DA6021 datasheet(128/225 Pages) RENESAS

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DA6021

HIGHLY INTEGRATED POWER MANAGEMENT IC FOR

INTEL® ATOM™ Z3000 PROCESSOR

Company Confidential

Data Sheet

Version 3.A - Final

31-Jan-14

128 of 224

www.dialog-semiconductor.com

Vol

0.1

1mA source current

Cload

380

D,E

Trise

500

0V to Vih(min)

D,E

Tfall

500

Vpu to Vil(max)

D,E

Table 93: BATID Electrical Specification

Battery Presence Detection

14.2.3

Normally the BSI resistor will pull the voltage on the BATID line to a level that is lower than a set trip point. If the

battery is removed, the BATID node will be pulled high by the RMBI platform resistor which is typically in the

range of 30KΩ to 200KΩ. When this occurs, DA6021 detects that the battery is being removed (if configured).

The integrated 100ms de-bounce logic ensures there are no false removal alerts.

Depending on the DA6021 setting either a complete Cold Off sequence will be performed or an interrupt to the

SOC will be sent.

If the DBIEN bit be set, allowing digital battery communication mode to be entered on the BATID pin, the battery

presence logic is switched off to avoid battery removal detection. Prior to Digital Battery Communication,

DA6021 retains the last known BATID line voltage value in order to ensure that no false battery removal events

are reported.

BSI Sensing

14.2.4

DA6021 is able to detect the presence of the RBSI resistor as shown. The RBSI is a 1% resistor and can range

anywhere from 0 to 130kΩ. DA6021 is able to differentiate between different ID resistances (assuming standard

1% values over the aforementioned range).

Digital Battery Communications

14.2.5

DA6021 includes level shifting hardware that will take the single BATID line and convert it to two unidirectional

1.8V I/O signals, BATIDIN and BATIDOUT. The SOC will communicate with the battery digital interface via

DA6021 which is transparent and shifts the signals from the battery voltage domain to the 1.8V SOC domain.

GPIO0P1 and GPIO0P2 pins are used for this function.

Software, based on the value of the BSI resistance discovered, may choose to enable digital battery

communication.

Whenever digital communication is enabled (DBIEN bit in the BATDETCTRL register), DA6021 disables the

analog BATID presence sensing logic, and not falsely report removal events.

Parameter

Min

Nom

Max

Units

Notes

Val

Voltage (VDD)

1.71

1.8

1.89

At pin

Vil

0.3*VDD

Vih

0.7*VDD

Vhys

0.1

D,E

Vol

0.2*VDD

Voh

VDD-0.45

Trise

300

D,E

Tfall

300

D,E

Tr/Tf

Measurement Points

Table 94: Digital Battery Interface Specification

DA6021 Datasheet(PDF) 128 Page - Renesas Technology Corp

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