ADT7320

Preliminary Technical Data

Rev. PrA | Page 10 of 24

DIN

0x08

0x20

DATA

SCLK

DOUT

CS

WAIT 240ms MINIMUM

FOR CONVERSION TO FINISH

Figure 12. Typical SPI One-Shot Write to Configuration Register Followed by a Read from the Temperature Value Register

ONE-SHOT MODE

Setting Bit 5 to 0 and Bit 6 to 1 of the configuration register

(Register Address 0x01) enables the one-shot mode. When

this mode is enabled, the ADT7320 immediately completes a

conversion and then goes into shutdown mode.

Wait for a minimum of 240 ms after writing to the one-shot

bits before reading back the temperature from the temperature

value register. This time ensures that the ADT7320 has time to

power up and complete a conversion.

The one-shot mode is useful when one of the circuit design

priorities is to reduce power consumption.

1 SPS MODE

In this mode, the part performs one measurement per second.

A conversion takes only 60 ms, and it remains in the idle state

for the remaining 940 ms period. This mode is enabled by

writing 1 to Bit 5 and 0 to Bit 6 of the configuration register

(Register Address 0x01).