參數(shù)資料
型號： MAX1619
廠商： Maxim Integrated Products, Inc.
元件分類： 溫度/濕度傳感器
英文描述： Remote/Local Temperature Sensor with Dual- Alarm Outputs and SMBus Serial Interface
中文描述： 遠端/本地溫度傳感器，帶有雙路報警輸出及SMBus串行接口
文件頁數(shù)： 15/20頁
文件大?。?/td> 304K
代理商： MAX1619
The address pin states are checked at POR and SPOR
only, and the address data stays latched to reduce qui-
escent supply current due to the bias current needed
for high-Z state detection. A new device address can be
written using the Write Address Command FDh.
The MAX1619 also responds to the SMBus Alert Response
slave address (see the Alert Response Address section).
POR and UV LO
The MAX1619 has a volatile memory. To prevent ambig-
uous power-supply conditions from corrupting the data in
memory and causing erratic behavior, a POR voltage
detector monitors V
CC
and clears the memory if V
CC
falls
below 1.7V (typical, see Electrical Characteristics table).
When power is first applied and V
CC
rises above 1.75V
(typical), the logic blocks begin operating, although reads
and writes at V
CC
levels below 3V are not recommended.
A second V
CC
comparator, the ADC UVLO comparator,
prevents the ADC from converting until there is sufficient
headroom (V
CC
= 2.8V typical).
The SPOR software POR command can force a power-on
reset of the MAX1619 registers via the serial interface. Use
the SEND BYTE protocol with COMMAND = FCh. This is
most commonly used to reconfigure the slave address of
the MAX1619 “on the fly,” where external hardware has
forced new states at the ADD0 and ADD1 address pins
prior to the software POR. The new address takes effect
less than 100μs after the SPOR transmission stop condition.
Power-Up Defaults:
Interrupt latch is cleared.
Address select pins are sampled.
ADC begins auto-converting at a 0.25Hz rate.
Command byte is set to 01h to facilitate quick
remote Receive Byte queries.
T
HIGH
and T
LOW
registers are set to +127°C and
-55°C, respectively.
T
MAX
and T
HYST
are set to +100°C and +95°C,
respectively.
OVERT
polarity is active low.
M
Remote/Loc al Temperature S ensor with Dual-
Alarm Outputs and S MBus S erial Interfac e
______________________________________________________________________________________
15
Table 8. RLTS and RRTE Temperature Register Update Timing Chart
n/a (0.25Hz)
NEW CONVERSION
FREQUENCY (CHANGED VIA
WRITE TO WCRW)
Power-on reset
One-shot command, while idling
between automatic conversions
Autoconvert
OPERATING MODE
CONVERSION INITIATED BY:
156ms max
TIME UNTIL RLTS AND RRTE
ARE UPDATED
156ms max
n/a
Autoconvert
When current conversion is
complete (1-shot is ignored)
20sec
10sec
5sec
2.5sec
1.25sec
625ms
312.5ms
237.5ms
156ms
156ms
156ms
n/a
0.0625Hz
0.125Hz
0.25Hz
0.5Hz
1Hz
2Hz
4Hz
8Hz
n/a
n/a
n/a
Rate timer
Rate timer
Autoconvert
Autoconvert
One-shot command that occurs
during a conversion
Autoconvert
Rate timer
Rate timer
Autoconvert
Autoconvert
Rate timer
Rate timer
Autoconvert
Autoconvert
Rate timer
Rate timer
Autoconvert
Autoconvert
STBY
pin
RUN/STOP bit
Hardware Standby
Software Standby
One-shot command
Software Standby
Table 9. POR Slave Address Decoding
(ADD0 and ADD1)
Note:
High-Z means that the pin is left unconnected and floating.
0011 001
0011 010
High-Z
V
CC
GND
GND
0011 000
ADDRESS
0101 001
0101 010
GND
High-Z
High-Z
High-Z
0101 011
1001 100
V
CC
GND
High-Z
V
CC
1001 101
1001 110
High-Z
V
CC
V
CC
V
CC
GND
GND
ADD0
ADD1
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MAX1619MEE 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: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
MAX1619MEE+ 功能描述:板上安裝溫度傳感器 Remote/Local Temp Sensor w Dual Alarm RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
MAX1619MEE+T 功能描述:板上安裝溫度傳感器 Remote/Local Temp Sensor w Dual Alarm RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
MAX1619MEE-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: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
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