BH1715FVC

Technical Note

7/16

www.rohm.com

2010.06 - Rev.B

© 2010 ROHM Co., Ltd. All rights reserved.

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Measurement sequence example from "Write instruction" to "Read measurement result"

ex1) Continuously H-resolution mode (ADDR = 'L')

①

Send "Continuously H-resolution mode " instruction

ST

0100011

0

Ack

00010000

Ack

SP

②

Wait to complete 1st H-resolution mode measurement.(max. 180ms.)

③

Read measurement result.

ST

0100011

1

Ack

High Byte [ 15:8 ]

Ack

Low Byte [ 7:0 ]

Ack

SP

How to calculate when the data High Byte is "10000011" and Low Byte is "10010000"

(2

The result of continuously measurement mode is updated.(120ms.typ at H-resolution mode, 16ms.typ at L-resolution mode)

ex2) One time L-resolution mode (ADDR = 'H')

①

Send "One time L-resolution mode " instruction

ST

1011100

0

Ack

00100011

Ack

SP

②

Wait to complete L-resolution mode measurement.(max. 24ms.)

③

Read measurement result

ST

1011100

1

Ack

High Byte [ 15:8 ]

Ack

Low Byte [ 7:0 ]

Ack

SP

How to calculate when the data High Byte is "00000001" and Low Byte is "00010000"

(2

In one time measurement, Statement moves to power down mode after measurement completion. If updated result is

need then please resend measurement instruction.

from Master to Slave

from Slave to Master