參數(shù)資料
型號： MAX6661AEE+T
廠商： Maxim Integrated
文件頁數(shù)： 9/19頁
文件大?。?/td> 257K
描述： IC REG FAN SPEED 16-QSOP
標(biāo)準(zhǔn)包裝： 2,500
功能： 風(fēng)扇控制，溫度監(jiān)控器
傳感器類型： 外部
感應(yīng)溫度： 外部傳感器
精確度： ±5°C（最小值）
拓?fù)洌?/td> ADC，比較器，風(fēng)扇控制，多路復(fù)用器，寄存器庫
輸出類型： SPI?
輸出警報： 是
輸出風(fēng)扇： 是
電源電壓： 3 V ~ 5.5 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 16-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 16-QSOP
包裝： 帶卷 (TR)
register is not loaded. DOUT is high impedance during
a WRITE operation. Figure 4 shows the write cycle.
For single byte commands such as OSHT and SPOR,
the operation need only be 7 bits long where the
READ/WRITE bit is omitted. Here the command is
loaded into the shift register on the rising edge of SC
and the command is decoded during the high period of
the 7th clock pulse. The 7th falling edge of SC shifts the
command from the shift register to the appropriate reg-
ister. CS can then go high after the SC low to CS high
hold time t
CSH
(see SPI AC Timing, Electrical Char-
acteristics). Figure 5 shows the timing waveforms for
the MAX6661s SPI interface.
Remote Temperature Data Register
Two registers, at addresses 81h and 83h, store the
measured temperature data from the remote diode. The
data format for the remote-diode temperature is 10 bits
+ sign, with each LSB corresponding to 0.125癈, in
twos complement format (Table 3). Register 83h con-
tains the sign bit and the first 7 bits. Bits 7, 6, and 5 of
register 81h are the 3LSBs. If the two registers are not
read immediately, one after the other, their contents
may be the result of two different temperature measure-
ments, leading to erroneous temperature data. For this
reason, a parity bit has been added to the 81h register.
Bit 4 of this is zero if the data in 81h and 83h are from
the same temperature conversion and 83h is read first.
Otherwise, bit 4 is one. The remaining bits are dont
cares. When reading temperature data, register 83h
must be read first.
Alarm Threshold Registers
The MAX6661 provides four alarm threshold registers
that can be programmed with a twos complement tem-
perature value with each LSB corresponding to 1癈.
The registers are T
HIGH
, T
LOW
, T
MAX
, and T
HYST
. If the
measured temperature equals or exceeds T
HIGH
, or is
less than T
LOW
, an ALERT interrupt is asserted. If the
measured temperature equals or exceeds T
MAX
, the
OVERT output is asserted (see the Overtemperature
Output OVERT section). The POR state for T
HIGH
is
Remote Temperature-Controlled Fan-Speed
Regulator with SPI-Compatible Interface
_______________________________________________________________________________________   9
REGISTERS
COMMAND
POR STATE
FUNCTION
RRL
81h
00000000
Read Remote Temperature Low Byte (3MSBs)
RRH
83h
00000000
Read Remote Temperature High Byte (Sign Bit and First 7 Bits)
RSL
85h
00000000
Read Status Byte
RCL/WCL
87h/92h
00000000
Read/Write Configuration Byte
RFCR/WFCR
89h/94h
00000010
Read/Write Fan-Conversion Rate Byte
RTMAX/WTMAX
A1h/A4h
01100100 (+100癈)
Read/Write Remote T
MAX
RTHYST/WTHYST
A3h/A6h
01011111 (+95癈)
Read/Write Remote T
HYST
RTHIGH/WTHIGH
8Fh/9Ah
01111111 (+127癈)
Read/Write Remote T
HIGH
RTLOW/WTLOW
91h/9Ch
11001001 (-55癈)
Read/Write Remote T
LOW
SPOR
F8h
N/A
Write Software POR
OSHT
9Eh
N/A
Write One-Shot Temperature Conversion
RTFAN/WTFAN
A9h/B2h
00111100 (+60癈)
Read/Write Fan-Control Threshold Temperature T
FAN
RFSC/WFSC
ABh/B4h
00000000
Read/Write Fan-Speed Control
RFG/WFG
ADh/B6h
10000000
Read/Write Fan Gain
RFTP
AFh
00000000
Read Fan Tachometer Period
RFTCL/WFTPLP
B1h/B8h
11111111
Read/Write Fan Tachometer Period Limit (Fan-Failure Limit)
RFTD/WFTD
BBh/BCh
00000001
Read/Write Fan Tachometer Divisor
RFS/WFS
BFh/C0h
11111111
Read/Write Full-Scale Register
RM/WM
F5h/F6h
00000000
Read/Write Mode Register
ID CODE
FDh
01001101
Read Manufacturer ID Code
ID CODE
FFh
00001001
Read Device ID Code
Table 2. MAX6661 Command-Byte Bit Assignments
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參數(shù)描述
MAX6662EVKIT+ 功能描述:板上安裝溫度傳感器 MAX6662 Eval Kit RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6662MSA 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6662MSA+ 功能描述:板上安裝溫度傳感器 12-Bit + Sign Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6662MSA+T 功能描述:板上安裝溫度傳感器 12-Bit + Sign Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6662MSA-T 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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