AS8267 datasheet(66/136 Pages) AMSCO

Part #	AS8267

Description	Single-Phase 2-Current Energy Measurement Integrated Circuits with Microcontroller, RTC, Programmable Multi-Purpose I/Os

PDF	136 Pages

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Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

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66 / 136 page

Data Sheet AS8267 / AS8268

Revision 1.0, 19-Jun-07

Page 66 of 136

Procedure:

Status1 (951Fh): 80h

→ starts pulse counting.

When pulse counting is completed

→ CINT bit in Status1 = 1.

The status of the CINT bit in Status1 may be checked to confirm that the pulse counting is complete.

Alternatively, the time between 2 pulses may be calculated to determine the count cycle time (the first pulse is

used for synchronization and the second pulse starts the count cycle).

Following the pulse counting cycle, the number of pulses counted can be read from PCNT0/PCNT1/PCNT2

(951Bh/951Ch/951Dh).

The ideal number of pulses counted assuming the meter is perfectly calibrated would be:

000

600

000

Assuming that we count 11,000 pulses, the (Ideal) Pulse_lev must be changed by the factor:

10,000/11,000 = 0.909

The new Pulse_lev

= 1,193,804 x 0.909

= 1,085,168

⇒ 108EF0h

⇒ 932Ah: F0h

932Bh: 8Eh

932Ch: 10h

AS8267 Datasheet(PDF) 66 Page - ams AG