AS7331 datasheet(19/72 Pages) AMSOSRAM

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AS7331

Functional Description

Datasheet

• PUBLIC

DS001047

• v4-00 • 2023-Mar-24

│ 18

Figure 12:

State Machine of CONT Mode

The conversion time (TCONV) is determined by the content of the register CREG1:TIME (see

Figure 48). The rising edge of READY signalizes the end of each conversion and its available valid

results. Figure 48 shows the principle sequence for a measurement starting in CONT mode, while

waiting in the Measurement state shows IDLE:

OSR programming: 83h, start of conti

nuous measurement via OSR:SS = “1”, while the device is

already in measurement mode (OSR:DOS = 011b),

OSR programming: 03h, abortion of conti

nuous measurement via OSR:SS = “0” while pause

time (TBREAK) is already activated to get the last measurement results.

It is recommended to read the measurement results during the break between two consecutive

conversions. This pause time (TBREAK) can be configured in steps of 8

μs up to 2040 μs (Figure 53).

CONT

PAUSE

CONFIG

POWDOWN

PD = 0

MMODE = 0

SB = 0

PD = 0

MMODE = 0

SB = 0

M_IDLE

STANDBY

PD = 0

SS = 1

MMODE = 1

SB = 1

PD = 0

MMODE = 0

SB = 0

PD = 0

MMODE = 1

SB = 1

PD = 0

SS = 1

MMODE = 1

SB = 0

PD = 0

MMODE = 1

SB = 0

PD = 1

PD = 0

SS = 1

MMODE = 1

SB = 0

PD = 0

SS = 1

MMODE = 1

SB = 1

PD = 1

PD = 0

MMODE = 0

PD = 1

PD = 0

MMODE = 0

SB = 1

SS = 1

SB = 0

PD = 1

PD = 0

SS = 0

MMODE = 1

SB = 0

MMODE = 1

PD = 1

Power-up

PD = 0

MMODE = 0

SB = 0

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