Datasheet

 2015-2017 Microchip Technology Inc. DS20005426C-page 13
MCP9600
3.0 PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
3.1 Ground Pin (GND)
The GND pin is the system ground pin. Pins 1, 3, 5, 13
and 17 are system ground pins and they are at the
same potential. However, pins 6, 7, 9, 10 and 18 must
be connected to ground for normal operation.
3.2 Thermocouple Input (V
IN+
, V
IN-
)
The thermocouple wires are directly connected to
these inputs. The positive node is connected to the
V
IN+
pin, while the negative node connects to the V
IN-
node. The thermocouple voltage is converted to degree
Celsius.
3.3 Power Pin (V
DD
)
V
DD
is the power pin. The operating voltage range, as
specified in the DC Characteristics table, is applied on
this pin.
3.4 Push-Pull Alert Outputs
(Alert 1, 2, 3, 4)
The MCP9600 device’s Alert pins are user-
programmable push-pull outputs which can be used to
detect rising or falling temperatures. The device outputs
signal when the ambient temperature exceeds the
user-programmed temperature alert limit.
3.5 I
2
C Slave Address Pin (ADDR)
This pin is used to set the I
2
C slave address. This pin
can be tied to V
DD
, GND, or a ratio of V
DD
can be
selected to set up to eight address levels using a
resistive voltage divider network.
3.6 Serial Clock Line (SCL)
The SCL is a clock input pin. All communication and
timing is relative to the signal on this pin. The clock is
generated by the host or master controller on the bus
(see Section 4.0 “Serial Communication”).
3.7 Serial Data Line (SDA)
SDA is a bidirectional input/output pin used to serially
transmit data to/from the host controller. This pin
requires a pull-up resistor (see Section 4.0 “Serial
Communication”).
TABLE 3-1: PIN FUNCTION TABLE
5x5 MQFN Symbol Pin Function
1, 3, 5,13, 17 GND Electrical Ground
2V
IN+
Thermocouple Positive Terminal Input
4V
IN-
Thermocouple Negative Terminal Input
6, 7, 9, 10, 18 GND Not Electrical Ground; must be tied to Ground
8V
DD
Power
11 Alert 1 Alert Output 1
12 Alert 2 Alert Output 2
14 Alert 3 Alert Output 3
15 Alert 4 Alert Output 4
16 ADDR I
2
C Save Address Selection Voltage Input
19 SCL I
2
C Clock Input
20 SDA I
2
C Data Input
21 EP Exposed Thermal Pad (EP); must be connected to GND