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參數(shù)資料
| 型號(hào)： | TC77-5.0MCTTR |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Thermal Sensor with SPI Interface |
| 中文描述： | 熱傳感器，SPI接口 |
| 文件頁(yè)數(shù)： | 1/22頁(yè) |
| 文件大小： | 374K |
| 代理商： | TC77-5.0MCTTR |
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2002 Microchip Technology Inc.
DS20092A-page 1
M
TC77
Features
Digital Temperature Sensing in 5-Pin SOT-23A
and 8-Pin SOIC Packages
Outputs Temperature as a 13-Bit Digital Word
SPI and MICROWIRE Compatible Interface
Solid State Temperature Sensing
±1°C (max.) accuracy from +25°C to +65°C
±2°C (max.) accuracy from -40°C to +85°C
±3°C (max.) accuracy from -55°C to +125°C
2.7V to 5.5V Operating Range
Low Power
- 250 μA (typ.) Continuous Conversion Mode
- 0.1 μA (typ.) Shutdown Mode
Typical Applications
Thermal Protection for Hard Disk Drives and
Other PC Peripherals
PC Card Devices for Notebook Computers
Low Cost Thermostat Controls
Industrial Control
Office Equipment
Cellular Phones
Thermistor Replacement
Block Diagram
Description
The TC77 is a serially accessible digital temperature
sensor particularly suited for low cost and small form-
factor applications. Temperature data is converted from
the internal thermal sensing element and made avail-
able at anytime as a 13-bit two’s compliment digital
word. Communication with the TC77 is accomplished
via a SPI and MICROWIRE compatible interface. It has
a 12-bit plus sign temperature resolution of 0.0625°C
per Least Significant Bit (LSb). The TC77 offers a tem-
perature accuracy of ±1.0°C (max.) over the tempera-
ture range of +25°C to +65°C. When operating, the
TC77 consumes only 250 μA (typ.). The TC77’s Con-
figuration register can be used to activate the low
power Shutdown mode, which has a current consump-
tion of only 0.1 μA (typ.). Small size, low cost and ease
of use make the TC77 an ideal choice for implementing
thermal management in a variety of systems.
Package Types
Typical Application
TC77
Diode
Temperature
Sensor
V
DD
SCK
CS
Serial
Port
Interface
SI/O
13-Bit
Sigma Delta
A/D Converter
Register
Temperature
Register
Internal
Configuration
Manufacturer
ID Register
V
SS
SOT-23-5
1
SOIC
1
V
DD
V
SS
SCK
SI/O
CS
TC77
TC77
SCK
SI/O
V
SS
NC
CS
V
DD
NC
NC
AN0
SCK
SDI
CS
SCK
SI/O
TC77
0.1μF
V
DD
V
SS
V
DD
PICmicro
MCU
Thermal Sensor with SPI
Interfa
ce
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