W83L771ASG Datasheet, PDF (13/28 Pages) Nuvotem Talema – W83L771AWG W83L771ASG Nuvoton H/W Monitoring IC

W83L771AWG/W83L771ASG
7.4 T _ CRIT _ A Output and T_CRIT flags
T _ CRIT _ A Output pulls low when the measured temperature exceeds the critical temperature
(T_CRIT) defined in 19h, and 20h for Remote, and Local T_CRIT set point, respectively. Once the
T _ CRIT _ A Output pulls low, it will not be set high until the measured temperature is lower than
(T_CRIT － TH), where TH is Temperature Hysteresis. Status Register will not be reset until it is read
and the temperature conversion falls below the T_CRIT set point. The ALERT will also be asserted for
T_CRIT event, Figure 7.4 shows this mechanism. Please also refer to the W83L771AWG_773G_775G
Application Note 4.x.pdf for implementation.
T_CRIT# Set point
TH Value
T_CRIT - TH
Measured temperature by W83L771
W83L771 T_CRIT# pin
W83L771 T_CRIT status
W83L771 read command for
status register
W83L771 ALERT# pin
W83L771 status register read
ALERT Mask will be set
Fig. 7.4 Response of T _ CRIT _ A output
- 10 -
Publication Release Date: 2009/11/19
Version: 1.91