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参数资料
| 型号： | MAX6699UE38+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 温度/湿度传感器 |
| 英文描述： | 5-Channel Precision Temperature Monitor |
| 中文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT |
| 封装： | 4.40 MM, MO-153AB, LEAD FREE, TSSOP-16 |
| 文件页数： | 3/22页 |
| 文件大小： | 347K |
| 代理商： | MAX6699UE38+ |
MAX6699
5-Channel Precision Temperature Monitor
______________________________________________________________________________________
11
ALERT Response Address
The SMBus alert response interrupt pointer provides
quick fault identification for simple slave devices that
lack the complex logic needed to be a bus master.
Upon receiving an interrupt signal, the host master can
broadcast a receive byte transmission to the alert
response slave address (see the Slave Addresses sec-
tion). Then, any slave device that generated an inter-
rupt attempts to identify itself by putting its own
address on the bus.
The alert response can activate several different slave
devices simultaneously, similar to the I2C* General Call.
If more than one slave attempts to respond, bus arbitra-
tion rules apply, and the device with the lower address
code wins. The losing device does not generate an
acknowledgment and continues to hold the
ALERT line
low until cleared. (The conditions for clearing an alert
vary depending on the type of slave device.)
Successful completion of the alert response protocol
clears the output latch. If the condition that caused the
alert still exists, the MAX6699 reasserts the
ALERT
interrupt at the end of the next conversion.
OVERT Overtemperature Alarms
The MAX6699 has two overtemperature registers that
store remote alarm threshold data for the
OVERT output.
OVERT is asserted when a channel’s measured temper-
ature is greater than the value stored in the correspond-
ing threshold register.
OVERT remains asserted until the
temperature drops below the programmed threshold
minus 4°C hysteresis. An overtemperature output can
be used to activate a cooling fan, send a warning, initi-
ate clock throttling, or trigger a system shutdown to pre-
vent component damage. See Table 3 for the POR state
of the overtemperature threshold registers.
Command Byte Functions
The 8-bit Command Byte register (Table 3) is the mas-
ter index that points to the various other registers within
the MAX6699. This register’s POR state is 0000 0000.
Configuration Bytes Functions
There are three Read-Write Configuration registers
(Tables 4, 5, and 6) that can be used to control the
MAX6699’s operation.
Configuration 1 Register
The Configuration 1 register (Table 4) has several func-
tions. Bit 7(MSB) is used to put the MAX6699 either in
software standby mode (STOP) or continuous conversion
mode. Bit 6 resets all registers to their power-on reset
conditions and then clears itself. Bit 5 disables the
SMBus timeout. Bit 4 enables more frequent conversions
on channel 1, as described in the ADC Conversion
Sequence section. Bit 3 enables resistance cancellation
on channel 1. See the Series Resistance Cancellation
section for more details. The remaining bits of the
Configuration 1 register are not used. The POR state of
this register is 0000 0000 (00h).
Configuration 2 Register
The Configuration 2 register functions are described in
Table 5. Bits [6:0] are used to mask the
ALERT interrupt
output. Bit 6 masks the local alert interrupt and bit 5
through bit 2 mask the remote alert interrupts. The
power-up state of this register is 0000 0000 (00h).
Configuration 3 Register
Table 6 describes the Configuration 3 register. Bits 3
and 0 mask the
OVERT interrupt output for channels 4
and 1. The remaining bits, 7, 6, 5, 4, 2, and 1, are
reserved. The power-up state of this register is 0000
0000 (00h).
Status Registers Functions
Status registers 1, 2, and 3 (Tables 7, 8, and 9) indicate
which (if any) temperature thresholds have been
exceeded and if there is an open-circuit or short-circuit
fault detected with the external sense junctions. Status
register 1 indicates if the measured temperature has
exceeded the threshold limit set in the
ALERT registers
for the local or remote-sensing diodes. Status register 2
indicates if the measured temperature has exceeded
the threshold limit set in the
OVERT registers. Status
register 3 indicates if there is a diode fault (open or
short) in any of the remote-sensing channels.
Bits in the Alert Status register clear by a successful
read, but set again after the next conversion unless the
fault is corrected, either by a drop in the measured tem-
perature or an increase in the threshold temperature.
The
ALERT interrupt output follows the status flag bit.
Once the
ALERT output is asserted, it can be deassert-
ed by either reading Status register 1 or by successfully
responding to an alert response address. In both
*Purchase of I2C components from Maxim Integrated Products,
Inc., or one of its sublicensed Associated Companies, conveys
a license under the Philips I2C Patent Rights to use these com-
ponents in an I2C system, provided that the system conforms
to the I2C Standard Specification as defined by Philips.
相关PDF资料 |
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| MAX6699UE38+T | 5-Channel Precision Temperature Monitor |
| MAX6701ALKA+ | Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer |
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相关代理商/技术参数 |
参数描述 |
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| MAX6699UE38+ | 功能描述:板上安装温度传感器 5Ch Precision Temperature Monitor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6699UE38+T | 功能描述:板上安装温度传感器 5Ch Precision Temperature Monitor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6699UE38-T | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6699UE99 | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6699UE99+ | 功能描述:板上安装温度传感器 5Ch Precision Temperature Monitor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
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