Add symbol for MCP3021 10-Bit A/D Converter with I2C Interface.

http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011709

library/microchip.dcm

@@ -174,6 +174,12 @@ K CAN Controller SPI
 F http://ww1.microchip.com/downloads/en/DeviceDoc/21801e.pdf
 $ENDCMP
 #
+$CMP MCP3021
+D Low-Power 10-Bit A/D Converter with I2C Interface
+K ADC I2C
+F http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011709
+$ENDCMP
+#
 $CMP MCP7940N
 D Real-Time Clock, I2C, Battery Backup
 K realtime clock RTC

library/microchip.lib

@@ -788,6 +788,26 @@ X ~RESET 19 600 -600 100 L 50 50 1 1 I
 ENDDRAW
 ENDDEF
 #
+# MCP3021
+#
+DEF MCP3021 U 0 40 Y Y 1 F N
+F0 "U" -300 350 50 H V L CNN
+F1 "MCP3021" 50 350 50 H V L CNN
+F2 "TO_SOT_Packages_SMD:SOT-23-5" 0 450 50 H I C CNN
+F3 "" -300 350 50 H I C CNN
+$FPLIST
+ SOT*23*5*
+$ENDFPLIST
+DRAW
+S -300 300 300 -300 0 1 10 f
+X VDD 1 0 400 100 D 50 50 1 1 W
+X VSS 2 0 -400 100 U 50 50 1 1 W
+X AIN 3 -400 0 100 R 50 50 1 1 I
+X SDA 4 400 100 100 L 50 50 1 1 B
+X SCL 5 400 -100 100 L 50 50 1 1 B
+ENDDRAW
+ENDDEF
+#
 # MCP7940N
 #
 DEF MCP7940N U 0 40 Y Y 1 F N