PS700 datasheet(19/38 Pages) MICROCHIP

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 2004 Microchip Technology Inc.

DS21760F-page 19

PS700

4.4.10

Accumctrl – ACCUMULATOR CONTROL REGISTER

Accumctrl: ACCUMULATOR CONTROL REGISTER

(ADDRESS 63 HEX/99 DECIMAL)

Accum

Accl

AccT

AccV

tsel

Reserved

bit 7

bit 0

bit 7

Accum: Accumulator Master Enable bit

“Accum” is a master enable for Accl, AccT and AccV. If any combination of “Accl”, “AccT” and

“AccV” are enabled, Accum must also be enabled to permit accumulation. If “Accum” is ‘0’, no

accumulation will occur regardless of the settings in “Accl”, “AccT” and “AccV”.

= Accumulation enabled

= Accumulation disabled

bit 6

Accl: Current Accumulation Enable bit

When “AccI” is set to a ‘1’, current accumulation is enabled. The DCA and CCA registers will

periodically add the value of the Ires register. Also, the DCT and CCT elapsed time counter

registers will count during discharge and charge, respectively. When “AccI” is cleared to ‘0’,

current accumulation is disabled.

= Current accumulation enabled

= Current accumulation disabled

bit 5

AccT: Accumulate Temperature Enable bit

When “Acct” is set to a ‘1’, accumulation will be enabled in TA. TA will accumulate results from

the AD5 Result register and the TAT elapsed time counter will increment. When “Acct” is

cleared to ‘0’, TA accumulation will be disabled.

= Accumulate temperature enabled

= Accumulate temperature disabled

bit 4

AccV: Accumulate Voltage from VC2 Enable bit

When “AccV” is ‘0’, accumulation in TA will be updated by the VC1res register. When “AccV” is

‘1’, accumulation in TA will be updated by the VC2res register.

bit 3

tsel: Temperature Selection bit

When “tsel” is ‘0’, the internal temperature sensor is used for accumulation. When “tsel” is ‘1’,

the external temperature sensor is used for accumulation.

= External temperature sensor selected

= Internal temperature sensor selected

bit 2-0

Reserved: Reserved bit location

Legend:

‘1’ = Bit is set

‘0’ = Bit is cleared

R = Reserved bit

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