參數(shù)資料
型號(hào)： MAX6655MEE+T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 電源管理
英文描述： Dual Remote/Local Temperature Sensors and Four-Channel Voltage Monitors
中文描述： 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封裝： 0.150 INCH, 0.025 INCH PTICH, QSOP-16
文件頁(yè)數(shù)： 15/18頁(yè)
文件大?。?/td> 256K
代理商： MAX6655MEE+T
MAX6655/MAX6656
ADC Conversion Sequence
Each time a conversion begins, all channels are con-
verted, and the results of the measurements are avail-
able after the end of conversion. A BUSY status bit in
the Status Byte shows that the device is actually per-
forming a new conversion; however, even if the ADC is
busy, the results of the previous conversion are always
available. The conversion sequence for the MAX6655
(MAX6656) is External Diode 1, External Diode 2,
Internal Diode, VIN3, VIN2 (VCC), VIN1, VCC (VIN2).
The ADC always converts at maximum speed, but the
time between a sequence of conversions is adjustable.
The Conversion Rate Control Byte (Table 1) shows the
possible delays between conversions. Disabling voltage
or temperature measurements with the Configuration
Byte makes the ADC complete the conversion
sequence faster.
Low-Power Standby Mode
Standby mode disables the ADC and reduces the sup-
ply current drain to 3A (typ). Enter standby mode by
forcing STBY low or through the RUN/STOP bit in the
Configuration Byte register. Hardware and software
standby modes behave identically; all data is retained
in memory, and the SMBus interface is alive and listen-
ing for reads and writes. Standby mode is not a shut-
down mode. Activity on the SMBus draws extra supply
current (see Typical Operating Characteristics).
Enter hardware standby mode by forcing STBY low. In
a notebook computer, this line may be connected to
the system SUSTAT# suspend-state signal. The STBY
low state overrides any software conversion command.
If a hardware or software standby command is
received while a conversion is in progress, the conver-
sion cycle is truncated, and the data from that conver-
sion is not latched into the Temperature Reading
register. The previous data is not changed and remains
available.
Supply current during the 125ms conversion is typically
550A. Between conversions, the instantaneous supply
current is about 25A, due to the current consumed by
the conversion-rate timer. With very low supply voltages
(under the POR threshold), the supply current is higher
due to the address input bias currents.
Dual Remote/Local Temperature Sensors and
Four-Channel Voltage Monitors
6
_______________________________________________________________________________________
Write Byte Format
Read Byte Format
Send Byte Format
Receive Byte Format
Slave Address: equiva-
lent to chip-select line of
a 3-wire interface
Command Byte: selects which
register you are writing to
Data Byte: data goes into the register
set by the co mma nd byte ( to se t
thresholds, configuration masks, and
sampling rate)
Slave Address: equiva-
lent to chip-select line
Command Byte: selects
which register you are
reading from
Slave Address: repeated
due to change in data-
flow direction
Data Byte: reads from
the register set by the
command byte
Data Byte: writes data to the
register commanded by the
last read byte or write byte
transmission
Data Byte: reads data from
the register commanded
by the last read byte or
write byte transmission;
also used for SMBus alert
response return address
S = Start condition
P = Stop condition
Shaded = Slave transmission
A = Not acknowledged
ACK
7 bits
ADDRESS
ACK
8 bits
DATA
ACK
P
8 bits
S
COMMAND
WR
ACK
7 bits
ADDRESS
ACK
S
ACK
8 bits
DATA
7 bits
ADDRESS
RD
8 bits
P
S
COMMAND
A
WR
ACK
7 bits
ADDRESS
8 bits
COMMAND
ACK
P
S
WR
ACK
7 bits
ADDRESS
RD
8 bits
DATA
P
S
A
Figure 1. SMBus/I2C Protocols
相關(guān)PDF資料
PDF描述
MAX6656MEE+ Dual Remote/Local Temperature Sensors and Four-Channel Voltage Monitors
MAX6656MEE+T Dual Remote/Local Temperature Sensors and Four-Channel Voltage Monitors
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MAX6657MSA+T ±1°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6656MEE 功能描述:板上安裝溫度傳感器 Dual Remote/Local Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類(lèi)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
MAX6656MEE+ 功能描述:板上安裝溫度傳感器 Dual Remote/Local Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類(lèi)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
MAX6656MEE+T 功能描述:板上安裝溫度傳感器 Dual Remote/Local Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類(lèi)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
MAX6656MEE-G05 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)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
MAX6656MEE-T 功能描述:板上安裝溫度傳感器 Dual Remote/Local Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類(lèi)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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