- 您現在的位置：買賣IC網 > PDF目錄165354 > ADT7462ACPZ-500RL7 (ON SEMICONDUCTOR) DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, SQUARE, SURFACE MOUNT PDF資料下載
參數資料
| 型號： | ADT7462ACPZ-500RL7 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, SQUARE, SURFACE MOUNT |
| 封裝： | 5 X 5 MM, LFCSP-32 |
| 文件頁數： | 30/88頁 |
| 文件大?。?/td> | 836K |
| 代理商： | ADT7462ACPZ-500RL7 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁當前第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁
ADT7462
Rev. 2 | Page 36 of 88 | www.onsemi.com
PWM LOGIC STATE
The PWM outputs can be programmed high for 100% duty
cycle (noninverted) or low for 100% duty cycle (inverted). This
is programmed for each PWM drive in the PWMx Configuration
Registers using the INV bit (Bit 4).
0 = Active high PWM outputs.
1 = Active low PWM outputs.
Low Frequency Mode PWM Drive Frequency
The PWM drive frequency can be adjusted for the application.
The ADT7462 supports both high frequency and low frequency
PWM. High or low frequency PWM mode is selected in
Register 0x02, Bit 2. In high frequency mode, the PWM drive
frequency is always 22.5 kHz and cannot be changed. Register 0x25
and Register 0x26 configure the PWM frequency in low fre-
quency mode for PWM1 to PWM4.
PWM Drive Frequency 1 is set using Bits [4:2] of the PWM1
and PWM2 frequency register (0x25).
PWM Drive Frequency 2 is set using Bits [7:5] of the PWM1
and PWM2 frequency register (0x25).
PWM Drive Frequency 3 is set using Bits [4:2] of the PWM3
and PWM4 frequency register (0x26).
PWM Drive Frequency 4 is set using Bits [7:5] of the PWM3
and PWM4 frequency register (0x26).
Table 27. Low Frequency PWM Options
Bit Code
Frequency
000
11 Hz
001
14.7 Hz
010
22.1 Hz
011
29.4 Hz
100
35.3 Hz
101
44.1 Hz
110
58.8 Hz
111
88.2 Hz
FAN SPEED CONTROL
The ADT7462 controls fan speed using two different modes:
automatic and manual.
In automatic fan speed control mode, fan speed is automatically
varied with temperature and without CPU intervention, after
initial parameters are set up. The advantage of this mode is that
if the system hangs, the system is protected from overheating.
The automatic fan speed control incorporates a feature called
dynamic TMIN calibration. This feature reduces the design effort
required to program the automatic fan speed control loop. For
more information on how to program the automatic fan speed
control loop and dynamic TMIN operation, see the Programming
the Automatic Fan Speed Control Loop section.
In manual fan speed control mode, the ADT7462 allows the
duty cycle of any PWM output to be manually adjusted. This is
useful if the user wants to change fan speed in the software or
adjust PWM duty cycle output for test purposes. Bits [7:5] of
Register 0x21 to Register 0x24 (PWM configuration registers)
control the behavior of each PWM output. Under manual con-
trol, each PWM output can be manually updated by writing to
Register 0xAA to Register 0xAD (PWM duty cycle registers).
Programming the PWM Current Duty Cycle Registers
The PWM current duty cycle registers are 8-bit registers that
allow the PWM duty cycle for each output to be set anywhere
from 0% to 100% in steps of 0.39%.
The value to be programmed into the PWMMIN register is
given by
Value (decimal) = PWMMIN/0.39
Example 1
For a PWM duty cycle of 50%,
Value (decimal) = 50/0.39 = 128 decimal
Value = 128 decimal or 0x80
Example 2
For a PWM duty cycle of 33%,
Value (decimal) = 33/0.39 = 85 decimal
Value = 84 decimal or 0x54
PWM Duty Cycle Registers
Register 0xAA PWM1 Duty Cycle = 0x00 (0% default)
Register 0xAB PWM2 Duty Cycle = 0x00 (0% default)
Register 0xAC PWM3 Duty Cycle = 0x00 (0% default)
Register 0xAD PWM4 Duty Cycle = 0x00 (0% default)
By reading the PWMx current duty cycle registers, the user can
keep track of the current duty cycle on each PWM output, even
when the fans are running in automatic fan speed control mode
or acoustic enhancement mode.
VARY PWM DUTY
CYCLE WITH 8-BIT
RESOLUTION
05
569
-0
39
Figure 51. Control PWM Duty Cycle Manually with a Resolution of 0.39%
相關PDF資料 |
PDF描述 |
|---|---|
| ADTSM66SV | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 3.92 N, SURFACE MOUNT-STRAIGHT |
| ADTS644N/KV | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.57 N, THROUGH HOLE-STRAIGHT |
| ADTSM648N/KV | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.57 N, SURFACE MOUNT-STRAIGHT |
| ADTS62KVB | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.47 N, THROUGH HOLE-STRAIGHT |
| ADUC7022BCP | 32-BIT, FLASH, 45.5 MHz, RISC MICROCONTROLLER, QCC40 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADT7462ACPZ-5RL7 | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ADT7462ACPZ-R7 | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ADT7462ACPZ-REEL | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ADT7462ACPZ-REEL7 | 功能描述:IC TEMP/VOLT MONITOR 32-LFCSP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADT7462EBZEVB | 功能描述:EVALUATION BOARD ADT7462 制造商:on semiconductor 系列:* 零件狀態(tài):在售 標準包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復。