CPU_4MHz_clock.sch

EESchema Schematic File Version 4
LIBS:8080-HC-cache
EELAYER 29 0
EELAYER END
$Descr A3 16535 11693
encoding utf-8
Sheet 8 15
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L 74xx:74HC04 U243
U 2 1 60B1BDCC
P 1200 2000
F 0 "U243" H 1200 2317 50  0000 C CNN
F 1 "74HCU04" H 1200 2226 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 1200 2000 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/74HC_HCT04.pdf" H 1200 2000 50  0001 C CNN
	2    1200 2000
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC04 U243
U 3 1 60B1BFC4
P 2500 2000
F 0 "U243" H 2500 2317 50  0000 C CNN
F 1 "74HCU04" H 2500 2226 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 2500 2000 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/74HC_HCT04.pdf" H 2500 2000 50  0001 C CNN
	3    2500 2000
	1    0    0    -1  
$EndComp
$Comp
L Device:Crystal XTAL1
U 1 1 60B1DD44
P 1200 1450
F 0 "XTAL1" H 1200 1718 50  0000 C CNN
F 1 "4MHz" H 1200 1627 50  0000 C CNN
F 2 "Crystal:Crystal_HC49-U_Vertical" H 1200 1450 50  0001 C CNN
F 3 "~" H 1200 1450 50  0001 C CNN
	1    1200 1450
	1    0    0    -1  
$EndComp
Wire Wire Line
	1350 1450 1500 1450
Wire Wire Line
	1500 1450 1500 2000
Wire Wire Line
	1050 1450 900  1450
Wire Wire Line
	900  1450 900  2000
$Comp
L Device:R R87
U 1 1 60B1E932
P 1200 1000
F 0 "R87" V 993 1000 50  0000 C CNN
F 1 "1M" V 1084 1000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal" V 1130 1000 50  0001 C CNN
F 3 "~" H 1200 1000 50  0001 C CNN
	1    1200 1000
	0    1    1    0   
$EndComp
Wire Wire Line
	1350 1000 1500 1000
Wire Wire Line
	1500 1000 1500 1450
Connection ~ 1500 1450
Wire Wire Line
	1050 1000 900  1000
Wire Wire Line
	900  1000 900  1450
Connection ~ 900  1450
$Comp
L Device:C C14
U 1 1 60B1F385
P 900 2350
F 0 "C14" H 1015 2396 50  0000 L CNN
F 1 "22pF" H 1015 2305 50  0000 L CNN
F 2 "Capacitor_THT:C_Rect_L4.0mm_W2.5mm_P2.50mm" H 938 2200 50  0001 C CNN
F 3 "~" H 900 2350 50  0001 C CNN
	1    900  2350
	1    0    0    -1  
$EndComp
$Comp
L Device:C C15
U 1 1 60B1F854
P 1500 2350
F 0 "C15" H 1615 2396 50  0000 L CNN
F 1 "22pF" H 1615 2305 50  0000 L CNN
F 2 "Capacitor_THT:C_Rect_L4.0mm_W2.5mm_P2.50mm" H 1538 2200 50  0001 C CNN
F 3 "~" H 1500 2350 50  0001 C CNN
	1    1500 2350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR01
U 1 1 60B203A9
P 900 2500
F 0 "#PWR01" H 900 2250 50  0001 C CNN
F 1 "GND" H 905 2327 50  0000 C CNN
F 2 "" H 900 2500 50  0001 C CNN
F 3 "" H 900 2500 50  0001 C CNN
	1    900  2500
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR02
U 1 1 60B2060E
P 1500 2500
F 0 "#PWR02" H 1500 2250 50  0001 C CNN
F 1 "GND" H 1505 2327 50  0000 C CNN
F 2 "" H 1500 2500 50  0001 C CNN
F 3 "" H 1500 2500 50  0001 C CNN
	1    1500 2500
	1    0    0    -1  
$EndComp
Wire Wire Line
	900  2000 900  2200
Connection ~ 900  2000
Wire Wire Line
	1500 2000 1500 2200
Connection ~ 1500 2000
$Comp
L Device:R R88
U 1 1 60B21557
P 1850 2000
F 0 "R88" V 1643 2000 50  0000 C CNN
F 1 "100" V 1734 2000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal" V 1780 2000 50  0001 C CNN
F 3 "~" H 1850 2000 50  0001 C CNN
	1    1850 2000
	0    1    1    0   
$EndComp
Wire Wire Line
	1500 2000 1700 2000
Wire Wire Line
	2000 2000 2200 2000
$Comp
L Device:C C16
U 1 1 60B25A82
P 2950 2350
F 0 "C16" H 3065 2396 50  0000 L CNN
F 1 "56pF" H 3065 2305 50  0000 L CNN
F 2 "Capacitor_THT:C_Rect_L4.0mm_W2.5mm_P2.50mm" H 2988 2200 50  0001 C CNN
F 3 "~" H 2950 2350 50  0001 C CNN
	1    2950 2350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR03
U 1 1 60B25A88
P 2950 2500
F 0 "#PWR03" H 2950 2250 50  0001 C CNN
F 1 "GND" H 2955 2327 50  0000 C CNN
F 2 "" H 2950 2500 50  0001 C CNN
F 3 "" H 2950 2500 50  0001 C CNN
	1    2950 2500
	1    0    0    -1  
$EndComp
Wire Wire Line
	2800 2000 2950 2000
Wire Wire Line
	2950 2000 2950 2200
$Comp
L 74xx:74HC74 U239
U 1 1 60B27410
P 3450 2000
F 0 "U239" H 3450 2481 50  0000 C CNN
F 1 "74HC74" H 3450 2390 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 3450 2000 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 3450 2000 50  0001 C CNN
	1    3450 2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	2950 2000 3150 2000
Connection ~ 2950 2000
Wire Wire Line
	3750 2100 3850 2100
Wire Wire Line
	2950 1300 2950 1900
Wire Wire Line
	2950 1900 3150 1900
Wire Wire Line
	3850 2100 3850 1300
Wire Wire Line
	3850 1300 2950 1300
Wire Wire Line
	4050 2300 4050 1700
Wire Wire Line
	3450 1700 4050 1700
Wire Wire Line
	3450 2300 4050 2300
Wire Wire Line
	3750 1900 4350 1900
$Comp
L 74xx:74HC00 U242
U 4 1 61D02759
P 4650 2000
F 0 "U242" H 4650 2325 50  0000 C CNN
F 1 "74HC00" H 4650 2234 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 4650 2000 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74hc00" H 4650 2000 50  0001 C CNN
	4    4650 2000
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC00 U242
U 3 1 61D04637
P 6650 1900
F 0 "U242" H 6650 2225 50  0000 C CNN
F 1 "74HC00" H 6650 2134 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 6650 1900 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74hc00" H 6650 1900 50  0001 C CNN
	3    6650 1900
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC00 U244
U 4 1 61D06131
P 6650 1250
F 0 "U244" H 6650 1575 50  0000 C CNN
F 1 "74HC00" H 6650 1484 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 6650 1250 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74hc00" H 6650 1250 50  0001 C CNN
	4    6650 1250
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC00 U242
U 2 1 61D08447
P 5650 2900
F 0 "U242" H 5650 3225 50  0000 C CNN
F 1 "74HC00" H 5650 3134 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 5650 2900 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74hc00" H 5650 2900 50  0001 C CNN
	2    5650 2900
	1    0    0    -1  
$EndComp
Wire Wire Line
	6350 2000 6250 2000
Wire Wire Line
	6350 1350 6250 1350
Wire Wire Line
	6250 1350 6250 2000
Connection ~ 6250 2000
Wire Wire Line
	6250 2000 4950 2000
Wire Wire Line
	6350 1150 6150 1150
Wire Wire Line
	6150 1150 6150 1800
Wire Wire Line
	6150 2900 5950 2900
Wire Wire Line
	6350 1800 6150 1800
Connection ~ 6150 1800
Wire Wire Line
	6150 1800 6150 2900
$Comp
L 74xx:74HC04 U243
U 1 1 61D1C05E
P 4650 2800
F 0 "U243" H 4650 3117 50  0000 C CNN
F 1 "74HCU04" H 4650 3026 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 4650 2800 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/74HC_HCT04.pdf" H 4650 2800 50  0001 C CNN
	1    4650 2800
	1    0    0    -1  
$EndComp
Wire Wire Line
	4350 2100 4250 2100
Wire Wire Line
	4250 2100 4250 2800
Wire Wire Line
	4250 2800 4350 2800
Wire Wire Line
	4950 2800 5350 2800
$Comp
L power:VCC #PWR06
U 1 1 61D1FD0A
P 13100 900
F 0 "#PWR06" H 13100 750 50  0001 C CNN
F 1 "VCC" H 13117 1073 50  0000 C CNN
F 2 "" H 13100 900 50  0001 C CNN
F 3 "" H 13100 900 50  0001 C CNN
	1    13100 900 
	1    0    0    -1  
$EndComp
Wire Wire Line
	4250 3250 4250 2800
Connection ~ 4250 2800
$Comp
L Device:R R89
U 1 1 61D26E3A
P 3850 3700
F 0 "R89" H 3920 3746 50  0000 L CNN
F 1 "10K" H 3920 3655 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal" V 3780 3700 50  0001 C CNN
F 3 "~" H 3850 3700 50  0001 C CNN
	1    3850 3700
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR07
U 1 1 61D26E40
P 3850 3550
F 0 "#PWR07" H 3850 3400 50  0001 C CNN
F 1 "VCC" H 3867 3723 50  0000 C CNN
F 2 "" H 3850 3550 50  0001 C CNN
F 3 "" H 3850 3550 50  0001 C CNN
	1    3850 3550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 3850 3850 3850
Wire Wire Line
	3850 3850 5250 3850
Wire Wire Line
	5250 3850 5250 3000
Wire Wire Line
	5250 3000 5350 3000
Connection ~ 3850 3850
Wire Wire Line
	7800 1900 6950 1900
Wire Wire Line
	7800 1250 6950 1250
$Comp
L 74xx:74HC04 U243
U 7 1 632206EC
P 9050 1300
F 0 "U243" H 9280 1346 50  0000 L CNN
F 1 "74HCU04" H 9280 1255 50  0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 9050 1300 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/74HC_HCT04.pdf" H 9050 1300 50  0001 C CNN
	7    9050 1300
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC00 U3
U 5 1 63222336
P 9850 1300
F 0 "U3" H 10080 1346 50  0000 L CNN
F 1 "74HC00" H 10080 1255 50  0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 9850 1300 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74hc00" H 9850 1300 50  0001 C CNN
	5    9850 1300
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC74 U239
U 3 1 63223EF8
P 10600 1300
F 0 "U239" H 10830 1346 50  0000 L CNN
F 1 "74HC74" H 10830 1255 50  0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 10600 1300 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 10600 1300 50  0001 C CNN
	3    10600 1300
	1    0    0    -1  
$EndComp
Wire Wire Line
	9050 800  9850 800 
Wire Wire Line
	9850 800  10600 800 
Connection ~ 9850 800 
Wire Wire Line
	9050 1800 9850 1800
Wire Wire Line
	9850 1800 10600 1800
Connection ~ 9850 1800
$Comp
L power:VCC #PWR04
U 1 1 6325CF1F
P 9850 800
F 0 "#PWR04" H 9850 650 50  0001 C CNN
F 1 "VCC" H 9867 973 50  0000 C CNN
F 2 "" H 9850 800 50  0001 C CNN
F 3 "" H 9850 800 50  0001 C CNN
	1    9850 800 
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR05
U 1 1 6326134A
P 9850 1800
F 0 "#PWR05" H 9850 1550 50  0001 C CNN
F 1 "GND" H 9855 1627 50  0000 C CNN
F 2 "" H 9850 1800 50  0001 C CNN
F 3 "" H 9850 1800 50  0001 C CNN
	1    9850 1800
	1    0    0    -1  
$EndComp
Wire Wire Line
	10600 900  10600 800 
Wire Wire Line
	10600 1800 10600 1700
Wire Wire Line
	3650 3250 4250 3250
$Comp
L Device:R_Network08 B38
U 1 1 5C9C566E
P 13500 1100
F 0 "B38" H 13888 1146 50  0000 L CNN
F 1 "22K" H 13888 1055 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP9" V 13975 1100 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 13500 1100 50  0001 C CNN
	1    13500 1100
	1    0    0    -1  
$EndComp
$Comp
L Device:LED L277
U 1 1 5C9D07E0
P 13600 1700
F 0 "L277" V 13639 1582 50  0000 R CNN
F 1 "LED" V 13548 1582 50  0000 R CNN
F 2 "LED_THT:LED_D3.0mm" H 13600 1700 50  0001 C CNN
F 3 "~" H 13600 1700 50  0001 C CNN
	1    13600 1700
	0    -1   -1   0   
$EndComp
Wire Wire Line
	13500 1300 13500 1500
Wire Wire Line
	13800 1300 13800 1350
Wire Wire Line
	13700 1300 13700 1400
Wire Wire Line
	13600 1300 13600 1450
Wire Wire Line
	13500 1500 13600 1500
Wire Wire Line
	13600 1500 13600 1550
$Comp
L Device:LED L278
U 1 1 5C9EAA21
P 14000 1700
F 0 "L278" V 14039 1582 50  0000 R CNN
F 1 "LED" V 13948 1582 50  0000 R CNN
F 2 "LED_THT:LED_D3.0mm" H 14000 1700 50  0001 C CNN
F 3 "~" H 14000 1700 50  0001 C CNN
	1    14000 1700
	0    -1   -1   0   
$EndComp
Wire Wire Line
	13600 1450 14000 1450
Wire Wire Line
	14000 1450 14000 1550
Text GLabel 13600 1850 3    50   Input ~ 0
BUSAK
Text GLabel 14000 1850 3    50   Input ~ 0
ExclkE
Text GLabel 7800 1900 2    50   Output ~ 0
CLK
Text GLabel 3650 3850 0    50   Input ~ 0
Exclk
Text GLabel 3650 3250 0    50   Input ~ 0
ExclkE
Text GLabel 7800 1250 2    50   Output ~ 0
CLK2
$EndSCHEMATC