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參數(shù)資料
| 型號： | LM64 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 【1∑C Remote Diode Temperature Sensor with PWM Fan Control and 5 GPIO’s |
| 中文描述： | 【1ΣC遠程二極管溫度傳感器，PWM風(fēng)扇控制和5個GPIO的 |
| 文件頁數(shù)： | 19/29頁 |
| 文件大?。?/td> | 363K |
| 代理商： | LM64 |
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2.0 LM64 Registers
Fan Control Registers
(Continued)
(Continued)
Address
Hex
4D
HEX
FAN PWM FREQUENCY REGISTER
7:5
Read/
Write
Bits
POR
Value
Name
Description
4D
R/W
000
PWM
Frequency
These bits are unused and always set to 0
The PWM Frequency = PWM_Clock / 2n, where PWM_Clock = 360
kHz or 1.4 kHz (per the PWM Clock Select bit in Register 4A), and n =
value of the register. Note: n = 0 is mapped to n = 1. See the
Application Note at the end of this datasheet.
4:0
10111
4C
HEX
PWM VALUE REGISTER
4C
Read
(Write
only if
reg
4A bit
5 = 1.)
7:6
00
PWM
Value
These bits are unused and always set to 0
If PWM Program (register 4A, bit 5) = 0 this register is read only and
reflects the LM64’s current PWM value from the Lookup Table.
If PWM Program (register 4A, bit 5) = 1, this register is read/write and
the desired PWM value is written directly to this register, instead of
from the Lookup Table, for direct fan speed control.
This register will read 0 during the Spin-Up cycle.
See Application Notes section at the end of this datasheet for more
information regarding the PWM Value and Duty Cycle in %.
5:0
000000
L
www.national.com
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