EMC1001-1-AFZQ-TR SMSC, EMC1001-1-AFZQ-TR Datasheet - Page 15

• Manufacturer Part Number: EMC1001-1-AFZQ-TR
• Description: Board Mount Temperature Sensors SMBus Temp Snsr
• Manufacturer: SMSC

Specifications of EMC1001-1-AFZQ-TR

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

1.5°C SMBus Temperature Sensor in Miniature SOT-23
Datasheet
SMSC EMC1001
4.10
4.11
4.12
4.13
The user can configure high and low temperature limits and an independent THERM limit. The
temperature high limit (T
and the Temperature High Limit Low Byte register. The Temperature High Limit Low Byte register
contains the two least significant bits as shown in
are stored in the upper two bits of the register, and the six LSB positions of this register always read
zero.
The temperature low limit (T
register and the Temperature Low Limit Low Byte register as shown in
The limits are compared to the temperature measurement results (T
(T
register and the
The THERM limit (T
limit asserts the
ALERT
The THERM hysteresis register holds a hysteresis value that determines the de-assertion of
as shown in
power up. When the
impacts the de-assertion of
Writing to the one-shot register while in standby mode initiates a conversion and comparison cycle.
The EMC1001 will execute a temperature measurement, compare the data to the limit registers and
return to the standby mode. A write to the one-shot register will be ignored if it occurs while the
EMC1001 is in run mode.
The EMC1001 has an SMBus timeout feature. Bit 7 of the SMBus Timeout Enable register enables
this function when set to 1 (the default setting is 0). When this feature is enabled, the SMBus will
timeout after approximately 25ms of inactivity.
Limit Registers
THERM Hysteresis Register
One-Shot Register
SMBus Timeout Enable
INT
≤ T
/
THERM2
L
or T
Figure 4.4 on page
INT
pin is configured as
ALERT
> T
ADDR
TH
) is a single byte value set by the THERM Limit register. Exceeding the THERM
ALERT
H
/
THERM2
H
). If either limit is exceeded then the appropriate bit is set high in the status
) is a 10-bit value that is set by the Temperature High Limit High Byte register
/
THERM
THERM2.
/
L
THERM2
) is a 10-bit value that is set by the Temperature Low Limit High Byte
output will respond as described in
12. It defaults to 10
DATASHEET
signal as described in
THERM2
pin is configured as
15
, then exceeding the high limit asserts this pin.
Table 4.2 on page
°
C and can be set by the user at any time after
THERM2
Section 4.4 on page
Section 4.3 on page
, then the hysteresis value also
11. The two least significant bits
INT
Table 4.2 on page
) and have been exceeded if
Revision 1.6 (01-29-07)
11. When the
11.
11.
THERM