NCT7290 Datasheet, PDF (4/33 Pages) ON Semiconductor – Internal Temp Sensor

NCT7290
PIN FUNCTION DESCRIPTION (continued)
Pin No.
Pin Name
Description
17
GPIO5
Programmable general purpose digital input or output. Default = input.
18
GPIO6
Programmable general purpose digital input or output. Default = input.
19
GPIO7
Programmable general purpose digital input or output. Default = input.
20
GPIO8
Programmable general purpose digital input or output. Default = input.
21
ALERT
Open-Drain Logic Output Used as Interrupt or SMBus Alert. Active low output.
22
V_DD
Power Supply. Can be powered from a supply in the range 3.3 V or 5.0 V ±10%
23
DGND
Digital Ground. This is the ground pin for all the digital circuitry.
24
SCL/SCLK Serial Clock Input for I²C and SPI interfaces
25
SDA/SDI
Serial Data Input/Output in I²C mode. Serial Data Input in SPI mode.
26
ADD0/SDO Address selection pin for I²C mode. Can be tied high, low or left floating to give multiple address
options. Serial Data Out in SPI mode.
27
ADD1/CS
Address selection pin for I²C mode. Can be tied high, low or left floating to give multiple address
options. Chip Select. Slave transmit enable in SPI mode – active low.
28
BUS_SEL
Selects I²C or SPI interface. BUS_SEL = DGND selects I²C; BUS_SEL = V_DD selects SPI.
29
BANK2_DAC Shutdown pin for Bank1 DAC outputs (V_OUT7, V_OUT8, V_OUT9, V_OUT10, V_OUT11 and V_OUT12).
Shutdown Active low input (i.e. tie low to shutdown the bank). Active low input. Pin cannot be left floating.
30
V_OUT7
Analog Output. 0 V to 5 V.
31
V_OUT8
Analog Output. 0 V to 5 V.
32
5V_DAC
Analog Supply. Analog supply pin for the DAC output amplifiers on V_OUT7−10.
33
V_OUT9
Analog Output. 0 V to 5 V.
34
DACGND Ground pin for the DAC output amplifiers.
35
V_OUT10
Analog Output. 0 V to 5 V.
36
V_OUT11
Analog Output. 0 V to 12 V.
37
12V_DAC
Analog Supply. Analog supply pins for the DAC output amplifiers on V_OUT11−12.
38
V_OUT12
Analog Output. 0 V to 12 V.
39
AGND
Analog ground. This is the ground pin for all the analog circuitry.
40
AV_DD
Analog Power Supply. Can be powered from a supply in the range 5.0 V ±10%.
41
D−
Negative Connection to Remote Temperature Sensor.
42
D+
Positive Connection to Remote Temperature Sensor.
43
V_IN1
Analog Input. 0 V to 2.5 V.
44
V_IN2
Analog Input. 0 V to 2.5 V.
45
V_IN3
Analog Input. 0 V to 2.5 V.
46
V_IN4
Analog Input. 0 V to 2.5 V.
47
V_IN5
Analog Input. 0 V to 2.5 V.
48
V_IN6
Analog Input. 0 V to 2.5 V.
49
V_IN7
Analog Input. 0 V to 2.5 V.
50
V_IN8
Analog Input. 0 V to 2.5 V.
51
V_IN9
Analog Input. 0 V to 2.5 V.
52
V_IN10
Analog Input. 0 V to 2.5 V.
53
V_IN11
Analog Input. 0 V to 2.5 V.
54
V_IN12
Analog Input. 0 V to 2.5 V.
55
V_IN13
Analog Input. 0 V to 2.5 V.
56
V_IN14
Analog Input. 0 V to 2.5 V.
GND
QFN GND flag located underneath package.
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