MCP960X datasheet(17/57 Pages) MICROCHIP

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DS20005426G-page 17

MCP960X/L0X/RL0X

3.0

PIN DESCRIPTIONS

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 (VIN+, VIN-)

The thermocouple wires are directly connected to

these inputs. The positive node is connected to the

VIN+ pin, while the negative node connects to the VIN-

node. The thermocouple voltage is converted to degree

Celsius.

3.3

Power Pin (VDD)

VDD 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 and OC/SC Alert)

The 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.

The Open-Circuit (OC) Alert and the Short-Circuit (SC)

Alert output are also active-high push-pull outputs

(MCP9601/L01/RL01). These outputs are asserted

when Open-Circuit and Short-Circuit conditions are

detected on the VSENSE pin.

TABLE 3-1:

PIN FUNCTION TABLE

MCP9600/L00/RL00 MCP9601/L01/RL01

Symbol

Pin Function

1, 3, 5,13, 17

1, 3, 5, 13, 17

GND

Electrical Ground

VIN+

Thermocouple Positive Terminal Input

VIN-

Thermocouple Negative Terminal Input

6, 7, 9, 10, 18

10, 18

GND

Not Electrical Ground; must be tied to Ground

—6

VSENSE Thermocouple Open and Short-Circuit detection input

—

SC Alert Thermocouple Short-Circuit Alert Output

VDD

Power

—

OC Alert Thermocouple Open-Circuit Alert Output

Alert 1

Alert Output 1

Alert 2

Alert Output 2

Alert 3

Alert Output 3

Alert 4

Alert Output 4

ADDR

I2C Device Address Selection Voltage Input

SCL

I2C Clock Input

SDA

I2C Data Input

Exposed Thermal Pad (EP); must be connected to GND

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