MCP98244 datasheet(8/52 Pages) MICROCHIP

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MCP98244

DS20002327D-page 8

 2012-2022 Microchip Technology Inc. and its subsidiaries

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 (A0, A1, A2)

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

The A0 Address pin is a multi-function pin. This input

pin is also used for high voltage input VHV to enable the

EEPROM Software Write Protect feature, for more

information see Section 5.3.3 “Bank or page selec-

tion for EEPROM Read/write operation”.

All address pin have an internal pull-down resistors.

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 (SCL)

The SCL is a clock input pin. All communication timing

is relative to the signal on this pin. The clock is gener-

ated by the host or host controller on the bus. (See

Section 4.0 “Serial Communication”).

3.5

Temperature Alert, Open-Drain

Output (Event)

The MCP98244 temperature Event output pin is an

open-drain output. The device outputs a signal when

the ambient temperature goes beyond the user-pro-

grammed 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 can

be connected to the same potential on the Printed

Circuit Board (PCB). This provides better thermal

conduction from the PCB to the die.

MCP98244

Symbol

Description

TDFN

Client Address and EEPROM Software Write Protect High Voltage Input (VHV)

Client Address

GND

Ground

SDA

Serial Data Line

SCL

Serial Clock Line

Event

Temperature Alert Output

8VDD

Power Pin

Exposed Thermal Pad (EP); can be connected to GND.

TABLE 3-2:

MCP98244 ADDRESS BYTE

Device

Address Code

Client

Address

A6 A5 A4 A3 A2 A1 A0

Sensor

EEPROM

Write Protect

—2 —2 —2

Note 1: User-selectable address is shown by X,

where X is 1 or 0 for VDD and GND,

respectively.

2: The address pins are ignored for all Write

Protect commands.

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