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AS8510

Datasheet - Detailed Descr i p ti on

Figure 6. Normal Mode 2

7.4.3 Standby Mode1 (SBM1)

The low-power Standby Mode can be entered only through the STOP state. Transition to SBM1 mode occurs when the “START BIT” D0 of Mode

Control register MOD_CTL_REG in Table 33 is set to “1” and Mode Control Bits to “10” through SPI. In this mode the date rate is programmable

stable up to the next interrupt. The functionality is illustrated in Figure. During the period of Ta, only one data sample is made available and,

during the rest of the period, the device is maintained in STOP state to reduce power consumption. The microcontroller which receives the data

on the Interrupt, is also expected to be processing the data for a short time as shown clearly in the Figure 7 to ensure the overall low-power

consumption of the data acquisition and processing system.

Figure 7. Standby Mode 1

t

Sampling with f

I

V,I,T

V,I,T

V,I,T

V,I,T

V,I,T

INT

T INT

MCU

ADC

t

T

Start SBM1

sec.

sec.

V, I, T

T

T

V, I, T

MCU

conv

conv

conv

MCU

INT

Channel

DATA Register

DATA – A1

DATA – A0

DATA – A2

DATA – A3