ATmega16HVB datasheet(154/273 Pages) ATMEL

Part #	ATmega16HVB

Description	8-bit Microcontroller with 16K/32K Bytes In-System Programmable Flash

PDF	273 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

Logo

154 / 273 page

154

8042A–AVR–07/09

ATmega16HVB/32HVB

26. Cell Balancing

26.1

Overview

ATmega16HVB/32HVB incorporates cell balancing FETs. The chip provides one cell balancing

FET for each battery cell in series. The FETs are directly controlled by the application software,

allowing the cell balancing algorithms to be implemented in software. The FETs are connected

in parallel with the individual battery cells. The cell balancing is illustrated in Figure 26-1. The fig-

ure shows a four-cell configuration. The cell balancing FETs are disabled in the Power-off mode.

For typical current through the Cell Balancing FETs, see ”Electrical Characteristics” on page

228.

The Cell Balancing FETs are controlled by the CBCR. Neighbouring FETs cannot be simultane-

ously enabled. If trying to enable two neighbouring FETs, both will be disabled.

Figure 26-1. Cell Balancing

Cell Balancing

Control Register

Level

Shift

Level

Shift

Level

Shift

Level

Shift

PV1

PV2

PV3

PV4

ATmega16HVB Datasheet(PDF) 154 Page - ATMEL Corporation