EMC1002-2-ACZT-TR SMSC, EMC1002-2-ACZT-TR Datasheet - Page 11

• Manufacturer Part Number: EMC1002-2-ACZT-TR
• Description: Board Mount Temperature Sensors Dual Zone SMBus Temp Snsr
• Manufacturer: SMSC

Specifications of EMC1002-2-ACZT-TR

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

1°C Dual SMBus Sensor with Resistance Error Correction
Datasheet
SMSC EMC1002
4.5
B15
b10
B14
b9
ACTUAL TEMP.
ALERT/THERM2 Output
Note 4.1
Note 4.2
Note 4.3
Note 4.4
The 11-bit temperature data is stored with the 8 most significant bits stored in the High Byte register
and the 3 least significant bits in the Low Byte register. The Low Byte register contains the three least
significant bits as outlined in
and the five LSB positions of this register always read zero. In
the bit position of a 16-bit word created by concatenating the High Byte and Low Byte, and the lower
case “b” shows the bit position in the 11-bit temperature data. The resolution of the internal temperature
is 0.5
The
"Limit Registers," on page
resistor to V
second
As described in the SMBus specification, an SMBus slave may inform the SMBus master that it wants
to talk by asserting the SMBALERT# signal. One or more
as a wired-or bus to a common input.
B13
b8
+0.125
+0.250
-0.125
+127
+128
+190
+191
(°C)
-63
+1
0
ALERT
HIGH BYTE
°
C and the b1 and b0 bits of the Internal Temperature Value Low Byte register will always read 0.
THERM
B12
b7
/
THERM2
Data in Binary Format reads 0000 0000 000 for all temperatures ≤ 0.00°C.
Data in Offset Binary Format reads 0000 0000 000 for all temperatures ≤ -64
Data in Binary Format reads 0111 1111 000 for all temperatures ≥ +127°C.
Data in Offset Binary Format reads 1111 1111 000 for all temperatures ≥ +191
DD
.The
B11
b6
output.
ALERT
output asserts if an out of limit measurement is detected as described in
Table 4.2 Bit Position of Two Byte Values
B10
b5
Table 4.1 Temperature Data Format
0000 0000 000
0000 0000 000
0000 0000 000
0000 0000 001
0000 0000 010
0000 0001 000
0111 1111 000
0111 1111 000
0111 1111 000
0111 1111 000
/
16. The
THERM2
Table
B9
b4
DEFAULT RANGE
DATASHEET
4.2. These bits are stored in the upper three bits of the register,
ALERT
pin can be used as an SMBALERT#, or may be configured as a
B8
b3
BINARY
Note 4.3
Note 4.3
Note 4.3
Note 4.3
Note 4.1
Note 4.1
Note 4.1
/
11
THERM2
B7
b2
B6
b1
pin is an open drain output and requires a pull-up
B5
b0
ALERT
0000 0001 000
0011 1111 111
0100 0000 000
0100 0000 001
0100 0000 010
0100 0001 000
1011 1110 000
1011 1111 000
1111 1110 000
1111 1111 000
Table
B4
0
LOW BYTE
outputs can be hardwired together
EXTENDED RANGE
4.2, the upper case “B” shows
OFFSET BINARY
B3
0
Note 4.4
Note 4.2
B2
0
Revision 1.4 (12-18-07)
B1
0
°
°
C.
C.
B0
0
4.12,