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NCT214
http://onsemi.com
2
Figure 1. Functional Block Diagram
ON-CHIP
TEMPERATURE
SENSOR
ANALOG
MUX
BUSY
A-TO-D
CONVERTER
LOCAL TEMPERATURE
VALUE REGISTER
REMOTE OFFSET
REGISTER
RUN/STANDBY
EXTERNAL DIODE OPEN-CIRCUIT
STATUS REGISTER
SMBus/I
2
C INTERFACE
INTERRUPT
MASKING
SDATA
SCLK
9
8
ADDRESS POINTER
REGISTER
CONVERSION RATE
REGISTER
LOCAL TEMPERATURE
LOW-LIMIT REGISTER
LOCAL TEMPERATURE
HIGH-LIMIT REGISTER
REMOTE TEMPERATURE
LOW-LIMIT REGISTER
REMOTE TEMPERATURE
HIGH-LIMIT REGISTER
LOCAL THERM
LIMIT REGISTERS
EXTERNAL THERM
LIMIT REGISTERS
CONFIGURATION
REGISTERS
5
7
GND
6
V
DD
2
NCT214
D+
ALERT
/THERM2
THERM
3
D
4
REMOTE TEMPERATURE
VALUE REGISTER
ADD1
ADD0
10
1
Table 1. PIN ASSIGNMENT
Pin No.
Mnemonic
Description
1
ADD1
Address 1 pin. Tri-state input to set the SMBus address.
2
V
DD
Positive Supply, 3.0 V to 3.6 V.
3
D+
Positive Connection to Remote Temperature Sensor.
4
D
Negative Connection to Remote Temperature Sensor.
5
THERM
Active-low open-drain overtemperature output pin; needs pullup resistor.
6
GND
Ground
7
ALERT
/THERM2
Open-drain Logic Output used as interrupt or SMBus ALERT
. This can also be configured as a
second THERM
 output. Requires pullup resistor.
8
SDATA
Logic Input/Output, SMBus Serial Data. Open-drain Output. Requires pullup resistor.
9
SCLK
Logic Input, SMBus Serial Clock. Requires pullup resistor.
10
ADD0
Address 0 pin. Tri-state input to set the SMBus address.
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