MCP960X datasheet(33/57 Pages) MICROCHIP

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DS20005426G-page 33

MCP960X/L0X/RL0X

5.2

Sensor STATUS and Configuration

Registers

This device provides various temperature and

measurement Status bits which can be monitored

regularly by the host controller. In addition, this device

integrates various user-programmable features which

can

useful

develop

complex

thermal

management applications. The following sections

describe each feature in detail.

5.2.1

STATUS REGISTER

The STATUS register contains several flag bits that

indicate statuses, such as temperature alert, the ADC

input range status for the selected thermocouple type

and the Temperature register update status for both

single conversion or Burst mode conversions.

STATUS REGISTER

R/W-0

U-0

R-0

Burst Complete

TH Update

—

Input Range Alert 4 Status Alert 3 Status Alert 2 Status Alert 1 Status

Short-Circuit

(SC) (1)

Open-Circuit

(OC)/Input

Range (1)

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 7

Burst Complete: Burst Mode Conversions Status Flag bit

1 =TΔ register Burst mode conversions complete

0 = Writing ‘0’ has no effect

Once Burst mode is enabled, this bit is normally set after the first burst is complete. User can clear it and

poll the bit periodically until the next burst of temperature conversions is complete (see Register 5-8).

bit 6

TH Update: Temperature Update Flag bit

1 = Temperature conversion complete

0 = Writing ‘0’ has no effect

This bit is normally set. User can clear it and poll the bit until the next temperature conversion is complete.

bit 5

Unimplemented: Read as ‘0’ for the MCP9600/L00/RL00 only.

Short-Circuit (SC): Short-Circuit Detection bit for the MCP9601/L01/RL01 only (read-only)

1 = Thermocouple Shorted to VDD or VSS

0 = Normal operation

The VSENSE pin must be connected to the Thermocouple as indicated in Figure 1-1, using RA and RB

resistors.

Note 1: MCP9601/L01/RL01 only.

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