MCP98242-BESLASHST datasheet(9/52 Pages) MICROCHIP

9 / 52 page

DS21996C-page 9

MCP98242

3.0

PIN DESCRIPTION

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1:

PIN FUNCTION TABLES

3.1

Address Pins (A2, A1, A0)

These pins are device address input pins.

The address pins correspond to the Least Significant

bits (LSb) of address bits. The Most Significant bits

(MSb) (A6, A5, A4, A3). This is shown in Table 3-2.

3.2

Ground Pin (GND)

The GND pin is the system ground pin.

3.3

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”).

3.4

Serial Clock Line (SCLK)

The SCLK 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”).

3.5

Open-Drain Temperature Alert

Output (Event)

The MCP98242 Event pin is an open-drain output. The

device outputs a signal when the ambient temperature

goes beyond the user-programmed temperature limit.

(see Section 5.2.3 “Event Output Configuration”).

3.6

Power Pin (VDD)

VDD is the power pin. The operating voltage range, as

specified in the DC electrical specification table, is

applied on this pin.

3.7

Exposed Thermal Pad (EP)

There is an internal electrical connection between the

Exposed Thermal Pad (EP) and the GND pin; they

must be connected to the same potential on the Printed

Circuit Board (PCB).

DFN/TDFN

TSSOP

Symbol

Pin Function

Package Type

Slave Address

GND

Ground

SDA

Serial Data Line

SCLK

Serial Clock Line

Event

Temperature Alert Output

VDD

Power Pin

—

Exposed Thermal Pad (EP);

must be connected to VSS.

SDA

GND

Event

SCLK

8-Pin TSSOP

VDD

TABLE 3-2:

MCP98242 ADDRESS BYTE

Device

Address Code

Slave

Address

A6 A5 A4 A3 A2 A1 A0

Sensor

EEPROM

Write Protect

Note:

User-selectable address is shown by X.

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