MOSI
Text Label 2150 2650 0 50 ~ 0
MISO
-Wire Wire Line
- 2050 2750 2350 2750
Text Label 2150 2750 0 50 ~ 0
SCK
$Comp
1 0 0 -1
$EndComp
Wire Wire Line
- 1700 1150 2450 1150
-Wire Wire Line
- 2450 1150 2450 2650
-Wire Wire Line
2050 2650 2450 2650
Wire Wire Line
- 1700 1250 2400 1250
-Wire Wire Line
- 2400 1250 2400 2550
-Wire Wire Line
2050 2550 2400 2550
Wire Wire Line
- 1700 1350 2350 1350
-Wire Wire Line
- 2350 1350 2350 2750
-Wire Wire Line
- 1700 1450 2000 1450
-Text Label 1750 1450 0 50 ~ 0
+ 1700 1450 1850 1450
+Text Label 1700 1450 0 50 ~ 0
~RST
-Text Label 2150 3750 0 50 ~ 0
+Text Label 2100 3750 0 50 ~ 0
~RST
$Comp
L Device:Crystal_Small Y1
1 0 0 -1
$EndComp
Wire Wire Line
- 2050 2250 3500 2250
+ 2050 2250 3700 2250
Wire Wire Line
- 3500 2250 3500 1650
+ 3700 2250 3700 1650
Wire Wire Line
- 3500 1650 3750 1650
+ 3700 1650 3750 1650
Wire Wire Line
- 2050 2350 3550 2350
+ 3600 2350 3600 4650
Wire Wire Line
- 3550 2350 3550 4650
+ 3600 4650 3750 4650
Wire Wire Line
- 3550 4650 3750 4650
+ 2050 2450 3550 2450
Wire Wire Line
- 2050 2450 3450 2450
+ 3550 2450 3550 7650
Wire Wire Line
- 3450 2450 3450 7650
-Wire Wire Line
- 3450 7650 3750 7650
+ 3550 7650 3750 7650
Text Label 2150 2250 0 50 ~ 0
CK1
Text Label 2150 2350 0 50 ~ 0
Text Label 2150 4050 0 50 ~ 0
TXD
Wire Wire Line
- 3350 3150 3350 1350
-Wire Wire Line
- 3350 1350 3750 1350
+ 3500 3150 3500 2150
Wire Wire Line
- 3350 3150 3350 4350
+ 3500 3150 3500 4350
Wire Wire Line
- 3350 4350 3750 4350
-Connection ~ 3350 3150
+ 3500 4350 3750 4350
+Connection ~ 3500 3150
Wire Wire Line
- 3350 4350 3350 7350
+ 3500 4350 3500 7350
Wire Wire Line
- 3350 7350 3750 7350
-Connection ~ 3350 4350
-Text Label 3150 3150 0 50 ~ 0
+ 3500 7350 3750 7350
+Connection ~ 3500 4350
+Text Label 3350 3150 0 50 ~ 0
SD
Wire Wire Line
3750 4450 3650 4450
3650 6850 3750 6850
Connection ~ 3750 6850
Wire Wire Line
- 2050 3150 3350 3150
+ 2050 3150 3500 3150
Wire Wire Line
2950 2800 3100 2800
Connection ~ 2950 2800
Text Label 5150 9150 0 50 ~ 0
FDOT
Wire Wire Line
- 3100 4150 3100 3250
+ 3100 4150 3100 3500
Wire Wire Line
- 3100 3250 5000 3250
+ 3100 3500 5000 3500
Wire Wire Line
- 5000 3250 5000 1650
+ 5000 3500 5000 1650
Wire Wire Line
5000 1650 5350 1650
Wire Wire Line
2050 4150 3100 4150
Wire Wire Line
- 3150 4250 3150 3300
+ 3150 4250 3150 3550
Wire Wire Line
- 3150 3300 5150 3300
+ 3150 3550 5150 3550
Wire Wire Line
- 5150 3300 5150 3150
+ 5150 3550 5150 3150
Wire Wire Line
2050 4250 3150 4250
Wire Wire Line
- 3200 4350 3200 3350
+ 3200 4350 3200 3600
Wire Wire Line
- 3200 3350 5000 3350
+ 3200 3600 5000 3600
Wire Wire Line
- 5000 3350 5000 4650
+ 5000 3600 5000 4650
Wire Wire Line
5000 4650 5350 4650
Wire Wire Line
Wire Wire Line
2050 3950 2450 3950
Wire Wire Line
- 2050 3750 2300 3750
+ 2050 3750 2250 3750
$Comp
L Device:C_Small C6
U 1 1 616E0218
1 1800 5650
1 0 0 -1
$EndComp
-NoConn ~ 2050 3350
NoConn ~ 2050 3450
NoConn ~ 2050 3550
NoConn ~ 2050 3650
EA
Text Label 7350 9050 0 50 ~ 0
FA
+$Comp
+L Timer_RTC:DS1302Z+ U32
+U 1 1 623FA4BC
+P 2950 1550
+F 0 "U32" H 3050 1200 50 0000 L CNN
+F 1 "DS1302Z+" H 2750 1550 50 0000 L CNN
+F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 2950 1050 50 0001 C CNN
+F 3 "https://datasheets.maximintegrated.com/en/ds/DS1302.pdf" H 2950 1550 50 0001 C CNN
+ 1 2950 1550
+ 1 0 0 -1
+$EndComp
+Wire Wire Line
+ 2350 1800 2450 1800
+$Comp
+L power:GND #PWR0138
+U 1 1 62634E4F
+P 2950 1950
+F 0 "#PWR0138" H 2950 1700 50 0001 C CNN
+F 1 "GND" H 2950 1800 50 0000 C CNN
+F 2 "" H 2950 1950 50 0001 C CNN
+F 3 "" H 2950 1950 50 0001 C CNN
+ 1 2950 1950
+ 1 0 0 -1
+$EndComp
+Wire Wire Line
+ 3450 1350 3450 750
+Wire Wire Line
+ 3450 750 2050 750
+Wire Wire Line
+ 1700 1350 2100 1350
+Wire Wire Line
+ 2450 1800 2450 1750
+$Comp
+L Device:Crystal_Small Y2
+U 1 1 623FC7B6
+P 2350 1700
+F 0 "Y2" V 2350 1500 50 0000 L CNN
+F 1 "32.768KHz" V 2500 1500 50 0000 L CNN
+F 2 "Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm_HandSoldering" H 2350 1700 50 0001 C CNN
+F 3 "~" H 2350 1700 50 0001 C CNN
+F 4 "6pF" H 2350 1700 50 0001 C CNN "load"
+ 1 2350 1700
+ 0 1 1 0
+$EndComp
+Wire Wire Line
+ 2350 1600 2450 1600
+Wire Wire Line
+ 2450 1600 2450 1650
+Wire Wire Line
+ 3500 2150 3600 2150
+Wire Wire Line
+ 3600 2150 3600 1350
+Wire Wire Line
+ 3600 1350 3750 1350
+Wire Wire Line
+ 2400 2550 2400 2100
+Wire Wire Line
+ 2400 2100 2000 2100
+Wire Wire Line
+ 2000 2100 2000 1250
+Wire Wire Line
+ 2000 1250 1700 1250
+Wire Wire Line
+ 2450 2650 2450 2050
+Wire Wire Line
+ 2450 2050 2050 2050
+Wire Wire Line
+ 2050 2050 2050 1150
+Wire Wire Line
+ 2050 1150 1700 1150
+Wire Wire Line
+ 2050 2350 3600 2350
+Wire Wire Line
+ 2500 2750 2500 2000
+Wire Wire Line
+ 2500 2000 2100 2000
+Wire Wire Line
+ 2100 2000 2100 1350
+Wire Wire Line
+ 2050 2750 2500 2750
+Connection ~ 2100 1350
+Wire Wire Line
+ 2100 1350 2450 1350
+$Comp
+L power:VCC #PWR0137
+U 1 1 62891898
+P 2850 1150
+F 0 "#PWR0137" H 2850 1000 50 0001 C CNN
+F 1 "VCC" H 2850 1300 50 0000 C CNN
+F 2 "" H 2850 1150 50 0001 C CNN
+F 3 "" H 2850 1150 50 0001 C CNN
+ 1 2850 1150
+ 1 0 0 -1
+$EndComp
+$Comp
+L Device:Battery_Cell BT1
+U 1 1 62892D7C
+P 3150 900
+F 0 "BT1" V 3200 850 50 0000 C CNN
+F 1 "3V" V 3000 950 50 0000 C CNN
+F 2 "Battery:BatteryHolder_Keystone_1060_1x2032" V 3150 960 50 0001 C CNN
+F 3 "~" V 3150 960 50 0001 C CNN
+ 1 3150 900
+ 0 -1 -1 0
+$EndComp
+$Comp
+L power:GND #PWR0139
+U 1 1 6289505D
+P 3250 1000
+F 0 "#PWR0139" H 3250 750 50 0001 C CNN
+F 1 "GND" H 3250 850 50 0000 C CNN
+F 2 "" H 3250 1000 50 0001 C CNN
+F 3 "" H 3250 1000 50 0001 C CNN
+ 1 3250 1000
+ 1 0 0 -1
+$EndComp
+Wire Wire Line
+ 3250 900 3250 1000
+Wire Wire Line
+ 2950 900 2950 1150
+Text Label 2100 3350 0 50 ~ 0
+RTC_CE
+Wire Wire Line
+ 2450 1450 2150 1450
+Text Label 2150 1450 0 50 ~ 0
+RTC_CE
+Wire Wire Line
+ 3200 3350 3200 2150
+Wire Wire Line
+ 3200 2150 2550 2150
+Wire Wire Line
+ 2550 2150 2550 1950
+Wire Wire Line
+ 2550 1950 2150 1950
+Wire Wire Line
+ 2150 1950 2150 1450
+Wire Wire Line
+ 2050 3350 3200 3350
+Wire Wire Line
+ 2050 750 2050 1150
+Connection ~ 2050 1150
+Text Label 1700 1150 0 50 ~ 0
+MISO
+Text Label 1700 1250 0 50 ~ 0
+MOSI
+Text Label 1700 1350 0 50 ~ 0
+SCK
+$Comp
+L power:PWR_FLAG #FLG0103
+U 1 1 62B59C57
+P 2950 900
+F 0 "#FLG0103" H 2950 975 50 0001 C CNN
+F 1 "PWR_FLAG" V 2950 1027 50 0000 L CNN
+F 2 "" H 2950 900 50 0001 C CNN
+F 3 "~" H 2950 900 50 0001 C CNN
+ 1 2950 900
+ 0 -1 -1 0
+$EndComp
+Connection ~ 2950 900
$EndSCHEMATC
projects / nixiedisp / blobdiff