TC74DEMO Microchip Technology, TC74DEMO Datasheet

DEMO BOARD FOR TC74 THERML SENSR

TC74DEMO

Manufacturer Part Number
TC74DEMO
Description
DEMO BOARD FOR TC74 THERML SENSR
Manufacturer
Microchip Technology
Datasheets

Specifications of TC74DEMO

Processor To Be Evaluated
TC74
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TC74DEMO
Manufacturer:
Microchip Technology
Quantity:
2
Features
• Digital Temperature Sensing in SOT-23-5 or
• Outputs Temperature as an 8-Bit Digital Word
• Simple SMBus/I
• Solid-State Temperature Sensing:
• Supply Voltage of 2.7V to 5.5V
• Low Power:
Applications
• Thermal Protection for Hard Disk Drives
• PC Card Devices for Notebook Computers
• Low Cost Thermostat Controls
• Power Supplies
• Thermistor Replacement
Package Types
 2002 Microchip Technology Inc.
M
TO-220 Packages
- ±2°C (max.) Accuracy from +25°C to +85°C
- ±3°C (max.) Accuracy from 0°C to +125°C
- 200 µA (typ.) Operating Current
- 5 µA (typ.) Standby Mode Current
and other PC Peripherals
1 2 3 4 5
TO-220
TC74
Note: The TO-220 tab is connected
to pin 3 (GND)
2
C™ Serial Port Interface
Tiny Serial Digital Thermal Sensor
SDA
NC
1
5
SOT-23
TC74
GND
2
SCLK
V
4
3
DD
General Description
The TC74 is a serially accessible, digital temperature
sensor particularly suited for low cost and small form-
factor applications. Temperature data is converted from
the onboard thermal sensing element and made
available as an 8-bit digital word.
Communication with the TC74 is accomplished via a 2-
wire SMBus/I
can be used to implement multi-drop/multi-zone
monitoring. The SHDN bit in the CONFIG register can
be used to activate the low power Standby mode.
Temperature resolution is 1°C. Conversion rate is a
nominal 8 samples/sec. During normal operation, the
quiescent current is 200 µA (typ). During standby
operation, the quiescent current is 5 µA (typ).
Small size, low installed cost and ease of use make the
TC74 an ideal choice for implementing thermal
management in a variety of systems.
Functional Block Diagram
∆Σ Modulator
Temperature
Internal Sensor
Register
(Diode)
2
C compatible serial port. This bus also
Serial Port
Interface
Control
Logic
TC74
DS21462C-page 1
SCLK
SDA

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TC74DEMO Summary of contents

Page 1

... NC GND Note: The TO-220 tab is connected to pin 3 (GND)  2002 Microchip Technology Inc. General Description The TC74 is a serially accessible, digital temperature sensor particularly suited for low cost and small form- factor applications. Temperature data is converted from the onboard thermal sensing element and made available as an 8-bit digital word ...

Page 2

... Edge V Note 5 µ 5.5V, Note 1 DD µ 3.3V DD Serial Port Inactive, Note 4 °C +25°C <T < +85°C A 0°C < T < +125°C A -40°C < T < 0°C A SPS Note mA, Note µA kHz µsec 10% to 10% µsec 90% to 90%  2002 Microchip Technology Inc. ...

Page 3

... TC74AX -3.3 VXX properly over the wider power supply range of 2.7V to 5.5V. Each part type is tested and specified for rated accuracy at its nominal supply voltage change. DD  2002 Microchip Technology Inc. = 3.3V for TC74AX-3.3VXX and DD ≤ 125°C. Note 5 A Min Typ ...

Page 4

... H = LSB of Data Clocked into Slave I = Slave Pulls SDA Line Low SU(STOP) IDLE I = Acknowledge Clock Pulse J = Stop Condition K = New Start Condition SU(STOP) IDLE J = Acknowledge Clocked into Master K = Acknowledge Clock Pulse L = Stop Condition, Data Executed by Slave M = New Start Condition  2002 Microchip Technology Inc. ...

Page 5

... Specification, Rev. 1.0, for timing diagrams. 2.4 Serial Data (SDA) Bidirectional. Serial data is transferred on the SMBus both directions using this pin. See System Management Bus Specification, Rev. 1.0 for timing diagrams.  2002 Microchip Technology Inc. Symbol Type NC None GND Power V Power ...

Page 6

... SCLK will remain high. The state of SDA must remain stable during the high period of SCLK in order for a data bit to be considered valid. SDA only changes state while SCLK is low during normal data transfers (see START and STOP conditions).  2002 Microchip Technology Inc. ...

Page 7

... SDA after transmitting 8 bits. The host then generates a ninth clock cycle to allow the TC74 to pull the SDA line low. This action acknowledges that the TC74 successfully received the previous 8 bits of data or address.  2002 Microchip Technology Inc. WR ACK Command ACK 8 Bits ...

Page 8

... TC74 REGISTER SET SUMMARY POR Read Write State 0000 (1) √ N/A 0000b CONFIG 0000 √ √ Register 0000b  2002 Microchip Technology Inc. ...

Page 9

... TO-220 TC74A0- 3.3VAT 0229123 Standard marking consists of Microchip part number, year code, week code, and traceability code.  2002 Microchip Technology Inc. 1 & part number code + temp. range and voltage 3 = year and quarter code 4 = lot ID number Code SOT-23 (V) V0 TC74A0-5.0VCT V1 TC74A1-5.0VCT V2 TC74A2-5 ...

Page 10

... Carrier Tape, Number of Components Per Reel and Reel Size: Package Carrier Width (W) 5-Pin SOT-23A 8 mm DS21462C-page 10 User Direction of Feed P Standard Reel Component Orientation for TR Suffix Device (Mark Right Side Up) Pitch (P) Part Per Full Reel 4 mm 3000 W Reel Size 7 in.  2002 Microchip Technology Inc. ...

Page 11

... TO-220 .117 (2.97) .103 (2.62) .293 (7.44) .204 (5.18) .590 (14.99) .482 (12.24) PIN 1  2002 Microchip Technology Inc. .075 (1.90) REF. .071 (1.80) .059 (1.50) .037 (0.95) REF. .118 (3.00) .010 (2.80) 10° MAX. .024 (0.60) ...

Page 12

... TC74 NOTES: DS21462C-page 12  2002 Microchip Technology Inc. ...

Page 13

... The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products.  2002 Microchip Technology Inc. Examples TC74A0-3 ...

Page 14

... TC74 NOTES: DS21462C-page 14  2002 Microchip Technology Inc. ...

Page 15

... Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system ...

Page 16

... Korea Microchip Technology Korea 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea 135-882 Tel: 82-2-554-7200 Fax: 82-2-558-5934 Singapore Microchip Technology Singapore Pte Ltd. 200 Middle Road #07-02 Prime Centre Singapore, 188980 Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan Microchip Technology (Barbados) Inc., Taiwan Branch 11F-3, No ...

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