 "32768Hz" V 1050 3250 50 0000 L CNN
F 0 "Y2" V 900 3300 50 0000 L CNN
F 1 "32768Hz" V 900 3900 50 0000 L CNN
F 2 "abs25:Crystal_SMD_ABS25" H 900 3650 50 0001 C CNN
F 3 "http://www.iqdfrequencyproducts.com/products/pn/LFXTAL003000Reel.pdf" H 900 3650 50 0001 C CNN
F 4 "www.iqdfrequencyproducts.com" H 900 3650 60 0001 C CNN "MNF1_URL"
@ -806,7 +806,7 @@ F 10 "449-LFXTAL009678REEL " V 900 3650 50 0001 C CNN "Mouser2"
F 11 "428-201568-MG03" V 900 3650 50 0001 C CNN "Mouser3"
F 12 "1923-1019-1-ND" V 900 3650 50 0001 C CNN "Digikey"
1 900 3650
0 1 1 0
0 1 -1 0
$EndComp
NoConn ~ 700 3650
NoConn ~ 1100 3650
@ -3235,4 +3235,60 @@ Wire Wire Line
2900 3300 3000 3300
Text GLabel 3300 3300 2 60 Input ~ 0
US2_ID
$Comp
L Device:C C56
U 1 1 5B446958
P 900 3250
F 0 "C56" H 650 3250 50 0000 L CNN
F 1 "6.8pF" H 650 3150 50 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 938 3100 50 0001 C CNN
F 3 "" H 900 3250 50 0000 C CNN
F 4 "www.yageo.com" H 900 3250 50 0001 C CNN "MNF1_URL"
F 5 "CC0603DRNPO9BN6R8" H 900 3250 50 0001 C CNN "MPN"
F 6 "Leave empty" H 900 3250 50 0001 C CNN "Note"
1 900 3250
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR090
U 1 1 5B447139
P 900 3100
F 0 "#PWR090" H 900 2850 50 0001 C CNN
F 1 "GND" H 900 2950 50 0000 C CNN
F 2 "" H 900 3100 50 0000 C CNN
F 3 "" H 900 3100 50 0000 C CNN
1 900 3100
-1 0 0 1
$EndComp
Wire Wire Line
900 3400 900 3450
Connection ~ 900 3450
$Comp
L Device:C C57
U 1 1 5B489CA2
P 900 4050
F 0 "C57" H 650 4050 50 0000 L CNN
F 1 "6.8pF" H 650 4150 50 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 938 3900 50 0001 C CNN
F 3 "" H 900 4050 50 0000 C CNN
F 4 "www.yageo.com" H 900 4050 50 0001 C CNN "MNF1_URL"
F 5 "CC0603DRNPO9BN6R8" H 900 4050 50 0001 C CNN "MPN"
F 6 "Leave empty" H 900 4050 50 0001 C CNN "Note"
1 900 4050
1 0 0 1
$EndComp
$Comp
L power:GND #PWR091
U 1 1 5B489CA8
P 900 4200
F 0 "#PWR091" H 900 3950 50 0001 C CNN
F 1 "GND" H 900 4050 50 0000 C CNN
F 2 "" H 900 4200 50 0000 C CNN
F 3 "" H 900 4200 50 0000 C CNN
1 900 4200
-1 0 0 -1
$EndComp
Wire Wire Line
900 3900 900 3850
Connection ~ 900 3850
$EndSCHEMATC

2
ulx3s.sch
Unescape View File

@ -7,7 +7,7 @@ encoding utf-8
Sheet 1 11
Title "ULX3S"
Date ""
Rev "1.9.1"
Rev "1.9.2"
Comp "EMARD"
Comment1 "Root sheet"
Comment2 ""

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