pato-z80-home-computer/pat80-computer/hardware/schematics/pat80/pat80.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A3 16535 11693
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text Notes 12250 10950 0    79   ~ 0
Pat80 Z80 home computer
Text Notes 13000 11050 0    50   ~ 0
2021-03-15
$Comp
L Memory_EEPROM:28C256 U3
U 1 1 604F6B81
P 6900 2000
F 0 "U3" V 6946 856 50  0000 R CNN
F 1 "256k (32k x 8) EEPROM" V 6855 856 50  0000 R CNN
F 2 "" H 6900 2000 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/doc0006.pdf" H 6900 2000 50  0001 C CNN
	1    6900 2000
	0    -1   -1   0   
$EndComp
Entry Wire Line
	4200 1850 4300 1950
Entry Wire Line
	4200 1950 4300 2050
Entry Wire Line
	4200 2050 4300 2150
Entry Wire Line
	4200 2150 4300 2250
Entry Wire Line
	4200 2250 4300 2350
Entry Wire Line
	4200 2350 4300 2450
Entry Wire Line
	4200 2450 4300 2550
Entry Wire Line
	4200 2550 4300 2650
Entry Wire Line
	4200 2650 4300 2750
Entry Wire Line
	4200 2750 4300 2850
Entry Wire Line
	4200 2850 4300 2950
Entry Wire Line
	4200 2950 4300 3050
Entry Wire Line
	4200 3050 4300 3150
Entry Wire Line
	4200 3150 4300 3250
Entry Wire Line
	4200 3250 4300 3350
Wire Bus Line
	4300 3350 5150 3350
Wire Wire Line
	3900 1750 4200 1750
Wire Wire Line
	3900 1850 4200 1850
Wire Wire Line
	3900 1950 4200 1950
Wire Wire Line
	3900 2050 4200 2050
Wire Wire Line
	3900 2150 4200 2150
Wire Wire Line
	3900 2250 4200 2250
Wire Wire Line
	3900 2350 4200 2350
Wire Wire Line
	3900 2450 4200 2450
Wire Wire Line
	3900 2550 4200 2550
Wire Wire Line
	3900 2650 4200 2650
Wire Wire Line
	3900 2750 4200 2750
Wire Wire Line
	3900 2850 4200 2850
Wire Wire Line
	3900 2950 4200 2950
Wire Wire Line
	3900 3050 4200 3050
Wire Wire Line
	3900 3150 4200 3150
Wire Wire Line
	3900 3250 4200 3250
Entry Wire Line
	6000 2500 5900 2600
Entry Wire Line
	6100 2500 6000 2600
Entry Wire Line
	6200 2500 6100 2600
Entry Wire Line
	6300 2500 6200 2600
Entry Wire Line
	6400 2500 6300 2600
Entry Wire Line
	6500 2500 6400 2600
Entry Wire Line
	6600 2500 6500 2600
Entry Wire Line
	6700 2500 6600 2600
Entry Wire Line
	6800 2500 6700 2600
Entry Wire Line
	6900 2500 6800 2600
Entry Wire Line
	7000 2500 6900 2600
Entry Wire Line
	7100 2500 7000 2600
Entry Wire Line
	7200 2500 7100 2600
Entry Wire Line
	7300 2500 7200 2600
Entry Wire Line
	7400 2500 7300 2600
Wire Wire Line
	6000 2400 6000 2500
Wire Wire Line
	6100 2400 6100 2500
Wire Wire Line
	6200 2400 6200 2500
Wire Wire Line
	6300 2400 6300 2500
Wire Wire Line
	6400 2400 6400 2500
Wire Wire Line
	6500 2400 6500 2500
Wire Wire Line
	6600 2400 6600 2500
Wire Wire Line
	6700 2400 6700 2500
Wire Wire Line
	6800 2400 6800 2500
Wire Wire Line
	6900 2400 6900 2500
Wire Wire Line
	7000 2400 7000 2500
Wire Wire Line
	7100 2400 7100 2500
Wire Wire Line
	7200 2400 7200 2500
Wire Wire Line
	7300 2400 7300 2500
Wire Wire Line
	7400 2400 7400 2500
Wire Bus Line
	5150 3350 5150 2600
Text Label 4000 1750 0    50   ~ 0
A0
Text Label 4000 1850 0    50   ~ 0
A1
Text Label 4000 1950 0    50   ~ 0
A2
Text Label 4000 2050 0    50   ~ 0
A3
Text Label 4000 2150 0    50   ~ 0
A4
Text Label 4000 2250 0    50   ~ 0
A5
Text Label 4000 2350 0    50   ~ 0
A6
Text Label 4000 2450 0    50   ~ 0
A7
Text Label 4000 2550 0    50   ~ 0
A8
Text Label 4000 2650 0    50   ~ 0
A9
Text Label 4000 2750 0    50   ~ 0
A10
Text Label 4000 2850 0    50   ~ 0
A11
Text Label 4000 2950 0    50   ~ 0
A12
Text Label 4000 3050 0    50   ~ 0
A13
Text Label 4000 3150 0    50   ~ 0
A14
Text Label 4000 3250 0    50   ~ 0
A15
Text Label 6000 2450 3    50   ~ 0
A0
Text Label 6100 2450 3    50   ~ 0
A1
Text Label 6200 2450 3    50   ~ 0
A2
Text Label 6300 2450 3    50   ~ 0
A3
Text Label 6400 2450 3    50   ~ 0
A4
Text Label 6500 2450 3    50   ~ 0
A5
Text Label 6600 2450 3    50   ~ 0
A6
Text Label 6700 2450 3    50   ~ 0
A7
Text Label 6800 2450 3    50   ~ 0
A8
Text Label 6900 2450 3    50   ~ 0
A9
Text Label 7000 2450 3    50   ~ 0
A10
Text Label 7100 2450 3    50   ~ 0
A11
Text Label 7200 2450 3    50   ~ 0
A12
Text Label 7300 2450 3    50   ~ 0
A13
Text Label 7400 2450 3    50   ~ 0
A14
Entry Wire Line
	6000 4050 5900 4150
Entry Wire Line
	6100 4050 6000 4150
Entry Wire Line
	6200 4050 6100 4150
Entry Wire Line
	6300 4050 6200 4150
Entry Wire Line
	6400 4050 6300 4150
Entry Wire Line
	6500 4050 6400 4150
Entry Wire Line
	6600 4050 6500 4150
Entry Wire Line
	6700 4050 6600 4150
Entry Wire Line
	6800 4050 6700 4150
Entry Wire Line
	6900 4050 6800 4150
Entry Wire Line
	7000 4050 6900 4150
Entry Wire Line
	7100 4050 7000 4150
Entry Wire Line
	7200 4050 7100 4150
Entry Wire Line
	7300 4050 7200 4150
Entry Wire Line
	7400 4050 7300 4150
Wire Wire Line
	6000 4050 6000 3950
Wire Wire Line
	6100 4050 6100 3950
Wire Wire Line
	6200 4050 6200 3950
Wire Wire Line
	6300 4050 6300 3950
Wire Wire Line
	6400 4050 6400 3950
Wire Wire Line
	6500 4050 6500 3950
Wire Wire Line
	6600 4050 6600 3950
Wire Wire Line
	6700 4050 6700 3950
Wire Wire Line
	6800 4050 6800 3950
Wire Wire Line
	6900 4050 6900 3950
Wire Wire Line
	7000 4050 7000 3950
Wire Wire Line
	7100 4050 7100 3950
Wire Wire Line
	7200 4050 7200 3950
Wire Wire Line
	7300 4050 7300 3950
Wire Wire Line
	7400 4050 7400 3950
Connection ~ 5150 3350
Text Label 6000 4000 3    50   ~ 0
A0
Text Label 6100 4000 3    50   ~ 0
A1
Text Label 6200 4000 3    50   ~ 0
A2
Text Label 6300 4000 3    50   ~ 0
A3
Text Label 6400 4000 3    50   ~ 0
A4
Text Label 6500 4000 3    50   ~ 0
A5
Text Label 6600 4000 3    50   ~ 0
A6
Text Label 6700 4000 3    50   ~ 0
A7
Text Label 6800 4000 3    50   ~ 0
A8
Text Label 6900 4000 3    50   ~ 0
A9
Text Label 7000 4000 3    50   ~ 0
A10
Text Label 7100 4000 3    50   ~ 0
A11
Text Label 7200 4000 3    50   ~ 0
A12
Text Label 7300 4000 3    50   ~ 0
A13
Text Label 7400 4000 3    50   ~ 0
A14
Entry Wire Line
	4200 3450 4300 3550
Entry Wire Line
	4200 3450 4300 3550
Entry Wire Line
	4200 3550 4300 3650
Entry Wire Line
	4200 3650 4300 3750
Entry Wire Line
	4200 3750 4300 3850
Entry Wire Line
	4200 3850 4300 3950
Entry Wire Line
	4200 3950 4300 4050
Entry Wire Line
	4200 4050 4300 4150
Entry Wire Line
	4200 4150 4300 4250
Wire Wire Line
	3900 3450 4200 3450
Wire Wire Line
	3900 3550 4200 3550
Wire Wire Line
	3900 3650 4200 3650
Wire Wire Line
	3900 3750 4200 3750
Wire Wire Line
	3900 3850 4200 3850
Wire Wire Line
	3900 3950 4200 3950
Wire Wire Line
	3900 4050 4200 4050
Wire Wire Line
	3900 4150 4200 4150
Wire Bus Line
	4300 4650 8650 4650
Entry Wire Line
	6000 3050 6100 2950
Entry Wire Line
	6200 2950 6100 3050
Entry Wire Line
	6300 2950 6200 3050
Entry Wire Line
	6400 2950 6300 3050
Entry Wire Line
	6500 2950 6400 3050
Entry Wire Line
	6600 2950 6500 3050
Entry Wire Line
	6700 2950 6600 3050
Entry Wire Line
	6800 2950 6700 3050
Wire Wire Line
	6000 3150 6000 3050
Wire Wire Line
	6100 3150 6100 3050
Wire Wire Line
	6200 3150 6200 3050
Wire Wire Line
	6300 3150 6300 3050
Wire Wire Line
	6400 3150 6400 3050
Wire Wire Line
	6500 3150 6500 3050
Wire Wire Line
	6600 3150 6600 3050
Wire Wire Line
	6700 3150 6700 3050
Wire Bus Line
	8650 2950 8650 4650
Entry Wire Line
	6100 1400 6000 1500
Entry Wire Line
	6200 1400 6100 1500
Entry Wire Line
	6300 1400 6200 1500
Entry Wire Line
	6400 1400 6300 1500
Entry Wire Line
	6500 1400 6400 1500
Entry Wire Line
	6600 1400 6500 1500
Entry Wire Line
	6700 1400 6600 1500
Entry Wire Line
	6800 1400 6700 1500
Wire Wire Line
	6000 1600 6000 1500
Wire Wire Line
	6100 1600 6100 1500
Wire Wire Line
	6200 1600 6200 1500
Wire Wire Line
	6300 1600 6300 1500
Wire Wire Line
	6400 1600 6400 1500
Wire Wire Line
	6500 1600 6500 1500
Wire Wire Line
	6600 1600 6600 1500
Wire Wire Line
	6700 1600 6700 1500
Wire Bus Line
	8650 1400 8650 2950
Connection ~ 8650 2950
Text Label 6000 1500 3    50   ~ 0
D0
Text Label 6100 1500 3    50   ~ 0
D1
Text Label 6200 1500 3    50   ~ 0
D2
Text Label 6300 1500 3    50   ~ 0
D3
Text Label 6400 1500 3    50   ~ 0
D4
Text Label 6500 1500 3    50   ~ 0
D5
Text Label 6600 1500 3    50   ~ 0
D6
Text Label 6700 1500 3    50   ~ 0
D7
Text Label 6000 3050 3    50   ~ 0
D0
Text Label 6100 3050 3    50   ~ 0
D1
Text Label 6200 3050 3    50   ~ 0
D2
Text Label 6300 3050 3    50   ~ 0
D3
Text Label 6400 3050 3    50   ~ 0
D4
Text Label 6500 3050 3    50   ~ 0
D5
Text Label 6600 3050 3    50   ~ 0
D6
Text Label 6700 3050 3    50   ~ 0
D7
Text Label 4000 3450 0    50   ~ 0
D0
Text Label 4000 3550 0    50   ~ 0
D1
Text Label 4000 3650 0    50   ~ 0
D2
Text Label 4000 3750 0    50   ~ 0
D3
Text Label 4000 3850 0    50   ~ 0
D4
Text Label 4000 3950 0    50   ~ 0
D5
Text Label 4000 4050 0    50   ~ 0
D6
Text Label 4000 4150 0    50   ~ 0
D7
Entry Wire Line
	4200 1750 4300 1850
$Comp
L Memory_EEPROM:28C256 U4
U 1 1 604FD5C5
P 6900 3550
F 0 "U4" V 6946 2406 50  0000 R CNN
F 1 "256k (32k x 8) SRAM" V 6855 2406 50  0000 R CNN
F 2 "" H 6900 3550 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/doc0006.pdf" H 6900 3550 50  0001 C CNN
	1    6900 3550
	0    -1   -1   0   
$EndComp
Wire Bus Line
	5150 4150 5150 3350
$Comp
L power:GND #PWR?
U 1 1 60507104
P 8000 2000
F 0 "#PWR?" H 8000 1750 50  0001 C CNN
F 1 "GND" H 8005 1827 50  0000 C CNN
F 2 "" H 8000 2000 50  0001 C CNN
F 3 "" H 8000 2000 50  0001 C CNN
	1    8000 2000
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6050737A
P 8000 3550
F 0 "#PWR?" H 8000 3300 50  0001 C CNN
F 1 "GND" H 8005 3377 50  0000 C CNN
F 2 "" H 8000 3550 50  0001 C CNN
F 3 "" H 8000 3550 50  0001 C CNN
	1    8000 3550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 605076F8
P 3200 4450
F 0 "#PWR?" H 3200 4200 50  0001 C CNN
F 1 "GND" H 3205 4277 50  0000 C CNN
F 2 "" H 3200 4450 50  0001 C CNN
F 3 "" H 3200 4450 50  0001 C CNN
	1    3200 4450
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR?
U 1 1 60507B8E
P 3200 950
F 0 "#PWR?" H 3200 800 50  0001 C CNN
F 1 "VCC" H 3217 1123 50  0000 C CNN
F 2 "" H 3200 950 50  0001 C CNN
F 3 "" H 3200 950 50  0001 C CNN
	1    3200 950 
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR?
U 1 1 60507E3C
P 5800 2000
F 0 "#PWR?" H 5800 1850 50  0001 C CNN
F 1 "VCC" H 5817 2173 50  0000 C CNN
F 2 "" H 5800 2000 50  0001 C CNN
F 3 "" H 5800 2000 50  0001 C CNN
	1    5800 2000
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR?
U 1 1 605080EF
P 5800 3550
F 0 "#PWR?" H 5800 3400 50  0001 C CNN
F 1 "VCC" H 5817 3723 50  0000 C CNN
F 2 "" H 5800 3550 50  0001 C CNN
F 3 "" H 5800 3550 50  0001 C CNN
	1    5800 3550
	1    0    0    -1  
$EndComp
$Comp
L power:VCC #PWR?
U 1 1 60508CD5
P 2350 4050
F 0 "#PWR?" H 2350 3900 50  0001 C CNN
F 1 "VCC" H 2367 4223 50  0000 C CNN
F 2 "" H 2350 4050 50  0001 C CNN
F 3 "" H 2350 4050 50  0001 C CNN
	1    2350 4050
	1    0    0    -1  
$EndComp
$Comp
L CPU:Z80CPU U1
U 1 1 604F040E
P 3200 2950
F 0 "U1" H 3200 4631 50  0000 C CNN
F 1 "Z80CPU" H 3200 4540 50  0000 C CNN
F 2 "" H 3200 3350 50  0001 C CNN
F 3 "www.zilog.com/manage_directlink.php?filepath=docs/z80/um0080" H 3200 3350 50  0001 C CNN
	1    3200 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	2500 2950 2350 2950
$Comp
L power:VCC #PWR?
U 1 1 6050EE1E
P 2350 2950
F 0 "#PWR?" H 2350 2800 50  0001 C CNN
F 1 "VCC" H 2367 3123 50  0000 C CNN
F 2 "" H 2350 2950 50  0001 C CNN
F 3 "" H 2350 2950 50  0001 C CNN
	1    2350 2950
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS32 U?
U 1 1 6051C888
P 1750 1750
F 0 "U?" H 1750 2075 50  0000 C CNN
F 1 "74LS32" H 1750 1984 50  0000 C CNN
F 2 "" H 1750 1750 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS32" H 1750 1750 50  0001 C CNN
	1    1750 1750
	1    0    0    -1  
$EndComp
$Comp
L Switch:SW_Push SW1
U 1 1 60528DA4
P 1000 2050
F 0 "SW1" V 1000 2002 50  0000 R CNN
F 1 "SW_Push" V 955 2002 50  0001 R CNN
F 2 "" H 1000 2250 50  0001 C CNN
F 3 "" H 1000 2250 50  0001 C CNN
	1    1000 2050
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C?
U 1 1 6052B4C4
P 1350 2050
F 0 "C?" H 1465 2096 50  0000 L CNN
F 1 "10uF" H 1465 2005 50  0000 L CNN
F 2 "" H 1388 1900 50  0001 C CNN
F 3 "~" H 1350 2050 50  0001 C CNN
	1    1350 2050
	1    0    0    -1  
$EndComp
Wire Wire Line
	1350 1900 1350 1750
Wire Wire Line
	1350 1750 1000 1750
Wire Wire Line
	1000 1750 1000 1850
Wire Wire Line
	1350 2200 1350 2250
$Comp
L power:VCC #PWR?
U 1 1 60530F78
P 1000 1200
F 0 "#PWR?" H 1000 1050 50  0001 C CNN
F 1 "VCC" H 1017 1373 50  0000 C CNN
F 2 "" H 1000 1200 50  0001 C CNN
F 3 "" H 1000 1200 50  0001 C CNN
	1    1000 1200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 605315B7
P 1000 2400
F 0 "#PWR?" H 1000 2150 50  0001 C CNN
F 1 "GND" H 1005 2227 50  0000 C CNN
F 2 "" H 1000 2400 50  0001 C CNN
F 3 "" H 1000 2400 50  0001 C CNN
	1    1000 2400
	1    0    0    -1  
$EndComp
Wire Wire Line
	1000 2250 1000 2400
Wire Wire Line
	1000 2250 1350 2250
Connection ~ 1000 2250
Wire Wire Line
	2050 1750 2500 1750
$Comp
L Device:C C?
U 1 1 6055A1F9
P 3600 950
F 0 "C?" V 3348 950 50  0000 C CNN
F 1 "100nF" V 3439 950 50  0000 C CNN
F 2 "" H 3638 800 50  0001 C CNN
F 3 "~" H 3600 950 50  0001 C CNN
	1    3600 950 
	0    1    1    0   
$EndComp
$Comp
L Device:C C?
U 1 1 6055A9DD
P 3600 1150
F 0 "C?" V 3348 1150 50  0000 C CNN
F 1 "56pF" V 3439 1150 50  0000 C CNN
F 2 "" H 3638 1000 50  0001 C CNN
F 3 "~" H 3600 1150 50  0001 C CNN
	1    3600 1150
	0    1    1    0   
$EndComp
Wire Wire Line
	3750 950  3750 1050
$Comp
L power:GND #PWR?
U 1 1 60567CC3
P 3850 1050
F 0 "#PWR?" H 3850 800 50  0001 C CNN
F 1 "GND" H 3855 877 50  0000 C CNN
F 2 "" H 3850 1050 50  0001 C CNN
F 3 "" H 3850 1050 50  0001 C CNN
	1    3850 1050
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 1050 3750 1050
Connection ~ 3750 1050
Wire Wire Line
	3750 1050 3750 1150
Wire Wire Line
	3200 950  3200 1050
Wire Wire Line
	3450 1150 3450 1050
Wire Wire Line
	3450 1050 3200 1050
Connection ~ 3450 1050
Wire Wire Line
	3450 1050 3450 950 
Connection ~ 3200 1050
Wire Wire Line
	3200 1050 3200 1450
Text Notes 3350 1350 0    50   ~ 0
Smoothing caps
Text Notes 800  2800 0    50   ~ 0
Reset circuit with debouncing\nand power-on-reset
$Comp
L Device:R R?
U 1 1 60584118
P 1000 1500
F 0 "R?" H 1070 1546 50  0000 L CNN
F 1 "270k" H 1070 1455 50  0000 L CNN
F 2 "" V 930 1500 50  0001 C CNN
F 3 "~" H 1000 1500 50  0001 C CNN
	1    1000 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	1000 1650 1000 1750
Connection ~ 1000 1750
Wire Wire Line
	1000 1350 1000 1200
Wire Wire Line
	2500 4050 2350 4050
Text Notes 15450 11050 0    50   ~ 0
0.1 alpha
Wire Wire Line
	1450 1650 1450 1750
Wire Wire Line
	1350 1750 1450 1750
Wire Bus Line
	6100 1400 8650 1400
Wire Bus Line
	6100 2950 8650 2950
Wire Bus Line
	4300 3550 4300 4650
Wire Bus Line
	4300 1850 4300 3350
Wire Bus Line
	5150 2600 7300 2600
Wire Bus Line
	5150 4150 7300 4150
Connection ~ 1350 1750
Connection ~ 1450 1750
Wire Wire Line
	1450 1750 1450 1850
$EndSCHEMATC