smart-home/display/hardware/display.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 4
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L power:+3.3V #PWR04
U 1 1 5C048760
P 2200 1400
F 0 "#PWR04" H 2200 1250 50  0001 C CNN
F 1 "+3.3V" H 2215 1573 50  0000 C CNN
F 2 "" H 2200 1400 50  0001 C CNN
F 3 "" H 2200 1400 50  0001 C CNN
	1    2200 1400
	1    0    0    -1  
$EndComp
Wire Wire Line
	1600 1500 2200 1500
Wire Wire Line
	2200 1500 2200 1400
$Comp
L power:+5V #PWR01
U 1 1 5C049D4B
P 1700 1100
F 0 "#PWR01" H 1700 950 50  0001 C CNN
F 1 "+5V" H 1715 1273 50  0000 C CNN
F 2 "" H 1700 1100 50  0001 C CNN
F 3 "" H 1700 1100 50  0001 C CNN
	1    1700 1100
	1    0    0    -1  
$EndComp
Wire Wire Line
	1600 1300 1700 1300
Wire Wire Line
	1700 1300 1700 1100
$Comp
L Device:C C16
U 1 1 5C4A551A
P 900 2950
F 0 "C16" H 1015 2996 50  0000 L CNN
F 1 "0.1uF/6.3V" H 1015 2905 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 938 2800 50  0001 C CNN
F 3 "~" H 900 2950 50  0001 C CNN
F 4 "C0603C105K4PACTU" H 900 2950 50  0001 C CNN "Mfg. ID"
F 5 "399-5090-1-ND" H 900 2950 50  0001 C CNN "Digikey"
	1    900  2950
	1    0    0    -1  
$EndComp
$Comp
L Device:C C17
U 1 1 5C4A5633
P 1500 3150
F 0 "C17" H 1615 3196 50  0000 L CNN
F 1 "0.1uF/6.3V" H 1615 3105 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1538 3000 50  0001 C CNN
F 3 "~" H 1500 3150 50  0001 C CNN
	1    1500 3150
	1    0    0    -1  
$EndComp
$Comp
L Device:C C18
U 1 1 5C4A5685
P 1700 2950
F 0 "C18" H 1815 2996 50  0000 L CNN
F 1 "0.1uF/6.3V" H 1815 2905 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1738 2800 50  0001 C CNN
F 3 "~" H 1700 2950 50  0001 C CNN
	1    1700 2950
	1    0    0    -1  
$EndComp
$Comp
L Device:C C19
U 1 1 5C4A56CD
P 2300 3150
F 0 "C19" H 2185 3196 50  0000 R CNN
F 1 "0.1uF/6.3V" H 2185 3105 50  0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2338 3000 50  0001 C CNN
F 3 "~" H 2300 3150 50  0001 C CNN
	1    2300 3150
	-1   0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR0101
U 1 1 5C4A9154
P 5800 1400
F 0 "#PWR0101" H 5800 1250 50  0001 C CNN
F 1 "+3.3V" H 5815 1573 50  0000 C CNN
F 2 "" H 5800 1400 50  0001 C CNN
F 3 "" H 5800 1400 50  0001 C CNN
	1    5800 1400
	1    0    0    -1  
$EndComp
Text Notes 1050 2550 0    50   ~ 0
place capacitors near MCU power pins
$Comp
L power:+3.3V #PWR0102
U 1 1 5C4A9BB7
P 900 2600
F 0 "#PWR0102" H 900 2450 50  0001 C CNN
F 1 "+3.3V" H 915 2773 50  0000 C CNN
F 2 "" H 900 2600 50  0001 C CNN
F 3 "" H 900 2600 50  0001 C CNN
	1    900  2600
	1    0    0    -1  
$EndComp
Connection ~ 5800 1500
Wire Wire Line
	5800 1500 5900 1500
Wire Wire Line
	5600 1500 5800 1500
Wire Wire Line
	5800 1400 5800 1500
Wire Wire Line
	900  2800 900  2700
Wire Wire Line
	900  2700 1500 2700
Wire Wire Line
	1700 2700 1700 2800
Connection ~ 900  2700
Wire Wire Line
	900  2700 900  2600
Wire Wire Line
	1700 2700 2300 2700
Wire Wire Line
	2300 2700 2300 3000
Connection ~ 1700 2700
Wire Wire Line
	1500 3000 1500 2700
Connection ~ 1500 2700
Wire Wire Line
	1500 2700 1700 2700
$Comp
L power:GND #PWR0103
U 1 1 5C4AE564
P 2300 3500
F 0 "#PWR0103" H 2300 3250 50  0001 C CNN
F 1 "GND" H 2305 3327 50  0000 C CNN
F 2 "" H 2300 3500 50  0001 C CNN
F 3 "" H 2300 3500 50  0001 C CNN
	1    2300 3500
	1    0    0    -1  
$EndComp
Wire Wire Line
	2300 3500 2300 3400
Wire Wire Line
	2300 3400 1700 3400
Wire Wire Line
	900  3400 900  3100
Connection ~ 2300 3400
Wire Wire Line
	2300 3400 2300 3300
Wire Wire Line
	1500 3400 1500 3300
Connection ~ 1500 3400
Wire Wire Line
	1500 3400 900  3400
Wire Wire Line
	1700 3100 1700 3400
Connection ~ 1700 3400
Wire Wire Line
	1700 3400 1500 3400
$Comp
L power:GND #PWR0104
U 1 1 5C4B14AE
P 5800 7000
F 0 "#PWR0104" H 5800 6750 50  0001 C CNN
F 1 "GND" H 5805 6827 50  0000 C CNN
F 2 "" H 5800 7000 50  0001 C CNN
F 3 "" H 5800 7000 50  0001 C CNN
	1    5800 7000
	1    0    0    -1  
$EndComp
Wire Wire Line
	5800 7000 5800 6900
Wire Wire Line
	5900 6900 5800 6900
Connection ~ 5800 6900
Wire Wire Line
	5800 6900 5600 6900
$Sheet
S 8250 2800 1050 1400
U 5E98FCAF
F0 "output" 50
F1 "output.sch" 50
F2 "GREEN" I L 8250 3200 50 
F3 "RED" I L 8250 3100 50 
F4 "BUZZER" I L 8250 2900 50 
F5 "BLUE" I L 8250 3300 50 
F6 "MOSI" I L 8250 3900 50 
F7 "SCK" I L 8250 4000 50 
F8 "DISP_~CS" I L 8250 3800 50 
F9 "DISP_~RST" I L 8250 3700 50 
F10 "DISP_D~C" I L 8250 3600 50 
F11 "DISP_~BUSY" I L 8250 3500 50 
F12 "DISP_~PWR" I L 8250 4100 50 
$EndSheet
Text Label 4150 2200 0    50   ~ 0
SWDCLK
NoConn ~ 4500 6200
NoConn ~ 4500 5200
NoConn ~ 4500 5100
Wire Wire Line
	5600 6900 5600 6800
Wire Wire Line
	5600 1600 5600 1500
Wire Wire Line
	5800 6900 5800 6800
Wire Wire Line
	5900 6800 5900 6900
Wire Wire Line
	5900 1500 5900 1600
Wire Wire Line
	5800 1600 5800 1500
$Comp
L MCU_NXP_Kinetis:MKL25Z128VLH4 U1
U 1 1 5C0737ED
P 5700 4200
F 0 "U1" H 4800 6650 50  0000 C CNN
F 1 "MKL25Z128VLH4" H 6400 1750 50  0000 C CNN
F 2 "Package_QFP:LQFP-64_10x10mm_P0.5mm" H 5950 1775 50  0001 L TNN
F 3 "http://www.nxp.com/docs/en/data-sheet/KL25P80M48SF0.pdf" H 6000 1500 50  0001 L BNN
F 4 "MKL25Z128VLH4-ND" H 5700 4200 50  0001 C CNN "Digikey PN"
F 5 "https://www.digikey.de/product-detail/de/nxp-usa-inc/MKL25Z128VLH4/MKL25Z128VLH4-ND/3831449" H 5700 4200 50  0001 C CNN "Digikey Link"
F 6 "MKL25Z128VLH4" H 5700 4200 50  0001 C CNN "Mfg. ID"
	1    5700 4200
	1    0    0    -1  
$EndComp
Text Label 4150 2500 0    50   ~ 0
SWDIO
$Sheet
S 8250 4400 900  2200
U 5E937ACB
F0 "input" 50
F1 "input.sch" 50
F2 "EN_ALS" I L 8250 4500 50 
F3 "ALS" O L 8250 4600 50 
F4 "MISO" O L 8250 5000 50 
F5 "SCK" I L 8250 4900 50 
F6 "MOSI" I L 8250 5100 50 
F7 "BME_~CS" I L 8250 4800 50 
F8 "SW_L1" O L 8250 6300 50 
F9 "SW_L2" O L 8250 6200 50 
F10 "SW_L3" O L 8250 6100 50 
F11 "SW_L4" O L 8250 6000 50 
F12 "SW_R1" O L 8250 5800 50 
F13 "SW_R2" O L 8250 5700 50 
F14 "SW_R3" O L 8250 5600 50 
F15 "SW_R4" O L 8250 5500 50 
F16 "SW_TOP" O L 8250 5300 50 
F17 "BME_~PWR" I L 8250 6500 50 
$EndSheet
NoConn ~ 1000 4600
NoConn ~ 1000 5000
NoConn ~ 1000 4900
Wire Wire Line
	900  4700 900  4800
Wire Wire Line
	1000 4700 900  4700
Wire Wire Line
	1000 4800 900  4800
$Comp
L power:GND #PWR0105
U 1 1 5EC3EAC5
P 900 4900
F 0 "#PWR0105" H 900 4650 50  0001 C CNN
F 1 "GND" H 905 4727 50  0000 C CNN
F 2 "" H 900 4900 50  0001 C CNN
F 3 "" H 900 4900 50  0001 C CNN
	1    900  4900
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_02x05_Odd_Even J1
U 1 1 5EC3255F
P 1200 4800
F 0 "J1" H 1250 5217 50  0000 C CNN
F 1 "SWD" H 1250 5126 50  0000 C CNN
F 2 "Connector_PinSocket_1.27mm:PinSocket_2x05_P1.27mm_Vertical" H 1200 4800 50  0001 C CNN
F 3 "~" H 1200 4800 50  0001 C CNN
F 4 "1175-1627-ND" H 1200 4800 50  0001 C CNN "Digikey PN"
F 5 "https://www.digikey.de/product-detail/de/cnc-tech/3220-10-0100-00/1175-1627-ND/3883661" H 1200 4800 50  0001 C CNN "Digikey Link"
	1    1200 4800
	1    0    0    -1  
$EndComp
Wire Wire Line
	1700 1700 1700 1800
Wire Wire Line
	1600 1700 1700 1700
$Comp
L power:GND #PWR02
U 1 1 5C048572
P 1700 1800
F 0 "#PWR02" H 1700 1550 50  0001 C CNN
F 1 "GND" H 1705 1627 50  0000 C CNN
F 2 "" H 1700 1800 50  0001 C CNN
F 3 "" H 1700 1800 50  0001 C CNN
	1    1700 1800
	1    0    0    -1  
$EndComp
$Sheet
S 750  1100 850  700 
U 5C043AB7
F0 "Power Supply" 50
F1 "power.sch" 50
F2 "EN_5V" I R 1600 1200 50 
F3 "5V" O R 1600 1300 50 
F4 "3V" O R 1600 1500 50 
F5 "GND" O R 1600 1700 50 
$EndSheet
NoConn ~ 1500 4800
NoConn ~ 1500 4900
NoConn ~ 5400 1600
Text Label 4200 3600 0    50   ~ 0
~RESET
Wire Wire Line
	4500 3600 4200 3600
Wire Wire Line
	4500 2200 4150 2200
Wire Wire Line
	4500 2500 4150 2500
Text Label 1850 4600 2    50   ~ 0
SWDIO
Text Label 1850 4700 2    50   ~ 0
SWDCLK
Text Label 1850 5000 2    50   ~ 0
~RESET
Wire Wire Line
	1850 4600 1500 4600
Wire Wire Line
	1500 4700 1850 4700
Wire Wire Line
	1850 5000 1500 5000
Text Notes 5300 700  2    50   ~ 0
TODO: Quartz?
Wire Wire Line
	8250 5800 6900 5800
Wire Wire Line
	8250 5700 6900 5700
Wire Wire Line
	8250 5600 6900 5600
Wire Wire Line
	8250 5500 6900 5500
Wire Wire Line
	8250 5100 7550 5100
Wire Wire Line
	7550 5100 7550 4600
Wire Wire Line
	7550 4600 6900 4600
Wire Wire Line
	8250 5000 7650 5000
Wire Wire Line
	7650 5000 7650 4500
Wire Wire Line
	7650 4500 6900 4500
Wire Wire Line
	8250 4900 7750 4900
Wire Wire Line
	7750 4900 7750 4400
Wire Wire Line
	7750 4400 6900 4400
Wire Wire Line
	8250 4600 7850 4600
Wire Wire Line
	7850 4600 7850 4700
Wire Wire Line
	7850 4700 7350 4700
Wire Wire Line
	7350 4700 7350 5400
Wire Wire Line
	7350 5400 6900 5400
Wire Wire Line
	8250 4500 7950 4500
Wire Wire Line
	7950 4500 7950 5200
Wire Wire Line
	7950 5200 7000 5200
Wire Wire Line
	7000 5200 7000 4800
Wire Wire Line
	7000 4800 6900 4800
Wire Wire Line
	8250 4800 8050 4800
Wire Wire Line
	8050 4800 8050 4300
Wire Wire Line
	8050 4300 7250 4300
Wire Wire Line
	7250 4300 7250 4900
Wire Wire Line
	7250 4900 6900 4900
Wire Wire Line
	7750 4400 7750 4000
Wire Wire Line
	7750 4000 8250 4000
Connection ~ 7750 4400
Wire Wire Line
	8250 3900 7550 3900
Wire Wire Line
	7550 3900 7550 4600
Connection ~ 7550 4600
Wire Wire Line
	8250 3800 7350 3800
Wire Wire Line
	7350 3800 7350 4200
Wire Wire Line
	7350 4200 6900 4200
Wire Wire Line
	8250 3700 7250 3700
Wire Wire Line
	7250 3700 7250 4100
Wire Wire Line
	6900 4100 7250 4100
Wire Wire Line
	8250 3600 7150 3600
Wire Wire Line
	7150 3600 7150 4000
Wire Wire Line
	7150 4000 6900 4000
Wire Wire Line
	8250 3500 7050 3500
Wire Wire Line
	7050 3500 7050 3900
Wire Wire Line
	7050 3900 6900 3900
Wire Wire Line
	8250 3300 6900 3300
Wire Wire Line
	8250 3200 6900 3200
Wire Wire Line
	8250 3100 6900 3100
Wire Wire Line
	900  4800 900  4900
Wire Wire Line
	8250 5300 7150 5300
Wire Wire Line
	7150 5300 7150 4300
Wire Wire Line
	7150 4300 6900 4300
Wire Wire Line
	8250 2900 8050 2900
Wire Wire Line
	8050 2900 8050 3000
Wire Wire Line
	8050 3000 6900 3000
Wire Wire Line
	7850 2900 6900 2900
Wire Wire Line
	7750 2800 6900 2800
Wire Wire Line
	7950 2700 6900 2700
Wire Wire Line
	6900 2400 7550 2400
NoConn ~ 4500 2400
NoConn ~ 4500 2600
NoConn ~ 4500 2700
NoConn ~ 4500 2800
NoConn ~ 4500 2900
NoConn ~ 4500 3400
NoConn ~ 4500 3500
NoConn ~ 4500 3800
NoConn ~ 4500 3900
NoConn ~ 4500 4000
NoConn ~ 4500 4100
NoConn ~ 4500 4600
NoConn ~ 6900 2200
NoConn ~ 6900 2300
Wire Wire Line
	1600 1200 2050 1200
Wire Wire Line
	2050 1200 2050 2300
Wire Wire Line
	2050 2300 4500 2300
Wire Wire Line
	8250 6000 8050 6000
Wire Wire Line
	8050 6000 8050 5900
Wire Wire Line
	8050 5900 6900 5900
Wire Wire Line
	6900 6000 7950 6000
Wire Wire Line
	7950 6000 7950 6100
Wire Wire Line
	7950 6100 8250 6100
Wire Wire Line
	8250 6200 7850 6200
Wire Wire Line
	7850 6200 7850 6100
Wire Wire Line
	7850 6100 6900 6100
Wire Wire Line
	6900 6200 7750 6200
Wire Wire Line
	7750 6200 7750 6300
Wire Wire Line
	7750 6300 8250 6300
Text Label 7850 6500 0    50   ~ 0
BME_~PWR
Wire Wire Line
	8250 6500 7850 6500
Text Label 4100 4900 0    50   ~ 0
BME_~PWR
Text Label 7850 4100 0    50   ~ 0
DISP_~PWR
Wire Wire Line
	8250 4100 7850 4100
Text Label 4100 4800 0    50   ~ 0
DISP_~PWR
Text Label 4100 4700 0    50   ~ 0
NRF_~PWR
Wire Wire Line
	4500 4900 4100 4900
Wire Wire Line
	4100 4800 4500 4800
Wire Wire Line
	4500 4700 4100 4700
Wire Wire Line
	7950 2200 7950 2700
Wire Wire Line
	7850 2100 7850 2900
Wire Wire Line
	7750 2000 7750 2800
Wire Wire Line
	7550 2400 7550 2300
Text Label 9450 1300 0    50   ~ 0
NRF_~PWR
Connection ~ 10000 1300
Wire Wire Line
	10000 1300 9450 1300
Wire Wire Line
	10400 800  10400 1100
Connection ~ 10400 800 
Wire Wire Line
	10000 800  10400 800 
Wire Wire Line
	10000 900  10000 800 
Wire Wire Line
	10000 1300 10000 1200
Wire Wire Line
	10100 1300 10000 1300
Wire Wire Line
	10400 700  10400 800 
$Comp
L Device:R R?
U 1 1 5EEDB0D9
P 10000 1050
AR Path="/5E98FCAF/5EEDB0D9" Ref="R?"  Part="1" 
AR Path="/5EEDB0D9" Ref="R33"  Part="1" 
F 0 "R33" H 9930 1004 50  0000 R CNN
F 1 "1M" H 9930 1095 50  0000 R CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 9930 1050 50  0001 C CNN
F 3 "~" H 10000 1050 50  0001 C CNN
	1    10000 1050
	-1   0    0    1   
$EndComp
$Comp
L Device:Q_PMOS_GSD Q?
U 1 1 5EEDB0D3
P 10300 1300
AR Path="/5E98FCAF/5EEDB0D3" Ref="Q?"  Part="1" 
AR Path="/5EEDB0D3" Ref="Q8"  Part="1" 
F 0 "Q8" H 10506 1346 50  0000 L CNN
F 1 "NX2301P" H 10506 1255 50  0000 L CNN
F 2 "" H 10500 1400 50  0001 C CNN
F 3 "~" H 10300 1300 50  0001 C CNN
F 4 " 1727-1148-1-ND" H 10300 1300 50  0001 C CNN "Digikey PN"
F 5 "https://www.digikey.de/product-detail/de/nexperia-usa-inc/NX2301P-215/1727-1148-1-ND/4162477" H 10300 1300 50  0001 C CNN "Digikey Link"
	1    10300 1300
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR?
U 1 1 5EEDB0CD
P 10400 700
AR Path="/5E98FCAF/5EEDB0CD" Ref="#PWR?"  Part="1" 
AR Path="/5EEDB0CD" Ref="#PWR03"  Part="1" 
F 0 "#PWR03" H 10400 550 50  0001 C CNN
F 1 "+3V3" H 10415 873 50  0000 C CNN
F 2 "" H 10400 700 50  0001 C CNN
F 3 "" H 10400 700 50  0001 C CNN
	1    10400 700 
	1    0    0    -1  
$EndComp
Wire Wire Line
	7550 2300 9900 2300
Wire Wire Line
	9800 2100 9900 2100
Wire Wire Line
	9800 2600 9900 2600
Wire Wire Line
	9900 2200 7950 2200
Wire Wire Line
	9900 2000 7750 2000
Wire Wire Line
	9500 2100 7850 2100
Wire Wire Line
	10400 2900 10400 3000
$Comp
L power:GND #PWR0106
U 1 1 5ED786AF
P 10400 3000
F 0 "#PWR0106" H 10400 2750 50  0001 C CNN
F 1 "GND" H 10405 2827 50  0000 C CNN
F 2 "" H 10400 3000 50  0001 C CNN
F 3 "" H 10400 3000 50  0001 C CNN
	1    10400 3000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R4
U 1 1 5ED77982
P 9650 2600
F 0 "R4" V 9443 2600 50  0000 C CNN
F 1 "1K" V 9534 2600 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 9580 2600 50  0001 C CNN
F 3 "~" H 9650 2600 50  0001 C CNN
	1    9650 2600
	0    1    1    0   
$EndComp
$Comp
L Device:R R3
U 1 1 5ED76FB5
P 9650 2100
F 0 "R3" V 9443 2100 50  0000 C CNN
F 1 "1K" V 9534 2100 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 9580 2100 50  0001 C CNN
F 3 "~" H 9650 2100 50  0001 C CNN
	1    9650 2100
	0    1    1    0   
$EndComp
$Comp
L NRF24L01_Breakout_SMD:NRF24L01_Breakout_SMD U2
U 1 1 5E7AFF0E
P 10400 2300
F 0 "U2" H 10780 2346 50  0000 L CNN
F 1 "NRF24L01_Breakout_SMD" H 10780 2255 50  0000 L CNN
F 2 "footprints:NRF24L01+breakout_SMD" H 10550 2900 50  0001 L CIN
F 3 "http://www.nordicsemi.com/eng/content/download/2730/34105/file/nRF24L01_Product_Specification_v2_0.pdf" H 10400 2200 50  0001 C CNN
	1    10400 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	6900 2600 9500 2600
Wire Wire Line
	6900 2500 9900 2500
$Comp
L power:PWR_FLAG #FLG01
U 1 1 5F038464
P 11000 1600
F 0 "#FLG01" H 11000 1675 50  0001 C CNN
F 1 "PWR_FLAG" V 11000 1728 50  0000 L CNN
F 2 "" H 11000 1600 50  0001 C CNN
F 3 "~" H 11000 1600 50  0001 C CNN
	1    11000 1600
	1    0    0    -1  
$EndComp
Wire Wire Line
	10400 1600 10400 1700
$Comp
L Device:C C2
U 1 1 5F04FA38
P 11000 1850
F 0 "C2" H 11115 1896 50  0000 L CNN
F 1 "10uF" H 11115 1805 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 11038 1700 50  0001 C CNN
F 3 "~" H 11000 1850 50  0001 C CNN
	1    11000 1850
	1    0    0    -1  
$EndComp
Wire Wire Line
	10400 1600 11000 1600
Wire Wire Line
	11000 1600 11000 1700
Connection ~ 11000 1600
Wire Wire Line
	10400 1600 10400 1500
Connection ~ 10400 1600
$Comp
L power:GND #PWR06
U 1 1 5F06B5A3
P 11000 2100
F 0 "#PWR06" H 11000 1850 50  0001 C CNN
F 1 "GND" H 11005 1927 50  0000 C CNN
F 2 "" H 11000 2100 50  0001 C CNN
F 3 "" H 11000 2100 50  0001 C CNN
	1    11000 2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	11000 2000 11000 2100
Connection ~ 900  4800
$EndSCHEMATC