Serial communication interface system having programmable microc

Details Serial communication interface system having programmable microc Serial communication interface system having programmable microc

1995-10-13

1998-11-24

An, Meng-ai T.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

39575001, 395800, 395500, 320 21, 320 39, G06F 1300

Patent

active

058419969

ABSTRACT:
A microcontroller for use in battery charging and monitoring applications is disclosed. The microcontroller includes a microprocessor and various front-end analog circuitry such as a slope A/D converter and a multiplexer for allowing a plurality of analog input signals to be converted to corresponding digital counts indicative of signal level. The microcontroller also includes an I.sup.2 C interface for supporting a bi-directional two wire bus and data transmission protocol that is useful for serially communicating with other peripheral or microcontroller devices. By making use of the I.sup.2 C interface, the microcontroller can be programmed while in the end application circuit. Such a feature allows customers to manufacture boards with unprogrammed devices and then program the microcontroller just before shipping the product. This allows the most recent firmware or a custom firmware to be programmed.

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