The PIC14C000 comes with several peripherals specif- ically aimed at the battery market. The programmable reference and onboard comparators are useful for cre- ating charge control circuits, while the analog-to-digital (A/D) converter can monitor the charge state to prevent overcharge. The control software is written in “C” for maintainability and transportability. Where necessary, in line assembly is used.M Lead-Acid Battery Charger Implementation Using PIC14C000 AN626 Author: Dan Butler THEORY OF OPERATION Microchip Technology Inc. Charge current is controlled by a comparator and pro- grammable reference onboard the PIC14C000. The INTRODUCTION other side of the comparator is fed by the voltage across a sense resistor. The output of the comparator The PIC14C000 comes with several peripherals specif- ……