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参数资料
| 型号： | MAX6604ATA+TW |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/15页 |
| 文件大小： | 172K |
| 描述： | IC TEMP SENSOR DDR MEMORY 8TDFN |
| 标准包装： | 2,500 |
| 功能： | 温度监控系统（传感器），DIMM DDR 内存 |
| 传感器类型： | 内部 |
| 感应温度： | -20°C ~ 125°C |
| 精确度： | ±3°C（最小值） |
| 输出类型： | 2 线串行，I²C?/SMBUS? |
| 输出警报： | 是 |
| 输出风扇： | 无 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -20°C ~ 125°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
Detailed Description
The MAX6604 high-precision temperature sensor con-
tinuously monitors temperature and updates the
temperature data eight times per second. The device
functions as a slave on the SMBus/I
2
C-compatible inter-
face. The master can read the temperature data at any
time through the digital interface. The MAX6604 also
features an open-drain, event-output indicator for tem-
perature-threshold monitoring.
Serial Interface
SMBus/I
2
C
The MAX6604 is readable and programmable through
the SMBus/I
2
C-compatible interface. The device func-
tions as a slave on the interface. Figure 1 shows the
general timing diagram of the clock (SCL) and the data
(SDA) signals for the SMBus/I
2
C-compatible interface.
The SDA and SCL bus lines are at logic-high when the
bus is not in use. Pullup resistors from the bus lines to
the supply are required when push-pull circuitry is not
driving the lines. The data on the SDA line can change
only when the SCL line is low. Start and stop conditions
occur when SDA changes state while the SCL line is
high (Figure 1). Data on SDA must be stable for the
duration of the setup time (t
SU:DAT
) before SCL goes
high. Data on SDA is sampled when SCL toggles high
with data on SDA is stable for the duration of the hold
time (t
HD:DAT
). Note that a segment of data is transmit-
ted in an 8-bit byte. A total of nine clock cycles are
required to transfer a byte to the MAX6604. Since the
MAX6604 employs 16-bit registers, data is transmitted
or received in two 8-bit bytes (16 bits). The device
acknowledges the successful receipt for each byte by
pulling the SDA line low (issuing an ACK) during the
ninth clock cycle of each byte transfer.
From a software perspective, the MAX6604 appears as a
set of 16-bit registers that contain temperature data,
alarm threshold values, and control bits. A standard
SMBus/I
2
C-compatible, 2-wire serial interface reads tem-
perature data and writes control bits and alarm threshold
data. Each device responds to its own SMBus/I
2
C slave
address, which is selected using A0, A1, and A2. See
the Device Addressing section for details.
The MAX6604 employs standard I
2
C/SMBus protocols
using 16-bit registers: write word and read word. Write
a word of data (16 bits) by first sending MAX6604s I
2
C
address (0011-A2-A1-A0-0), then sending the 8-bit
command byte, followed by the first 8-bit data byte.
Note that the slave issues an acknowledge after each
byte is written. After the first 8-bit data byte is written,
the MAX6604 also returns an acknowledge. However,
the master does not generate a stop condition after the
first byte has been written. The master continues to
write the second byte of data with the slave acknowl-
edging. After the second byte has been written, the
master then generates a stop condition. See Figure 2.
To read a word of data, the master generates a new
start condition and sends MAX6604s I
2
C address with
the R/W bit low (0011-A2-A1-A0-0), then sends the 8-bit
command byte. Again, the MAX6604 issues an ACK for
each byte received. The master again sends the device
address with the R/W bit high (0011-A2-A1-A0-1), fol-
lowing an acknowledge. Next, the master reads the
contents of the selected register, beginning with the
most significant bit, and acknowledges if the most sig-
nificant data byte is successfully received. Finally, the
master reads the least significant data byte and issues
a NACK, followed by a stop condition to terminate the
read cycle.
Precision Temperature Monitor for
DDR Memory Modules
_______________________________________________________________________________________ 5
START CONDITION
REPEATED START CONDITION
STOP CONDITION
t
HD:STA
t
R
t
F
t
LOW
t
SU:DAT
t
HD:DAT
t
SU:STA
t
HD:STA
t
SU:STO
t
BUF
SDA
SCL
Figure 1. SDA and SCL Timing Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6605MXK | 制造商:Maxim Integrated Products 功能描述:5 PINS SC70 PKG - Rail/Tube |
| MAX6605MXK/V+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX6605MXK/V+T | 功能描述:板上安装温度传感器 Low-Power Analog Temperature Sensor 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 |
| MAX6605MXK+ | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR ANLG 5PIN SC-70 - Rail/Tube |
| MAX6605MXK+T | 功能描述:板上安装温度传感器 Low-Power Analog Temperature Sensor 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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