Add real-time clock.

I copied the MCP7940N design from the Neotron-32 but changed
the chip to a SOIC-8.

Author: thejpster

Kicad/Neotron-Common-Hardware-cache.lib

@@ -429,6 +429,25 @@ X 1 1 0 0 100 U 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# Device_Battery_Cell
+#
+DEF Device_Battery_Cell BT 0 0 N N 1 F N
+F0 "BT" 100 100 50 H V L CNN
+F1 "Device_Battery_Cell" 100 0 50 H V L CNN
+F2 "" 0 60 50 V I C CNN
+F3 "" 0 60 50 V I C CNN
+DRAW
+S -90 70 90 60 0 1 0 F
+S -62 47 58 27 0 1 0 F
+P 2 0 1 0 0 30 0 0 N
+P 2 0 1 0 0 70 0 100 N
+P 2 0 1 10 20 135 60 135 N
+P 2 0 1 10 40 155 40 115 N
+X + 1 0 200 100 D 50 50 1 1 P
+X - 2 0 -100 100 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # Device_C
 #
 DEF Device_C C 0 10 N Y 1 F N
@@ -1397,6 +1416,33 @@ X ~ 2 300 0 200 L 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# Timer_MCP7940N-xP
+#
+DEF Timer_MCP7940N-xP U 0 20 Y Y 1 F N
+F0 "U" -250 350 50 H V C CNN
+F1 "Timer_MCP7940N-xP" 450 350 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS MCP7940N-xP MCP7940N-xSN MCP7940N-xST
+$FPLIST
+ SOIC*3.9x4.9mm*P1.27mm*
+ TSSOP*4.4x3mm*P0.65mm*
+ MSOP*3x3mm*P0.65mm*
+ DIP*W7.62mm*
+$ENDFPLIST
+DRAW
+S -300 300 300 -300 0 1 10 f
+X X1 1 400 100 100 L 50 50 1 1 I
+X X2 2 400 -100 100 L 50 50 1 1 O
+X VBAT 3 100 400 100 D 50 50 1 1 W
+X VSS 4 0 -400 100 U 50 50 1 1 W
+X SDA 5 -400 100 100 R 50 50 1 1 B
+X SCL 6 -400 200 100 R 50 50 1 1 I
+X MFP 7 -400 -100 100 R 50 50 1 1 C
+X VCC 8 0 400 100 D 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
 # power_+3.3V
 #
 DEF power_+3.3V #PWR 0 0 Y Y 1 F P
@@ -1458,6 +1504,21 @@ X +5VP 1 0 0 0 U 50 50 1 1 W N
 ENDDRAW
 ENDDEF
 #
+# power_+BATT
+#
+DEF power_+BATT #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "power_+BATT" 0 140 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 2 0 1 0 -30 50 0 100 N
+P 2 0 1 0 0 0 0 100 N
+P 2 0 1 0 0 100 30 50 N
+X +BATT 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
 # power_GND
 #
 DEF power_GND #PWR 0 0 Y Y 1 F P