PS501 datasheet(21/42 Pages) MICROCHIP

21 / 42 page

 2004 Microchip Technology Inc.

DS21818C-page 21

PS501

8.1.4

BatteryMode (0x03)

This function selects the various battery operational

modes and reports the battery’s capabilities, modes

and condition.

Bit 0: INTERNAL_CHARGE_CONTROLLER

Bit set indicates that the battery pack contains its own

internal charge controller. When the bit is set, this

optional

function

supported

and

the

CHARGE_CONTROLLER_ENABLED

bit

will

activated.

Bit 1: PRIMARY_BATTERY_SUPPORT

Bit set indicates that the battery pack has the ability to

act as either the primary or secondary battery in a sys-

tem. When the bit is set, this optional function is

supported and the PRIMARY_BATTERY bit will be

activated.

Bit 2-6: Reserved

Bit 7: CONDITION_FLAG

Bit set indicates that the battery is requesting a

conditioning cycle. This typically will consist of a full

charge to full discharge, back to full charge of the pack.

The battery will clear this flag after it detects that a

conditioning cycle has been completed.

Bit 8: CHARGE_CONTROLLER_ENABLED

Bit is set to enable the battery pack’s internal charge

controller. When this bit is cleared, the internal charge

controller is disabled (default). This bit is active only

when the INTERNAL_CHARGE_CONTROLLER bit is

set.

Bit 9: PRIMARY_BATTERY

Bit is set to enable a battery to operate as the primary

battery in a system. When this bit is cleared, the battery

operates in a secondary role (default). This bit is active

only when the PRIMARY_BATTERY_SUPPORT bit is

set.

Bit 10-12: Reserved

Bit 13: ALARM_MODE

Disables the Smart Battery’s transmission of the

BatteryStatus bits on an alarm condition. Will reset to

enabled after 60 seconds.

Bit 14: CHARGER_MODE

Enables or disables the Smart Battery’s transmission of

ChargingCurrent and ChargingVoltage messages to

the Smart Battery Charger. When set, the Smart

Battery

will

not

transmit

ChargingCurrent

and

ChargingVoltage values to the charger. When cleared,

the Smart Battery will transmit the ChargingCurrent

and ChargingVoltage values to the charger when

charging is desired.

Bit 15: CAPACITY_MODE

Indicates if capacity information will be reported in mA/

mAh or 10 mW/10 mWh. When set, the capacity informa-

tion will be reported in 10 mW/10 mWh. When cleared,

the capacity information will be reported in mA/mAh.

8.1.5

AtRate (0x04)

AtRate is a value of current or power that is

used by three

other

functions:

AtRateTimeToFull,

AtRateTimeToEmpty and AtRateOK:

• AtRateTimeToFull returns the predicted time to full

charge at the AtRate value of charge current.

• AtRateTimeToEmpty function returns the

predicted operating time at the AtRate value of

discharge current.

•AtRateOK function returns a Boolean value that

predicts the battery’s ability to supply the AtRate

value of additional discharge current for

10 seconds.

8.1.6

AtRateTimeToFull (0x05)

Returns the predicted remaining time to fully charge the

battery at the AtRate value (mA). The AtRateTimeToFull

function is part of a two-function call set used to deter-

mine the predicted remaining charge time at the AtRate

value in mA. It will be used immediately after the SMBus

Host sets the AtRate value.

8.1.7

AtRateTimeToEmpty (0x06)

Returns the predicted remaining operating time if the

battery is discharged at the AtRate value. The

AtRateTimeToEmpty function is part of a two-function

call set used to determine the remaining operating time

at the AtRate value. It will be used immediately after the

SMBus Host sets the AtRate value.

8.1.8

AtRateOK (0x07)

Returns a Boolean value that indicates whether or not

the battery can deliver the AtRate value of additional

energy for 10 seconds (Boolean). If the AtRate value is

zero or positive, the AtRateOK function will always

return true. The AtRateOK function is part of a two-

function call set used by power management systems to

determine if the battery can safely supply enough energy

for an additional load. It will be used immediately after

the SMBus Host sets the AtRate value.

8.1.9

Temperature (0x08)

Returns the cell pack’s internal temperature in units of

0.1°K.

8.1.10

Voltage (0x09)

Returns the pack voltage (mV).

8.1.11

Current (0x0a)

Returns the current being supplied (or accepted)

through the battery’s terminals (mA).

PS501 数据表(PDF) 21 Page - Microchip Technology

PS501 数据表(HTML) 21 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

数据表下载