TC77 查看數據表（PDF） - Microchip Technology

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TC77

Thermal Sensor with SPI Interface

Microchip Technology 

TC77

1.0 ELECTRICAL

CHARACTERISTICS

1.1 Absolute Maximum Ratings †

VDD ........................................................................ 6.0V

All inputs and outputs w.r.t. VSS ..... -0.3V to VDD +0.3V

Storage temperature ..........................-65°C to +150°C

Ambient temp. with power applied .....-55°C to +125°C

Junction Temperature......................................... 150°C

PIN FUNCTION TABLE

Name

SI/O

SCK

VSS

CS

NC

VDD

Function

Serial Data Pin

Serial Clock

Ground

Chip Select (Active-Low)

No Connection

Power Supply

ESD protection on all pins:

Human Body Model (HBM)..............................>4 kV

Machine Model (MM) ......................................>200V

† Notice: Stresses above those listed under "Maximum

Ratings" may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at

those or any other conditions above those indicated in the

operation listings of this specification is not implied. Exposure

to maximum rating conditions for extended periods may affect

device reliability.

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, all parameters apply at VDD = 2.7V to 5.5V and

TA = -55°C to +125°C.

Parameters

Sym

Min Typ

Max Units

Conditions

Power Supply

Operating Voltage Range

Operating Current

VDD

2.7

—

5.5

V Note 1

IDD

—

250

400

µA Continuous Temperature

Conversion Mode

Power-On Reset Threshold

VPOR

1.2

1.6

2.2

V VDD falling or rising edge

Standby Supply Current

IDD-

—

0.1

1.0

µA Shutdown Mode

STANDBY

Temperature to Bits Converter

Resolution

—

13

—

Bits ADC LSb = 0.0625°C/bit

(Note 4)

Temperature Conversion Time

tCT

—

300

400

ms

Temperature Accuracy

(Note 1)

TERR

-1.0

—

-2.0

—

-3.0

—

+1.0

+2.0

+3.0

°C +25°C < TA < +65°C

-40°C < TA < +85°C

-55°C < TA < +125°C

TC77-3.3MXX: VDD = 3.3V

TC77-5.0MXX: VDD = 5.0V

Note 1: The TC77-3.3MXX and TC77-5.0MXX will operate from a supply voltage of 2.7V to 5.5V. However, the tem-

perature accuracy of the TC77-3.3MXX and TC77-5.0MXX is specified at the nominal operating voltages of

3.3V and 5.0V, respectively. As VDD varies from the nominal operating value, the accuracy may be

degraded (Refer to Figures 2-6 and 2-7).

2: All time measurements are measured with respect to the 50% point of the signal.

3: Load Capacitance, CL = 80 pF, is used for AC timing measurements of output signals.

4: Resolution = Temperature Range/No. of Bits = (+255°C – -256°C) / (213)

Resolution = 512/8192 = 0.0625°C/Bit

DS20092B-page 2

 2002-2012 Microchip Technology Inc.

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