MCP98244 datasheet(14/52 Pages) MICROCHIP

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MCP98244

DS22327C-page 14

 2012-2013 Microchip Technology Inc.

5.1.1

CAPABILITY REGISTER

This is a read-only register used to identify the

temperature sensor capability. The device capability bit

assignments are specified by TSE2004av, and this

device is factory configured to meet the default

conditions as described in Register 5-2 (these values

can not be changed).

For example, the MCP98244 device is capable of

providing temperature at 0.25°C resolution, measuring

temperature below and above 0°C, providing ±1°C and

±2°C accuracy over the active and monitor temperature

ranges

(respectively)

and

providing

user-

programmable temperature event boundary trip limits.

These functions are described in further detail in the

following sections.

CAPABILITY REGISTER (READ-ONLY)

 ADDRESS ‘0000 0000’b

U-0

——

—

bit 15

bit 8

R-1

R-0

R-1

SHDN Status

tOUT Range

VHV

Resolution

Meas. Range

Accuracy

Temp Alarm

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 15-8

Unimplemented:

Read as ‘0’

bit 7

Event output status during Shutdown (SHDN Status):

Event output remains in previous state. If the output asserts before shutdown command, it

remains asserted during shutdown.

Event output deasserts during shutdown. After shutdown, it takes tCONV to re-assert the Event

output (power-up default)

bit 6

I2C Bus time-out (tOUT Range):

Bus time-out range is 10 ms to 60 ms

Bus time-out range is 25 ms to 35 ms (power-up default)

bit 5

High Voltage Input

Pin A0 does not accept High Voltage

Pin A0 accepts High Voltage for the EEPROM Write Protect feature (power-up default)

bit 4-3

Resolution:

= 0.5°C

= 0.25°C (power up default)

= 0.125°C

= 0.0625°C

These bits reflect the selected resolution (see Section 5.2.4 “Temperature Resolution”)

bit 2

Temperature Measurement Range (Meas. Range):

=TA 0 (decimal) for temperature below 0°C

The part can measure temperature below 0°C (power-up default)

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