UCS2113 datasheet(46/62 Pages) MICROCHIP

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UCS2113

DS20005680B-page 46

 2016-2021 Microchip Technology Inc. and its subsidiaries

8.6

Total Accumulated Charge Registers

The Total Accumulated Charge registers store the total

accumulated charge delivered from the VS source to a

portable device. The bit weighting of the registers is

given in mA-hrs. The register value is reset to 00_00h

only when the RATION_RST bit is set or if the

RATION_EN bit is cleared. This value will be retained

when the device transitions out of the Active state and

resumes accumulation, if the device returns to the

Active state and charge rationing is still enabled.

These registers are updated every one (1) second

while the UCS2113 is in the Active power state. Every

time the value is updated, it is compared against the

target value in the Charge Rationing Threshold

registers. This data is retained in the Sleep state.

PORT1 TOTAL ACCUMULATED CHARGE REGISTERS (ADDRESS 16H, 17H,

18H, 19H)

R-0

TAC1<25:18>

bit 31

bit 24

R-0

TAC1<17:10>

bit 23

bit 16

R-0

TAC1<9:2>

bit 15

bit 8

R-0

U-0

TAC1<1:0>

—

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-6

TAC1<25:0>: Total Accumulated Charge Port 1 - Each LSB of this 26-bit value equals 0.00367 mAh

bit 5-0

Unimplemented: Read as ‘0’

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