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Roman Krupnin 90e6151613 init repo
2025-01-28 19:17:01 +03:00

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EESchema Schematic File Version 2
LIBS:Gigatron-parts
LIBS:Gigatron-rescue
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:MJ-3536N
LIBS:54819-0519
LIBS:wickerlib
LIBS:Gigatron-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 8
Title "Gigatron Power, Clock and Reset"
Date "2020-03-20"
Rev "Release"
Comp "Marcel van Kervinck and Walter Belgers"
Comment1 "(POR) supervisory circuit holds /RESET low for 350ms during power up and brown outs."
Comment2 "clock phase. This is useful for the /WE pulse derived from it. (3) The Power-On Reset"
Comment3 "(2) The oscillator generates 6.25MHz square waves. The HCT-inverter gives a long 2nd"
Comment4 "(1) Power comes from the +5V that a USB charger provides. The data lines are not used."
$EndDescr
Text Notes 5300 3800 0 60 ~ 0
Inverter \n(for long ɸ2)
$Comp
L R R1
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F 1 "1M" V 3750 3400 50 0000 C CNN
F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3680 3400 50 0001 C CNN
F 3 "" H 3750 3400 50 0001 C CNN
1 3750 3400
0 1 1 0
$EndComp
Text Notes 3400 3100 0 60 ~ 0
Pierce oscillator
$Comp
L R R2
U 1 1 5973ED15
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F 0 "R2" V 4280 4450 50 0000 C CNN
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F 3 "" H 4200 4450 50 0001 C CNN
1 4200 4450
-1 0 0 1
$EndComp
$Comp
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F 3 "" H 4200 5250 50 0001 C CNN
1 4200 5250
1 0 0 -1
$EndComp
$Comp
L C C1
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P 3300 5250
F 0 "C1" H 3325 5350 50 0000 L CNN
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F 3 "" H 3300 5250 50 0001 C CNN
1 3300 5250
1 0 0 -1
$EndComp
$Comp
L C C3
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F 3 "" H 6900 4450 50 0001 C CNN
1 6900 4450
1 0 0 -1
$EndComp
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L GND #PWR01
U 1 1 5973EF88
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F 3 "" H 6900 4600 50 0001 C CNN
1 6900 4600
1 0 0 -1
$EndComp
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L GND #PWR02
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F 0 "#PWR02" H 4200 5150 50 0001 C CNN
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F 3 "" H 4200 5400 50 0001 C CNN
1 4200 5400
1 0 0 -1
$EndComp
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L GND #PWR03
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P 3300 5400
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F 2 "" H 3300 5400 50 0001 C CNN
F 3 "" H 3300 5400 50 0001 C CNN
1 3300 5400
1 0 0 -1
$EndComp
Text Notes 4500 3800 0 60 ~ 0
Buffer
Text Notes 6700 3800 0 60 ~ 0
Delay line
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L Crystal Y1
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F 1 "6.25MHz/30pF" H 3750 4650 50 0000 C CNN
F 2 "Crystals:Crystal_HC49-U_Vertical" H 3750 4800 50 0001 C CNN
F 3 "" H 3750 4800 50 0001 C CNN
1 3750 4800
1 0 0 -1
$EndComp
Text GLabel 8100 3400 2 60 Output ~ 0
CLK1
Text GLabel 8100 4100 2 60 Output ~ 0
CLK2
Text Notes 8100 3200 0 60 ~ 0
To instruction fetch and control unit\nPC, IR, D, ~WE~
Text Notes 8100 3900 0 60 ~ 0
To user registers\nAC, X, Y, OUT
Text Notes 6250 5400 0 60 ~ 0
The 47pF of C3 provides an additional CLK2-CLK1 shift of\n5ns, which is required when using the original 70ns SRAM\nat 6.25MHz, or when overclocking in general. (It is not\nneeded when using a 55ns SRAM module at 6.25MHz.)
NoConn ~ 1400 1800
NoConn ~ 1400 1900
NoConn ~ 1400 2000
Text Label 11100 1600 2 60 ~ 0
VCC
Text Label 11100 2200 2 60 ~ 0
GND
Text GLabel 3250 2300 2 60 Output ~ 0
L
Text GLabel 3250 1500 2 60 Output ~ 0
H
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F 3 "" H 2050 1600 50 0001 C CNN
1 2050 1600
0 1 1 0
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F 3 "" H 2600 1900 50 0001 C CNN
1 2600 1900
0 1 1 0
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F 3 "" H 2950 1900 50 0001 C CNN
1 2950 1900
1 0 0 -1
$EndComp
Text Notes 1500 1200 0 60 ~ 0
Multifuse F1 helps protect\nthe upstream power supply\nagainst faults/shorts in the\ncomputer (e.g. those caused\nby build errors or abuse)
Text Label 1500 1600 2 60 ~ 0
+5V
Text GLabel 5550 6700 2 60 Output ~ 0
~RST
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1 1700 2200
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1 2900 6700
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Text Notes 5250 6500 0 60 ~ 0
To program counter PC
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F 3 "" H 4550 7100 50 0001 C CNN
1 4550 7100
-1 0 0 1
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F 3 "" H 5050 7100 50 0001 C CNN
1 5050 7100
0 -1 -1 0
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F 3 "" H 5550 7100 50 0001 C CNN
1 5550 7100
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1 3500 6700
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1 4800 1900
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Text Notes 5400 1200 0 60 ~ 0
A decoupling (or bypass) capacitor in close proximity to every IC's power\npin provides transient current when switching between logic levels.\n
Text Notes 4200 7400 0 60 ~ 0
Power OK indicator
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$Comp
L 74HCT04 U1
U 4 1 598F7847
P 7350 4100
F 0 "U1" H 7545 4215 50 0000 C CNN
F 1 "74HCT04" H 7540 3975 50 0000 C CNN
F 2 "Kicad:DIP-14-MvK" H 7350 4100 50 0001 C CNN
F 3 "" H 7350 4100 50 0001 C CNN
4 7350 4100
1 0 0 -1
$EndComp
$Comp
L 74HCT04 U1
U 6 1 598F78D5
P 4650 4100
F 0 "U1" H 4845 4215 50 0000 C CNN
F 1 "74HCT04" H 4840 3975 50 0000 C CNN
F 2 "Kicad:DIP-14-MvK" H 4650 4100 50 0001 C CNN
F 3 "" H 4650 4100 50 0001 C CNN
6 4650 4100
1 0 0 -1
$EndComp
Text Notes 650 1050 0 60 ~ 0
Power
Text Notes 600 4100 0 60 ~ 0
Clock
Text Notes 600 6700 0 60 ~ 0
Reset
Text Notes 2100 2700 0 60 ~ 0
Zener diode D1 protects\nthe circuit against reverse\ncurrent and overvoltage
$Comp
L PWR_FLAG #FLG09
U 1 1 597EE60C
P 1700 1600
F 0 "#FLG09" H 1700 1675 50 0001 C CNN
F 1 "PWR_FLAG" H 1700 1750 50 0000 C CNN
F 2 "" H 1700 1600 50 0001 C CNN
F 3 "" H 1700 1600 50 0001 C CNN
1 1700 1600
1 0 0 -1
$EndComp
$Comp
L C C37
U 1 1 59BE4B9E
P 9800 1900
F 0 "C37" H 9825 2000 50 0000 L CNN
F 1 ".1µ" H 9825 1800 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 9838 1750 50 0001 C CNN
F 3 "" H 9800 1900 50 0001 C CNN
1 9800 1900
1 0 0 -1
$EndComp
$Comp
L C C38
U 1 1 59BE4C46
P 10000 1900
F 0 "C38" H 10025 2000 50 0000 L CNN
F 1 ".1µ" H 10025 1800 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 10038 1750 50 0001 C CNN
F 3 "" H 10000 1900 50 0001 C CNN
1 10000 1900
1 0 0 -1
$EndComp
$Comp
L C C39
U 1 1 59BE4CEF
P 10200 1900
F 0 "C39" H 10225 2000 50 0000 L CNN
F 1 ".1µ" H 10225 1800 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 10238 1750 50 0001 C CNN
F 3 "" H 10200 1900 50 0001 C CNN
1 10200 1900
1 0 0 -1
$EndComp
$Comp
L C C40
U 1 1 59BE4D9D
P 10400 1900
F 0 "C40" H 10425 2000 50 0000 L CNN
F 1 ".1µ" H 10425 1800 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 10438 1750 50 0001 C CNN
F 3 "" H 10400 1900 50 0001 C CNN
1 10400 1900
1 0 0 -1
$EndComp
$Comp
L C C41
U 1 1 59BE4E4C
P 10600 1900
F 0 "C41" H 10625 2000 50 0000 L CNN
F 1 ".1µ" H 10625 1800 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 10638 1750 50 0001 C CNN
F 3 "" H 10600 1900 50 0001 C CNN
1 10600 1900
1 0 0 -1
$EndComp
$Comp
L C C42
U 1 1 59BE4EFE
P 10800 1900
F 0 "C42" H 10825 2000 50 0000 L CNN
F 1 ".1µ" H 10825 1800 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 10838 1750 50 0001 C CNN
F 3 "" H 10800 1900 50 0001 C CNN
1 10800 1900
1 0 0 -1
$EndComp
Wire Wire Line
5100 4600 5100 4100
Connection ~ 5100 4100
Wire Wire Line
3600 3400 3300 3400
Wire Wire Line
3300 3400 3300 5100
Wire Wire Line
3900 3400 4200 3400
Wire Wire Line
4200 3400 4200 4300
Connection ~ 4200 4100
Wire Wire Line
4200 4600 4200 5100
Wire Wire Line
6900 4100 6900 4300
Connection ~ 4200 4800
Connection ~ 3300 4100
Connection ~ 6900 4100
Wire Wire Line
3900 4800 4200 4800
Wire Wire Line
3600 4800 3300 4800
Connection ~ 3300 4800
Wire Wire Line
7800 4100 8100 4100
Wire Wire Line
1400 1600 1900 1600
Wire Wire Line
2600 1600 2600 1750
Connection ~ 2600 1600
Wire Wire Line
2600 2200 2600 2050
Connection ~ 2600 2200
Wire Wire Line
3150 1600 3150 1500
Wire Wire Line
3150 1500 3250 1500
Connection ~ 3150 1600
Wire Wire Line
3150 2200 3150 2300
Wire Wire Line
3150 2300 3250 2300
Connection ~ 3150 2200
Wire Wire Line
2950 1600 2950 1750
Connection ~ 2950 1600
Wire Wire Line
2950 2200 2950 2050
Connection ~ 2950 2200
Connection ~ 1700 1600
Connection ~ 1700 2200
Wire Wire Line
4100 6700 5550 6700
Wire Wire Line
4200 6700 4200 7100
Wire Wire Line
4200 7100 4400 7100
Connection ~ 4200 6700
Wire Wire Line
4700 7100 4900 7100
Connection ~ 2400 1600
Wire Wire Line
3600 1600 3600 1750
Connection ~ 3600 1600
Wire Wire Line
3800 1600 3800 1750
Connection ~ 3800 1600
Wire Wire Line
4000 1600 4000 1750
Connection ~ 4000 1600
Wire Wire Line
4200 1600 4200 1750
Connection ~ 4200 1600
Wire Wire Line
4400 1600 4400 1750
Connection ~ 4400 1600
Wire Wire Line
4600 1600 4600 1750
Connection ~ 4600 1600
Wire Wire Line
4800 1600 4800 1750
Connection ~ 4800 1600
Wire Wire Line
5000 1600 5000 1750
Connection ~ 5000 1600
Wire Wire Line
5200 1600 5200 1750
Connection ~ 5200 1600
Wire Wire Line
5400 1600 5400 1750
Connection ~ 5400 1600
Wire Wire Line
5600 1600 5600 1750
Connection ~ 5600 1600
Wire Wire Line
5800 1600 5800 1750
Connection ~ 5800 1600
Wire Wire Line
6000 1600 6000 1750
Connection ~ 6000 1600
Wire Wire Line
6200 1600 6200 1750
Connection ~ 6200 1600
Wire Wire Line
6400 1600 6400 1750
Connection ~ 6400 1600
Wire Wire Line
6600 1600 6600 1750
Connection ~ 6600 1600
Wire Wire Line
6800 1600 6800 1750
Connection ~ 6800 1600
Wire Wire Line
7000 1600 7000 1750
Connection ~ 7000 1600
Wire Wire Line
7200 1600 7200 1750
Connection ~ 7200 1600
Wire Wire Line
7400 1600 7400 1750
Connection ~ 7400 1600
Wire Wire Line
7600 1600 7600 1750
Connection ~ 7600 1600
Wire Wire Line
7800 1600 7800 1750
Connection ~ 7800 1600
Wire Wire Line
8000 1600 8000 1750
Connection ~ 8000 1600
Wire Wire Line
8200 1600 8200 1750
Connection ~ 8200 1600
Wire Wire Line
8400 1600 8400 1750
Connection ~ 8400 1600
Wire Wire Line
8600 1600 8600 1750
Connection ~ 8600 1600
Wire Wire Line
8800 1600 8800 1750
Connection ~ 8800 1600
Wire Wire Line
9000 1600 9000 1750
Connection ~ 9000 1600
Wire Wire Line
9200 1600 9200 1750
Wire Wire Line
9200 2200 9200 2050
Wire Wire Line
9000 2200 9000 2050
Connection ~ 9000 2200
Wire Wire Line
8800 2200 8800 2050
Connection ~ 8800 2200
Wire Wire Line
8600 2200 8600 2050
Connection ~ 8600 2200
Wire Wire Line
8400 2200 8400 2050
Connection ~ 8400 2200
Wire Wire Line
8200 2200 8200 2050
Connection ~ 8200 2200
Wire Wire Line
8000 2200 8000 2050
Connection ~ 8000 2200
Wire Wire Line
7800 2200 7800 2050
Connection ~ 7800 2200
Wire Wire Line
7600 2200 7600 2050
Connection ~ 7600 2200
Wire Wire Line
7400 2200 7400 2050
Connection ~ 7400 2200
Wire Wire Line
7200 2200 7200 2050
Connection ~ 7200 2200
Wire Wire Line
7000 2200 7000 2050
Connection ~ 7000 2200
Wire Wire Line
6800 2200 6800 2050
Connection ~ 6800 2200
Wire Wire Line
6600 2200 6600 2050
Connection ~ 6600 2200
Wire Wire Line
6400 2200 6400 2050
Connection ~ 6400 2200
Wire Wire Line
6200 2200 6200 2050
Connection ~ 6200 2200
Wire Wire Line
6000 2200 6000 2050
Connection ~ 6000 2200
Wire Wire Line
5800 2200 5800 2050
Connection ~ 5800 2200
Wire Wire Line
5600 2200 5600 2050
Connection ~ 5600 2200
Wire Wire Line
5400 2200 5400 2050
Connection ~ 5400 2200
Wire Wire Line
5200 2200 5200 2050
Connection ~ 5200 2200
Wire Wire Line
5000 2200 5000 2050
Connection ~ 5000 2200
Wire Wire Line
4800 2200 4800 2050
Connection ~ 4800 2200
Wire Wire Line
4600 2200 4600 2050
Connection ~ 4600 2200
Wire Wire Line
4400 2200 4400 2050
Connection ~ 4400 2200
Wire Wire Line
4200 2200 4200 2050
Connection ~ 4200 2200
Wire Wire Line
4000 2200 4000 2050
Connection ~ 4000 2200
Wire Wire Line
3800 2200 3800 2050
Connection ~ 3800 2200
Wire Wire Line
3600 2200 3600 2050
Connection ~ 3600 2200
Wire Wire Line
3400 2200 3400 2050
Connection ~ 3400 2200
Connection ~ 9200 1600
Connection ~ 9200 2200
Wire Wire Line
5200 7100 5550 7100
Wire Wire Line
2200 1600 11100 1600
Wire Wire Line
1400 2200 11100 2200
Wire Wire Line
9400 1750 9400 1600
Connection ~ 9400 1600
Wire Wire Line
9600 1750 9600 1600
Connection ~ 9600 1600
Wire Wire Line
9800 1750 9800 1600
Connection ~ 9800 1600
Wire Wire Line
10000 1750 10000 1600
Connection ~ 10000 1600
Wire Wire Line
10200 1750 10200 1600
Connection ~ 10200 1600
Wire Wire Line
10400 1750 10400 1600
Connection ~ 10400 1600
Wire Wire Line
10600 1750 10600 1600
Connection ~ 10600 1600
Wire Wire Line
10800 1750 10800 1600
Connection ~ 10800 1600
Wire Wire Line
9400 2050 9400 2200
Connection ~ 9400 2200
Wire Wire Line
9600 2050 9600 2200
Connection ~ 9600 2200
Wire Wire Line
9800 2050 9800 2200
Connection ~ 9800 2200
Wire Wire Line
10000 2050 10000 2200
Connection ~ 10000 2200
Wire Wire Line
10200 2050 10200 2200
Connection ~ 10200 2200
Wire Wire Line
10400 2050 10400 2200
Connection ~ 10400 2200
Wire Wire Line
10600 2050 10600 2200
Connection ~ 10600 2200
Wire Wire Line
10800 2050 10800 2200
Connection ~ 10800 2200
Wire Wire Line
3400 1750 3400 1600
Connection ~ 3400 1600
Wire Wire Line
1400 1700 1400 1600
Wire Wire Line
1400 2300 1200 2300
Wire Wire Line
1400 2100 1400 2300
Connection ~ 1400 2200
$Comp
L 54819-0519 J1
U 1 1 59C1861E
P 1100 1900
F 0 "J1" H 900 2250 50 0000 L BNN
F 1 "54819-0519" H 1100 1499 50 0000 L BNN
F 2 "54819-0519-MvK:54819-0519-MvK" H 1100 1900 50 0001 L BNN
F 3 "0.88 USD" H 1100 1900 50 0001 L BNN
F 4 "Good" H 1100 1900 50 0001 L BNN "Availability"
F 5 "54819-0519" H 1100 1900 50 0001 L BNN "MP"
F 6 "Molex" H 1100 1900 50 0001 L BNN "MF"
F 7 "USB On-The-Go %28OTG%29 Mini-B Receptacle%2C Right Angle%2C Through Hole Solder Tails and Shell Tabs%2C Lead-Free" H 1100 1900 50 0001 L BNN "Description"
F 8 "None" H 1100 1900 50 0001 L BNN "Package"
1 1100 1900
-1 0 0 -1
$EndComp
$Comp
L C C5
U 1 1 59EB61EB
P 3400 1900
F 0 "C5" H 3425 2000 50 0000 L CNN
F 1 ".1µ" H 3425 1800 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 3438 1750 50 0001 C CNN
F 3 "" H 3400 1900 50 0001 C CNN
1 3400 1900
1 0 0 -1
$EndComp
$Comp
L C C6
U 1 1 59EB62A4
P 3600 1900
F 0 "C6" H 3625 2000 50 0000 L CNN
F 1 ".1µ" H 3625 1800 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 3638 1750 50 0001 C CNN
F 3 "" H 3600 1900 50 0001 C CNN
1 3600 1900
1 0 0 -1
$EndComp
Connection ~ 6000 4100
Wire Wire Line
6000 3400 6000 4100
Wire Wire Line
6000 3400 8100 3400
NoConn ~ 6000 4600
Text Notes 5150 4950 0 60 ~ 0
Optional booster
$EndSCHEMATC
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