User’s Manual
Appendix C. Power Supply
81
C.1 Power Supplies...................................................................................................................................81
C.1.1 Batteries and External Battery Connections...............................................................................81
C.1.2 Power to VRAM Switch.............................................................................................................83
C.1.3 Reset Generator ..........................................................................................................................83
C.2 Chip Select Circuit .............................................................................................................................84
Appendix D. Sample Circuits
85
D.1 RS-232/RS-485 Serial Communication .............................................................................................86
D.2 Keypad and LCD Connections ..........................................................................................................87
D.3 External Memory ...............................................................................................................................88
D.4 D/A Converter....................................................................................................................................89
Index
91
Schematics
93
