EESchema Schematic File Version 4
LIBS:1802-cache
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "1802 / PIXIE CPU"
Date "2019-09-09"
Rev "1"
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Connector_Generic:Conn_01x40 J1
U 1 1 5D4D81A3
P 800 2800
F 0 "J1" H 718 4917 50  0000 C CNN
F 1 "Conn_01x40" H 718 4826 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x40_P2.54mm_Horizontal" H 800 2800 50  0001 C CNN
F 3 "~" H 800 2800 50  0001 C CNN
	1    800  2800
	-1   0    0    -1  
$EndComp
Text GLabel 1000 900  2    50   Input ~ 0
A15
Text GLabel 1000 1000 2    50   Input ~ 0
A14
Text GLabel 1000 1100 2    50   Input ~ 0
A13
Text GLabel 1000 1200 2    50   Input ~ 0
A12
Text GLabel 1000 1300 2    50   Input ~ 0
A11
Text GLabel 1000 1400 2    50   Input ~ 0
A10
Text GLabel 1000 1500 2    50   Input ~ 0
A9
Text GLabel 1000 1600 2    50   Input ~ 0
A8
Text GLabel 1000 1700 2    50   Input ~ 0
A7
Text GLabel 1000 1800 2    50   Input ~ 0
A6
Text GLabel 1000 1900 2    50   Input ~ 0
A5
Text GLabel 1000 2000 2    50   Input ~ 0
A4
Text GLabel 1000 2100 2    50   Input ~ 0
A3
Text GLabel 1000 2200 2    50   Input ~ 0
A2
Text GLabel 1000 2300 2    50   Input ~ 0
A1
Text GLabel 1000 2400 2    50   Input ~ 0
A0
Text GLabel 1000 2500 2    50   Output ~ 0
GND
Text GLabel 1000 2600 2    50   Output ~ 0
VCC
Text GLabel 2800 2800 2    50   Output ~ 0
RESET
Text GLabel 1000 2900 2    50   Output ~ 0
CLK
Text GLabel 1000 3000 2    50   Output ~ 0
INT
Text GLabel 1000 3100 2    50   Input ~ 0
MREQ
Text GLabel 1000 3200 2    50   Input ~ 0
WR
Text GLabel 1000 3300 2    50   Input ~ 0
RD
Text GLabel 1000 3400 2    50   Input ~ 0
IORQ
Text GLabel 1000 3500 2    50   3State ~ 0
D0
Text GLabel 1000 3600 2    50   3State ~ 0
D1
Text GLabel 1000 3700 2    50   3State ~ 0
D2
Text GLabel 1000 3800 2    50   3State ~ 0
D3
Text GLabel 1000 3900 2    50   3State ~ 0
D4
Text GLabel 1000 4000 2    50   3State ~ 0
D5
Text GLabel 1000 4100 2    50   3State ~ 0
D6
Text GLabel 1000 4200 2    50   3State ~ 0
D7
Text GLabel 4200 3150 0    50   3State ~ 0
D0
Text GLabel 4200 3250 0    50   3State ~ 0
D1
Text GLabel 4200 3350 0    50   3State ~ 0
D2
Text GLabel 4200 3450 0    50   3State ~ 0
D3
Text GLabel 4200 3550 0    50   3State ~ 0
D4
Text GLabel 4200 3650 0    50   3State ~ 0
D5
Text GLabel 4200 3750 0    50   3State ~ 0
D6
Text GLabel 4200 3850 0    50   3State ~ 0
D7
$Comp
L power:GND #PWR0101
U 1 1 5D758142
P 4700 4050
F 0 "#PWR0101" H 4700 3800 50  0001 C CNN
F 1 "GND" H 4705 3877 50  0000 C CNN
F 2 "" H 4700 4050 50  0001 C CNN
F 3 "" H 4700 4050 50  0001 C CNN
	1    4700 4050
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR0102
U 1 1 5D75831B
P 4600 1250
F 0 "#PWR0102" H 4600 1100 50  0001 C CNN
F 1 "VCC" H 4617 1423 50  0000 C CNN
F 2 "" H 4600 1250 50  0001 C CNN
F 3 "" H 4600 1250 50  0001 C CNN
	1    4600 1250
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS573 U2
U 1 1 5D7585B3
P 6900 3650
F 0 "U2" H 7250 4650 50  0000 C CNN
F 1 "74HCT573" H 7250 4500 50  0000 C CNN
F 2 "Package_DIP:DIP-20_W7.62mm" H 6900 3650 50  0001 C CNN
F 3 "74xx/74hc573.pdf" H 6900 3650 50  0001 C CNN
	1    6900 3650
	1    0    0    -1  
$EndComp
Wire Wire Line
	5200 3250 5400 3250
Wire Wire Line
	5200 3150 5300 3150
Wire Wire Line
	5200 3450 5600 3450
Wire Wire Line
	5200 3350 5500 3350
Wire Wire Line
	6400 3550 5700 3550
Wire Wire Line
	6400 3650 5800 3650
Wire Wire Line
	5200 3750 5900 3750
Wire Wire Line
	6400 3850 6000 3850
Wire Wire Line
	6400 4150 6400 4450
Wire Wire Line
	6400 4450 6900 4450
$Comp
L power:GND #PWR0103
U 1 1 5D75C646
P 6900 4450
F 0 "#PWR0103" H 6900 4200 50  0001 C CNN
F 1 "GND" H 6905 4277 50  0000 C CNN
F 2 "" H 6900 4450 50  0001 C CNN
F 3 "" H 6900 4450 50  0001 C CNN
	1    6900 4450
	1    0    0    -1  
$EndComp
Connection ~ 6900 4450
$Comp
L power:VCC #PWR0104
U 1 1 5D75C89B
P 6900 2850
F 0 "#PWR0104" H 6900 2700 50  0001 C CNN
F 1 "VCC" H 6917 3023 50  0000 C CNN
F 2 "" H 6900 2850 50  0001 C CNN
F 3 "" H 6900 2850 50  0001 C CNN
	1    6900 2850
	1    0    0    -1  
$EndComp
Text GLabel 7650 4300 3    50   Output ~ 0
A8
Text GLabel 7750 4300 3    50   Output ~ 0
A9
Text GLabel 7850 4300 3    50   Output ~ 0
A10
Text GLabel 7950 4300 3    50   Output ~ 0
A11
Text GLabel 8050 4300 3    50   Output ~ 0
A12
Text GLabel 8150 4300 3    50   Output ~ 0
A13
Text GLabel 8250 4300 3    50   Output ~ 0
A14
Text GLabel 8350 4300 3    50   Output ~ 0
A15
Wire Wire Line
	6300 2150 6300 4050
Wire Wire Line
	6300 4050 6400 4050
Text GLabel 5300 4300 3    50   Output ~ 0
A0
Text GLabel 5400 4300 3    50   Output ~ 0
A1
Text GLabel 5500 4300 3    50   Output ~ 0
A2
Text GLabel 5600 4300 3    50   Output ~ 0
A3
Text GLabel 5700 4300 3    50   Output ~ 0
A4
Text GLabel 5800 4300 3    50   Output ~ 0
A5
Text GLabel 5900 4300 3    50   Output ~ 0
A6
Text GLabel 6000 4300 3    50   Output ~ 0
A7
Wire Wire Line
	6000 4300 6000 3850
Connection ~ 6000 3850
Wire Wire Line
	6000 3850 5200 3850
Wire Wire Line
	5900 4300 5900 3750
Connection ~ 5900 3750
Wire Wire Line
	5900 3750 6400 3750
Wire Wire Line
	5800 4300 5800 3650
Connection ~ 5800 3650
Wire Wire Line
	5800 3650 5200 3650
Wire Wire Line
	5700 4300 5700 3550
Connection ~ 5700 3550
Wire Wire Line
	5700 3550 5200 3550
Wire Wire Line
	5600 4300 5600 3450
Connection ~ 5600 3450
Wire Wire Line
	5600 3450 6400 3450
Wire Wire Line
	5500 4300 5500 3350
Connection ~ 5500 3350
Wire Wire Line
	5500 3350 6400 3350
Connection ~ 5400 3250
Wire Wire Line
	5400 3250 6400 3250
Wire Wire Line
	5300 4300 5300 3150
Connection ~ 5300 3150
Wire Wire Line
	5300 3150 6400 3150
Wire Wire Line
	5400 3250 5400 4300
Text GLabel 5200 2850 2    50   Output ~ 0
WR
Text GLabel 5200 2950 2    50   Output ~ 0
RD
Text GLabel 4200 1650 0    50   Input ~ 0
CLK
Text GLabel 4200 2850 0    50   Input ~ 0
RESET
$Comp
L power:VCC #PWR0105
U 1 1 5D76AC6A
P 4800 1250
F 0 "#PWR0105" H 4800 1100 50  0001 C CNN
F 1 "VCC" H 4817 1423 50  0000 C CNN
F 2 "" H 4800 1250 50  0001 C CNN
F 3 "" H 4800 1250 50  0001 C CNN
	1    4800 1250
	1    0    0    -1  
$EndComp
Text GLabel 2800 2150 0    50   Input ~ 0
INT
Wire Wire Line
	5200 2150 6300 2150
$Comp
L Device:R_Network08 RN1
U 1 1 5D773D7D
P 3500 1350
F 0 "RN1" H 3888 1396 50  0000 L CNN
F 1 "10K" H 3888 1305 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP9" V 3975 1350 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 3500 1350 50  0001 C CNN
	1    3500 1350
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 1550 3800 1950
Wire Wire Line
	3800 1950 4200 1950
Wire Wire Line
	3700 2050 3700 1550
Wire Wire Line
	3600 1550 3600 2150
Connection ~ 3600 2150
Wire Wire Line
	3600 2150 4200 2150
Wire Wire Line
	3500 2350 3500 1550
Wire Wire Line
	4200 2450 3400 2450
Wire Wire Line
	3400 2450 3400 1550
Wire Wire Line
	3300 2550 3300 1550
Wire Wire Line
	3300 2550 4200 2550
Wire Wire Line
	4200 2650 3200 2650
Wire Wire Line
	3200 2650 3200 1550
Wire Wire Line
	2800 2150 3600 2150
Wire Wire Line
	3100 1550 3100 2950
Wire Wire Line
	3100 2950 4200 2950
$Comp
L Device:R R1
U 1 1 5D780E49
P 1700 1350
F 0 "R1" H 1770 1396 50  0000 L CNN
F 1 "10K" H 1770 1305 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1630 1350 50  0001 C CNN
F 3 "~" H 1700 1350 50  0001 C CNN
	1    1700 1350
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR0106
U 1 1 5D78186B
P 3100 1150
F 0 "#PWR0106" H 3100 1000 50  0001 C CNN
F 1 "VCC" H 3117 1323 50  0000 C CNN
F 2 "" H 3100 1150 50  0001 C CNN
F 3 "" H 3100 1150 50  0001 C CNN
	1    3100 1150
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR0107
U 1 1 5D781D22
P 1700 1200
F 0 "#PWR0107" H 1700 1050 50  0001 C CNN
F 1 "VCC" H 1717 1373 50  0000 C CNN
F 2 "" H 1700 1200 50  0001 C CNN
F 3 "" H 1700 1200 50  0001 C CNN
	1    1700 1200
	1    0    0    -1  
$EndComp
Wire Wire Line
	1000 2700 1700 2700
Wire Wire Line
	1700 2700 1700 1500
$Comp
L 74xx:74LS688 U3
U 1 1 5D79AFDE
P 9100 3150
F 0 "U3" H 9550 3600 50  0000 L CNN
F 1 "74HCT688" H 9450 3500 50  0000 L CNN
F 2 "Package_DIP:DIP-20_W7.62mm" H 9100 3150 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS688" H 9100 3150 50  0001 C CNN
	1    9100 3150
	1    0    0    -1  
$EndComp
Wire Wire Line
	7400 3150 7650 3150
Wire Wire Line
	7400 3250 7750 3250
Wire Wire Line
	8600 3350 7850 3350
Wire Wire Line
	7400 3450 7950 3450
Wire Wire Line
	7400 3550 8050 3550
Wire Wire Line
	7400 3650 8150 3650
Wire Wire Line
	8600 3750 8250 3750
Wire Wire Line
	8600 4050 8600 4350
Wire Wire Line
	8600 4350 9100 4350
$Comp
L power:GND #PWR0108
U 1 1 5D7AB550
P 9100 4350
F 0 "#PWR0108" H 9100 4100 50  0001 C CNN
F 1 "GND" H 9105 4177 50  0000 C CNN
F 2 "" H 9100 4350 50  0001 C CNN
F 3 "" H 9100 4350 50  0001 C CNN
	1    9100 4350
	1    0    0    -1  
$EndComp
Connection ~ 9100 4350
$Comp
L power:VCC #PWR0109
U 1 1 5D7AB812
P 9100 1950
F 0 "#PWR0109" H 9100 1800 50  0001 C CNN
F 1 "VCC" H 9117 2123 50  0000 C CNN
F 2 "" H 9100 1950 50  0001 C CNN
F 3 "" H 9100 1950 50  0001 C CNN
	1    9100 1950
	1    0    0    -1  
$EndComp
Wire Wire Line
	9600 2250 9700 2250
Wire Wire Line
	8600 2950 8600 2850
Wire Wire Line
	8600 1950 9100 1950
Connection ~ 8600 2250
Wire Wire Line
	8600 2250 8600 1950
Connection ~ 8600 2350
Wire Wire Line
	8600 2350 8600 2250
Connection ~ 8600 2450
Wire Wire Line
	8600 2450 8600 2350
Connection ~ 8600 2550
Wire Wire Line
	8600 2550 8600 2450
Connection ~ 8600 2650
Wire Wire Line
	8600 2650 8600 2550
Connection ~ 8600 2750
Wire Wire Line
	8600 2750 8600 2650
Connection ~ 8600 2850
Wire Wire Line
	8600 2850 8600 2750
Connection ~ 9100 1950
Text Notes 8150 1750 0    50   ~ 0
Check ideal range\n
Text GLabel 10400 2250 2    50   Output ~ 0
MREQ
Text GLabel 10400 2550 2    50   Output ~ 0
IORQ
Wire Wire Line
	9700 2250 9700 2550
Wire Wire Line
	9700 2550 10400 2550
Connection ~ 9700 2250
Wire Wire Line
	9700 2250 9800 2250
Wire Wire Line
	7400 3850 8350 3850
Wire Wire Line
	8350 4300 8350 3850
Connection ~ 8350 3850
Wire Wire Line
	8350 3850 8600 3850
Wire Wire Line
	8250 4300 8250 3750
Connection ~ 8250 3750
Wire Wire Line
	8250 3750 7400 3750
Wire Wire Line
	8150 4300 8150 3650
Connection ~ 8150 3650
Wire Wire Line
	8150 3650 8600 3650
Wire Wire Line
	8050 4300 8050 3550
Connection ~ 8050 3550
Wire Wire Line
	8050 3550 8600 3550
Wire Wire Line
	7950 4300 7950 3450
Connection ~ 7950 3450
Wire Wire Line
	7950 3450 8600 3450
Wire Wire Line
	7850 4300 7850 3350
Connection ~ 7850 3350
Wire Wire Line
	7850 3350 7400 3350
Connection ~ 7750 3250
Wire Wire Line
	7750 3250 8600 3250
Wire Wire Line
	7750 3250 7750 4300
Wire Wire Line
	7650 4300 7650 3150
Connection ~ 7650 3150
Wire Wire Line
	7650 3150 8600 3150
Text Notes 2750 5050 0    50   ~ 0
How to qualify MRD - do we need to. Otherwise we get spurious read accesses with the old bits (FF) and in theory could get glitches as it changes to the I/O port ?\n
$Comp
L Alan:CDP1861 U5
U 1 1 5D7E3E02
P 4350 6100
F 0 "U5" H 4600 6850 50  0000 C CNN
F 1 "CDP1861" H 4600 6750 50  0000 C CNN
F 2 "Package_DIP:DIP-24_W15.24mm" H 4200 6100 50  0001 C CNN
F 3 "" H 4200 6100 50  0001 C CNN
	1    4350 6100
	1    0    0    -1  
$EndComp
$Comp
L CPU:CDP1802BCEX U1
U 1 1 5D756BA0
P 4700 2650
F 0 "U1" H 5250 4150 50  0000 C CNN
F 1 "CDP1802BCEX" H 5250 4050 50  0000 C CNN
F 2 "Package_DIP:DIP-40_W15.24mm" H 4700 4550 50  0001 C CNN
F 3 "http://www.cosmacelf.com/publications/data-sheets/cdp1802.pdf" H 4700 4650 50  0001 C CNN
	1    4700 2650
	1    0    0    -1  
$EndComp
Text GLabel 4200 1750 0    50   Output ~ 0
CLKOUT
Text GLabel 3850 5750 0    50   Input ~ 0
CLKOUT
Text GLabel 3850 5950 0    50   3State ~ 0
INT
Text GLabel 3850 6050 0    50   Input ~ 0
TPA
Text GLabel 3850 6150 0    50   Input ~ 0
TPB
Text GLabel 5200 2250 2    50   Output ~ 0
TPB
Text GLabel 6600 2150 2    50   Output ~ 0
TPA
Wire Wire Line
	6300 2150 6600 2150
Connection ~ 6300 2150
Text GLabel 2800 2050 0    50   Output ~ 0
DMAOUT
Wire Wire Line
	2800 2050 3700 2050
Connection ~ 3700 2050
Wire Wire Line
	3700 2050 4200 2050
Text GLabel 3850 5850 0    50   Input ~ 0
DMAOUT
Text GLabel 3850 6450 0    50   Input ~ 0
RESET
Text GLabel 3850 6550 0    50   Output ~ 0
EF1
Text GLabel 2800 2350 0    50   Input ~ 0
EF1
Wire Wire Line
	2800 2350 3500 2350
Connection ~ 3500 2350
Wire Wire Line
	3500 2350 4200 2350
Text GLabel 5200 1850 2    50   Output ~ 0
SC0
Text GLabel 5200 1950 2    50   Output ~ 0
SC1
Text GLabel 4850 5850 2    50   Input ~ 0
SC1
Text GLabel 4850 5950 2    50   Input ~ 0
SC0
Text GLabel 4850 6050 2    50   Input ~ 0
D7
Text GLabel 4850 6150 2    50   Input ~ 0
D6
Text GLabel 4850 6250 2    50   Input ~ 0
D5
Text GLabel 4850 6350 2    50   Input ~ 0
D4
Text GLabel 4850 6450 2    50   Input ~ 0
D3
Text GLabel 4850 6550 2    50   Input ~ 0
D2
Text GLabel 4850 6650 2    50   Input ~ 0
D1
Text GLabel 4850 6750 2    50   Input ~ 0
D0
$Comp
L power:VCC #PWR0110
U 1 1 5D7FDF96
P 4350 5600
F 0 "#PWR0110" H 4350 5450 50  0001 C CNN
F 1 "VCC" H 4367 5773 50  0000 C CNN
F 2 "" H 4350 5600 50  0001 C CNN
F 3 "" H 4350 5600 50  0001 C CNN
	1    4350 5600
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0111
U 1 1 5D7FE561
P 4350 6900
F 0 "#PWR0111" H 4350 6650 50  0001 C CNN
F 1 "GND" H 4355 6727 50  0000 C CNN
F 2 "" H 4350 6900 50  0001 C CNN
F 3 "" H 4350 6900 50  0001 C CNN
	1    4350 6900
	1    0    0    -1  
$EndComp
Text GLabel 5200 2450 2    50   Output ~ 0
N0
Text GLabel 5200 2550 2    50   Output ~ 0
N1
NoConn ~ 5200 2650
Text GLabel 3850 6650 0    50   Input ~ 0
N0
Text GLabel 3850 6750 0    50   Input ~ 0
N1
$Comp
L Device:R R2
U 1 1 5D807115
P 3050 6250
F 0 "R2" V 2843 6250 50  0000 C CNN
F 1 "3K3" V 2934 6250 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 2980 6250 50  0001 C CNN
F 3 "~" H 3050 6250 50  0001 C CNN
	1    3050 6250
	0    1    1    0   
$EndComp
$Comp
L Device:R R3
U 1 1 5D8076B6
P 3050 6600
F 0 "R3" V 2843 6600 50  0000 C CNN
F 1 "1K" V 2934 6600 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 2980 6600 50  0001 C CNN
F 3 "~" H 3050 6600 50  0001 C CNN
	1    3050 6600
	0    1    1    0   
$EndComp
$Comp
L Device:R R4
U 1 1 5D80952E
P 2650 6900
F 0 "R4" H 2580 6854 50  0000 R CNN
F 1 "200" H 2580 6945 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 2580 6900 50  0001 C CNN
F 3 "~" H 2650 6900 50  0001 C CNN
	1    2650 6900
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR0112
U 1 1 5D80A388
P 2650 7050
F 0 "#PWR0112" H 2650 6800 50  0001 C CNN
F 1 "GND" H 2655 6877 50  0000 C CNN
F 2 "" H 2650 7050 50  0001 C CNN
F 3 "" H 2650 7050 50  0001 C CNN
	1    2650 7050
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 6250 3200 6250
Wire Wire Line
	3850 6350 3450 6350
Wire Wire Line
	3450 6350 3450 6600
Wire Wire Line
	3450 6600 3200 6600
Wire Wire Line
	2650 6600 2650 6750
Wire Wire Line
	2900 6250 2650 6250
Wire Wire Line
	2650 6250 2650 6600
Connection ~ 2650 6600
Connection ~ 2650 7050
$Comp
L Oscillator:CXO_DIP8 X1
U 1 1 5D81F4C7
P 2250 5750
F 0 "X1" H 2800 6200 50  0000 L CNN
F 1 "CXO_DIP8" H 2650 6050 50  0000 L CNN
F 2 "Oscillator:Oscillator_DIP-8" H 2700 5400 50  0001 C CNN
F 3 "http://cdn-reichelt.de/documents/datenblatt/B400/OSZI.pdf" H 2150 5750 50  0001 C CNN
	1    2250 5750
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0113
U 1 1 5D81FE9C
P 2250 6050
F 0 "#PWR0113" H 2250 5800 50  0001 C CNN
F 1 "GND" H 2255 5877 50  0000 C CNN
F 2 "" H 2250 6050 50  0001 C CNN
F 3 "" H 2250 6050 50  0001 C CNN
	1    2250 6050
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR0114
U 1 1 5D820401
P 2250 5450
F 0 "#PWR0114" H 2250 5300 50  0001 C CNN
F 1 "VCC" H 2267 5623 50  0000 C CNN
F 2 "" H 2250 5450 50  0001 C CNN
F 3 "" H 2250 5450 50  0001 C CNN
	1    2250 5450
	1    0    0    -1  
$EndComp
Text GLabel 2550 5750 2    50   Output ~ 0
CLK
NoConn ~ 4850 5750
$Comp
L 74xx:74HC14 U4
U 1 1 5D8278EF
P 10100 2250
F 0 "U4" H 10100 2567 50  0000 C CNN
F 1 "74HC14" H 10100 2476 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 10100 2250 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 10100 2250 50  0001 C CNN
	1    10100 2250
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC14 U4
U 2 1 5D82D2C2
P 1900 2800
F 0 "U4" H 1900 3117 50  0000 C CNN
F 1 "74HC14" H 1900 3026 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 1900 2800 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 1900 2800 50  0001 C CNN
	2    1900 2800
	1    0    0    -1  
$EndComp
Wire Wire Line
	1000 2800 1600 2800
$Comp
L 74xx:74HC14 U4
U 3 1 5D85426C
P 2500 2800
F 0 "U4" H 2500 3117 50  0000 C CNN
F 1 "74HC14" H 2500 3026 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 2500 2800 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 2500 2800 50  0001 C CNN
	3    2500 2800
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC14 U4
U 4 1 5D859CA2
P 10050 4900
F 0 "U4" H 10050 5217 50  0000 C CNN
F 1 "74HC14" H 10050 5126 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 10050 4900 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 10050 4900 50  0001 C CNN
	4    10050 4900
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC14 U4
U 5 1 5D85B346
P 10050 5400
F 0 "U4" H 10050 5717 50  0000 C CNN
F 1 "74HC14" H 10050 5626 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 10050 5400 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 10050 5400 50  0001 C CNN
	5    10050 5400
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC14 U4
U 6 1 5D85C250
P 10050 5900
F 0 "U4" H 10050 6217 50  0000 C CNN
F 1 "74HC14" H 10050 6126 50  0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 10050 5900 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 10050 5900 50  0001 C CNN
	6    10050 5900
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC14 U4
U 7 1 5D85D2E6
P 9150 5850
F 0 "U4" H 9380 5896 50  0000 L CNN
F 1 "74HC14" H 9380 5805 50  0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 9150 5850 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 9150 5850 50  0001 C CNN
	7    9150 5850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0115
U 1 1 5D85E6C6
P 9150 6350
F 0 "#PWR0115" H 9150 6100 50  0001 C CNN
F 1 "GND" H 9155 6177 50  0000 C CNN
F 2 "" H 9150 6350 50  0001 C CNN
F 3 "" H 9150 6350 50  0001 C CNN
	1    9150 6350
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR0116
U 1 1 5D85F1BB
P 9150 5350
F 0 "#PWR0116" H 9150 5200 50  0001 C CNN
F 1 "VCC" H 9167 5523 50  0000 C CNN
F 2 "" H 9150 5350 50  0001 C CNN
F 3 "" H 9150 5350 50  0001 C CNN
	1    9150 5350
	1    0    0    -1  
$EndComp
Wire Wire Line
	9750 4900 9750 5400
Wire Wire Line
	9750 6350 9150 6350
Connection ~ 9750 5400
Wire Wire Line
	9750 5400 9750 5900
Connection ~ 9750 5900
Wire Wire Line
	9750 5900 9750 6350
Connection ~ 9150 6350
NoConn ~ 10350 4900
NoConn ~ 10350 5400
NoConn ~ 10350 5900
$Comp
L Device:C C1
U 1 1 5D878F70
P 6250 5600
F 0 "C1" H 6365 5646 50  0000 L CNN
F 1 "0.1uF" H 6365 5555 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 6288 5450 50  0001 C CNN
F 3 "~" H 6250 5600 50  0001 C CNN
	1    6250 5600
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5D87B802
P 6700 5600
F 0 "C2" H 6815 5646 50  0000 L CNN
F 1 "0.1uF" H 6815 5555 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 6738 5450 50  0001 C CNN
F 3 "~" H 6700 5600 50  0001 C CNN
	1    6700 5600
	1    0    0    -1  
$EndComp
$Comp
L Device:C C3
U 1 1 5D87BF56
P 7150 5600
F 0 "C3" H 7265 5646 50  0000 L CNN
F 1 "0.1uF" H 7265 5555 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 7188 5450 50  0001 C CNN
F 3 "~" H 7150 5600 50  0001 C CNN
	1    7150 5600
	1    0    0    -1  
$EndComp
$Comp
L Device:C C4
U 1 1 5D87C4FC
P 7600 5600
F 0 "C4" H 7715 5646 50  0000 L CNN
F 1 "0.1uF" H 7715 5555 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 7638 5450 50  0001 C CNN
F 3 "~" H 7600 5600 50  0001 C CNN
	1    7600 5600
	1    0    0    -1  
$EndComp
$Comp
L Device:C C5
U 1 1 5D88637D
P 8050 5600
F 0 "C5" H 8165 5646 50  0000 L CNN
F 1 "0.1uF" H 8165 5555 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 8088 5450 50  0001 C CNN
F 3 "~" H 8050 5600 50  0001 C CNN
	1    8050 5600
	1    0    0    -1  
$EndComp
Connection ~ 6700 5450
Wire Wire Line
	6700 5450 7150 5450
Connection ~ 7150 5450
Wire Wire Line
	7150 5450 7350 5450
Connection ~ 7600 5450
Wire Wire Line
	7600 5450 8050 5450
Connection ~ 6700 5750
Wire Wire Line
	6700 5750 7150 5750
Connection ~ 7150 5750
Wire Wire Line
	7150 5750 7350 5750
Connection ~ 7600 5750
Wire Wire Line
	7600 5750 8050 5750
Text GLabel 6050 5450 0    50   Input ~ 0
VCC
Text GLabel 6050 5750 0    50   Input ~ 0
GND
Wire Wire Line
	6050 5450 6250 5450
Connection ~ 6250 5450
Wire Wire Line
	6250 5450 6450 5450
Connection ~ 6250 5750
Wire Wire Line
	6250 5750 6450 5750
Wire Wire Line
	6050 5750 6250 5750
$Comp
L power:GND #PWR0117
U 1 1 5D8AED3B
P 6450 5750
F 0 "#PWR0117" H 6450 5500 50  0001 C CNN
F 1 "GND" H 6455 5577 50  0000 C CNN
F 2 "" H 6450 5750 50  0001 C CNN
F 3 "" H 6450 5750 50  0001 C CNN
	1    6450 5750
	1    0    0    -1  
$EndComp
Connection ~ 6450 5750
Wire Wire Line
	6450 5750 6700 5750
$Comp
L power:VCC #PWR0118
U 1 1 5D8AF8FE
P 6450 5450
F 0 "#PWR0118" H 6450 5300 50  0001 C CNN
F 1 "VCC" H 6467 5623 50  0000 C CNN
F 2 "" H 6450 5450 50  0001 C CNN
F 3 "" H 6450 5450 50  0001 C CNN
	1    6450 5450
	1    0    0    -1  
$EndComp
Connection ~ 6450 5450
Wire Wire Line
	6450 5450 6700 5450
$Comp
L power:PWR_FLAG #FLG0101
U 1 1 5D8B04BC
P 7350 5450
F 0 "#FLG0101" H 7350 5525 50  0001 C CNN
F 1 "PWR_FLAG" H 7350 5623 50  0000 C CNN
F 2 "" H 7350 5450 50  0001 C CNN
F 3 "~" H 7350 5450 50  0001 C CNN
	1    7350 5450
	1    0    0    -1  
$EndComp
Connection ~ 7350 5450
Wire Wire Line
	7350 5450 7600 5450
$Comp
L power:PWR_FLAG #FLG0102
U 1 1 5D8B1088
P 7350 5750
F 0 "#FLG0102" H 7350 5825 50  0001 C CNN
F 1 "PWR_FLAG" H 7350 5923 50  0000 C CNN
F 2 "" H 7350 5750 50  0001 C CNN
F 3 "~" H 7350 5750 50  0001 C CNN
	1    7350 5750
	-1   0    0    1   
$EndComp
Connection ~ 7350 5750
Wire Wire Line
	7350 5750 7600 5750
Wire Wire Line
	2650 6600 2900 6600
NoConn ~ 1950 5750
NoConn ~ 1000 4300
NoConn ~ 1000 4400
NoConn ~ 1000 4500
NoConn ~ 1000 4600
NoConn ~ 1000 4700
NoConn ~ 1000 4800
$Comp
L Connector:Conn_Coaxial J2
U 1 1 5D8E16B2
P 2300 6800
F 0 "J2" V 2182 6900 50  0000 L CNN
F 1 "Conn_Coaxial" V 2273 6900 50  0000 L CNN
F 2 "Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal" H 2300 6800 50  0001 C CNN
F 3 " ~" H 2300 6800 50  0001 C CNN
	1    2300 6800
	0    1    1    0   
$EndComp
Wire Wire Line
	2300 6600 2650 6600
Wire Wire Line
	2100 6800 2100 7050
Wire Wire Line
	2100 7050 2650 7050
$Comp
L Connector:Conn_01x01_Male J3
U 1 1 5D931E57
P 5400 1650
F 0 "J3" H 5372 1582 50  0000 R CNN
F 1 "Conn_01x01_Male" H 5372 1673 50  0000 R CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical" H 5400 1650 50  0001 C CNN
F 3 "~" H 5400 1650 50  0001 C CNN
	1    5400 1650
	-1   0    0    1   
$EndComp
Text Notes 7100 950  0    50   ~ 0
Q - do we qualify IORQ at leas with TPB ? or does that mess up v R and W ?
$EndSCHEMATC
