EMC1074-A-AIZL-TR SMSC, EMC1074-A-AIZL-TR Datasheet - Page 15

• Manufacturer Part Number: EMC1074-A-AIZL-TR
• Description: Board Mount Temperature Sensors SMBus Temp Sensor Selectable Address
• Manufacturer: SMSC

Specifications of EMC1074-A-AIZL-TR

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

Multiple Channel 1°C Temperature Sensors with Selectable Address
Datasheet
APPLICATION NOTE: The ARA does not clear the Status Register and if the MASK bit is cleared prior to the Status
SMSC EMC1073 / EMC1074
4.7
4.8
The EMC1073 and EMC1074 will respond to the ARA in the following way:
1. Send Slave Address and verify that full slave address was sent (i.e. the SMBus communication
2. Set the MASK bit to clear the ALERT pin.
The EMC1073 and EMC1074-A SMBus address is determined by the pull-up resistor on the THERM
pin as shown in
The Address decode is performed by pulling known currents from VDD through the external resistor
causing the pin voltage to drop based on the respective current / resistor relationship. This pin voltage
is compared against a threshold that determines the value of the pull-up resistor.
The EMC1073 and EMC1074 respond to hard-wired SMBus slave address as shown in
"Part
The EMC1073 and EMC1074 support SMBus Timeout. If the clock line is held low for longer than
30ms, the device will reset its SMBus protocol. This function can be enabled by setting the TIMEOUT
bit in the Consecutive Alert Register (see
SMBus Address
SMBus Timeout
from the device was not prematurely stopped due to a bus contention event).
Selection".
Register being cleared, the ALERT pin will be reasserted.
Table
PULL UP RESISTOR
4.7.
ON THERM PIN
Table 4.7 SMBus Address Decode
4.7k
6.8k
10k
15k
22k
33k
DATASHEET
Section
15
SMBUS ADDRESS
6.12).
1011_100xb
1001_100xb
1101_100xb
0011_100xb
0111_100xb
1111_100xb
Revision 1.39 (10-11-10)
Table 1.1,