EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 1 1 Title "" Date "14 apr 2013" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L Memory_EPROM:27C256 U1 U 1 1 512A8D2F P 5800 2200 F 0 "U1" H 5650 3200 70 0000 C CNN F 1 "27C256AP-20" V 5800 2250 70 0000 C CNN F 2 "Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm" H 5800 2200 60 0001 C CNN F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/doc0014.pdf" H 5800 2200 60 0001 C CNN 1 5800 2200 1 0 0 -1 $EndComp $Comp L Memory_RAM:HM62256BLP U2 U 1 1 512A8D63 P 2400 2100 F 0 "U2" H 2100 3000 50 0000 C CNN F 1 "HM62256LFP-12T" V 2400 2100 50 0000 C CNN F 2 "Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm" H 2400 2100 30 0001 C CIN F 3 "https://web.mit.edu/6.115/www/document/62256.pdf" H 2400 2100 60 0001 C CNN 1 2400 2100 1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_02x20_Odd_Even P1 U 1 1 512A8DCA P 4050 4900 F 0 "P1" H 4050 5950 60 0000 C CNN F 1 "CONN_20X2" V 4100 4900 50 0000 C CNN F 2 "Connector_PCBEdge:Samtec_MECF-20-0_-NP-L-DV_2x20_P1.27mm_Edge" H 4050 4900 60 0001 C CNN F 3 "" H 4050 4900 60 0001 C CNN 1 4050 4900 1 0 0 -1 $EndComp $Comp L power:GND #PWR02 U 1 1 512A98AD P 3850 4000 F 0 "#PWR02" H 3850 4000 30 0001 C CNN F 1 "GND" H 3850 3930 30 0001 C CNN F 2 "" H 3850 4000 60 0001 C CNN F 3 "" H 3850 4000 60 0001 C CNN 1 3850 4000 1 0 0 -1 $EndComp $Comp L Device:Battery_Cell BT1 U 1 1 512A98E4 P 8750 5350 F 0 "BT1" H 8900 5350 50 0000 C CNN F 1 "BATTERY" H 8750 5160 50 0000 C CNN F 2 "" H 8750 5350 60 0001 C CNN F 3 "" H 8750 5350 60 0001 C CNN 1 8750 5350 1 0 0 -1 $EndComp Entry Wire Line 3200 1400 3300 1500 Entry Wire Line 3200 1500 3300 1600 Entry Wire Line 3200 1600 3300 1700 Entry Wire Line 3200 1700 3300 1800 Entry Wire Line 3200 1800 3300 1900 Entry Wire Line 3200 1900 3300 2000 Entry Wire Line 3200 2000 3300 2100 Entry Wire Line 3200 2100 3300 2200 Entry Wire Line 1350 2800 1450 2700 Entry Wire Line 1350 2700 1450 2600 Entry Wire Line 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4800 F 0 "#PWR0110" H 10350 4650 50 0001 C CNN F 1 "VCC" H 10365 4973 50 0000 C CNN F 2 "" H 10350 4800 50 0001 C CNN F 3 "" H 10350 4800 50 0001 C CNN 1 10350 4800 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0111 U 1 1 615D056E P 1300 6400 F 0 "#PWR0111" H 1300 6250 50 0001 C CNN F 1 "VCC" H 1315 6573 50 0000 C CNN F 2 "" H 1300 6400 50 0001 C CNN F 3 "" H 1300 6400 50 0001 C CNN 1 1300 6400 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0112 U 1 1 615D1223 P 4350 4000 F 0 "#PWR0112" H 4350 3850 50 0001 C CNN F 1 "VCC" H 4365 4173 50 0000 C CNN F 2 "" H 4350 4000 50 0001 C CNN F 3 "" H 4350 4000 50 0001 C CNN 1 4350 4000 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0113 U 1 1 615D1DB7 P 5800 1100 F 0 "#PWR0113" H 5800 950 50 0001 C CNN F 1 "VCC" H 5815 1273 50 0000 C CNN F 2 "" H 5800 1100 50 0001 C CNN F 3 "" H 5800 1100 50 0001 C CNN 1 5800 1100 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0114 U 1 1 615D26CC P 5400 2900 F 0 "#PWR0114" H 5400 2750 50 0001 C CNN F 1 "VCC" H 5415 3073 50 0000 C CNN F 2 "" H 5400 2900 50 0001 C CNN F 3 "" H 5400 2900 50 0001 C CNN 1 5400 2900 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0115 U 1 1 615F286A P 6500 5500 F 0 "#PWR0115" H 6500 5350 50 0001 C CNN F 1 "VCC" H 6515 5673 50 0000 C CNN F 2 "" H 6500 5500 50 0001 C CNN F 3 "" H 6500 5500 50 0001 C CNN 1 6500 5500 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0116 U 1 1 615F2CCE P 6150 6100 F 0 "#PWR0116" H 6150 5950 50 0001 C CNN F 1 "VCC" H 6165 6273 50 0000 C CNN F 2 "" H 6150 6100 50 0001 C CNN F 3 "" H 6150 6100 50 0001 C CNN 1 6150 6100 1 0 0 -1 $EndComp Wire Wire Line 6150 6100 6500 6100 $Comp L power:VCC #PWR0117 U 1 1 615FBD93 P 6450 4450 F 0 "#PWR0117" H 6450 4300 50 0001 C CNN F 1 "VCC" H 6465 4623 50 0000 C CNN F 2 "" H 6450 4450 50 0001 C CNN F 3 "" H 6450 4450 50 0001 C CNN 1 6450 4450 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0118 U 1 1 615FC2C4 P 6150 5050 F 0 "#PWR0118" H 6150 4900 50 0001 C CNN F 1 "VCC" H 6165 5223 50 0000 C CNN F 2 "" H 6150 5050 50 0001 C CNN F 3 "" H 6150 5050 50 0001 C CNN 1 6150 5050 1 0 0 -1 $EndComp Wire Wire Line 6150 5050 6450 5050 $Comp L power:GND #PWR0119 U 1 1 61551C34 P 8350 5450 F 0 "#PWR0119" H 8350 5450 30 0001 C CNN F 1 "GND" H 8350 5380 30 0001 C CNN F 2 "" H 8350 5450 60 0001 C CNN F 3 "" H 8350 5450 60 0001 C CNN 1 8350 5450 1 0 0 -1 $EndComp Connection ~ 8350 5450 $Comp L power:GND #PWR0120 U 1 1 6155285C P 9250 4250 F 0 "#PWR0120" H 9250 4250 30 0001 C CNN F 1 "GND" H 9250 4180 30 0001 C CNN F 2 "" H 9250 4250 60 0001 C CNN F 3 "" H 9250 4250 60 0001 C CNN 1 9250 4250 1 0 0 -1 $EndComp Connection ~ 9250 4250 Wire Wire Line 8750 4250 8750 4450 Wire Bus Line 4900 1300 4900 5900 Wire Bus Line 6700 1300 6700 3400 Wire Bus Line 1350 1400 1350 3400 Wire Bus Line 3300 1400 3300 7200 $EndSCHEMATC