参数资料
| 型号： | ATSTK525 |
| 厂商： | Atmel |
| 文件页数： | 16/39页 |
| 文件大小： | 0K |
| 描述： | KIT STARTER FOR AT90USB |
| 产品培训模块： | megaAVR Introduction |
| 标准包装： | 1 |
| 附件类型： | STK500 扩展模块 |
| 适用于相关产品： | AT90USB 设备 |
| 产品目录页面： | 615 (CN2011-ZH PDF) |
| 配用： | ATEVK525-ND - ADD ON KIT FOR STK525 ATSTK500-ND - PROGRAMMER AVR STARTER KIT |
| 相关产品： | AT90USB1287-16AUR-ND - IC MCU AVR 128K ISP USB TQFP64 AT90USB82-16MUR-ND - MCU AVR USB 8K FLASH 32-QFN AT90USB162-16MU-ND - MCU AVR USB 16K FLASH 32-QFN AT90USB162-16AU-ND - MCU AVR USB 16K FLASH 32-TQFP AT90USB162-16MURDKR-ND - IC AVR MCU 16K FLASH 32QFN AT90USB162-16AURDKR-ND - IC AVR MCU 16K FLASH 32TQFP AT90USB82-16MU-ND - IC AVR MCU 8K FLASH 32QFN AT90USB162-16MURCT-ND - IC AVR MCU 16K FLASH 32QFN AT90USB162-16AURCT-ND - IC AVR MCU 16K FLASH 32TQFP AT90USB162-16MURTR-ND - IC AVR MCU 16K FLASH 32QFN 更多... |
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Using the STK525
2.6.3
Temperature Sensor
The temperature sensor uses a thermistor (R18), or temperature-sensitive resistor. This
thermistor has a negative temperature coefficient (NTC), meaning the resistance goes
up as temperature goes down. Of all passive temperature measurement sensors,
thermistors have the highest sensitivity (resistance change per degree of temperature
change). Thermistors do not have a linear temperature/resistance curve.
The voltage over the NTC can be found using the A/D converter (connected to channel
0). See the AT90USBxxx datasheet for how to use the ADC. The thermistor value (R T )
is calculated with the following expression:
R T = ( R H ? V ADC 0 ) ? ( V CC V ADC 0 )
Where:
R T = Thermistor value ( Ω ) at T temperature (°Kelvin)
R H = Second resistor of the bridge -100 K Ω ± 10% at 25°C
V ADC0 = Voltage value on ADC-0 input (V)
V CC = Board power supply
The NTC thermistor used in STK525 has a resistance of 100 K Ω ± 5% at 25°C (T 0 ) and a
beta-value of 4250 ±3%. By the use of the following equation, the temperature (T) can
be calculated:
T
ln
β
R T
R 0
β
T 0
Where:
R T = Thermistor value ( Ω ) at T temperature (°Kelvin)
? = 4250 ±3%
R 0 = 100 K Ω ± 5% at 25°C
T 0 = 298 °K (273 °K + 25°K)
The following cross table also can be used. It is based on the above equation.
Table 2-4 . Thermistor Values versus Temperature
Temp.
(°C)
-20
-19
-18
-17
-16
-15
-14
-13
-12
-11
-10
R T
(K Ω )
1263,757
1182,881
1107,756
1037,934
973,006
912,596
856,361
803,984
755,175
709,669
667,221
Temp.
(°C)
10
11
12
13
14
15
16
17
18
19
20
R T
(K Ω )
212,958
201,989
191,657
181,920
172,740
164,083
155,914
148,205
140,926
134,051
127,555
Temp.
(°C)
40
41
42
43
44
45
46
47
48
49
50
R T
(K Ω )
50,486
48,350
46,316
44,380
42,537
40,781
39,107
37,513
35,992
34,542
33,159
Temp.
(°C)
70
71
72
73
74
75
76
77
78
79
80
R T
(K Ω )
15,396
14,851
14,329
13,828
13,347
12,885
12,442
12,017
11,608
11,215
10,838
2-16
7608A–AVR–04/06
STK525 Hardware User Guide
相关PDF资料 |
PDF描述 |
|---|---|
| AU-Y1005-2-R | CONN USB 2.0 R/A FMAL TYPE-A PCB |
| AU-Y1005-3-R | CONN USB 3.0 R/A FMAL TYPE-A PCB |
| AU-Y1005 | CONN USB RTANG FMALE TYPE A PCB |
| AU-Y1006-2-R | CONN USB 2.0 R/A FMAL TYPE-A SMD |
| AU-Y1006-3-R | CONN USB A 3.0 FEMALE R/A SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ATSTK526 | 功能描述:开发板和工具包 - AVR Starter Kit for AT90USB82/162 RoHS:否 制造商:Arduino 产品:Evaluation Boards 工具用于评估:ATMega32U4 核心:AVR 接口类型:I2C, UART, USB 工作电源电压:6 V to 20 V |
| ATSTK594 | 功能描述:开发板和工具包 - AVR AT94K FPSLIC DAUGHTR BOARD FOR STK500 RoHS:否 制造商:Arduino 产品:Evaluation Boards 工具用于评估:ATMega32U4 核心:AVR 接口类型:I2C, UART, USB 工作电源电压:6 V to 20 V |
| ATSTK600 | 功能描述:开发板和工具包 - AVR Starter Kit for AVR & AVR32 RoHS:否 制造商:Arduino 产品:Evaluation Boards 工具用于评估:ATMega32U4 核心:AVR 接口类型:I2C, UART, USB 工作电源电压:6 V to 20 V |
| ATSTK600-ATMEGA2560 | 功能描述:插座和适配器 STK600 DEVICECARD ATMEGA2560 RoHS:否 制造商:Silicon Labs 产品:Adapter 用于:EM35x |
| ATSTK600-ATTINY10 | 功能描述:插座和适配器 STK600 adaptercard for ATtiny10 RoHS:否 制造商:Silicon Labs 产品:Adapter 用于:EM35x |
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