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| 型号： | SE97BTP,547 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 12/53页 |
| 文件大小： | 386K |
| 描述： | IC TEMP SENSOR DIMM 8HWSON |
| 产品培训模块： | I²C Bus Fundamentals |
| 特色产品： | NXP - I2C Interface |
| 标准包装： | 1 |
| 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： | -40°C ~ 125°C |
| 精确度： | ±3°C（最小值） |
| 拓扑： | ADC（三角积分型），比较器，寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-WSON |
| 包装： | 标准包装 |
| 产品目录页面： | 847 (CN2011-ZH PDF) |
| 其它名称： | 568-5055-6 |
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SE97B_1
?NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 27 January 2010
12 of 53
NXP Semiconductors
SE97B
DDR memory module temp sensor with integrated SPD
Table 5
shows the default values and the example value to be programmed to these
registers.
7.7 SMBus TIMEOUT
The SE97B supports SMBus TIMEOUT feature. If the host holds SCL LOW more than
35 ms, the SE97B would reset its internal state machine to the bus IDLE state to prevent a
system bus hang-up. This feature is turned on by default and release SDA. The SMBus
TIMEOUT can be disabled by writing a 1 to SMBUS[7].
Remark: When SMBus TIMEOUT is enabled, the I
2
C-bus minimum bus speed is limited
by the SMBus TIMEOUT specification limit of 10 kHz.
The SE97B has no SCL driver, so it cannot hold the SCL line LOW.
7.8 SMBus Alert Response Address (ARA)
The SE97B supports SMBus ALERT when it is programmed for the Interrupt mode and
when the EVENT
polarity bit is set to 0. In Comparator mode or when the EVENT
polarity
bit is set to 1, the SMBus ALERT address is not acknowledged. The EVENT
pin can be
ANDed with other EVENT
or interrupt signals from other slave devices to signal their
intention to communicate with the host controller. When the host detects EVENT
or other
interrupt signal LOW, it issues an ARA to which a slave device would respond with its
address. When there are multiple slave devices generating an ALERT the SE97B
performs bus arbitration with the other slaves. If it wins the bus, it responds to the ARA
and then clears the EVENT
pin. This feature is turned off by default and can be enabled
by writing a 0 to SMBUS[0].
Remark: Either in comparator mode or when the SE97B crosses the critical temperature,
the host must also read the EVENT
status bit and provide remedy to the situation by
bringing the temperature to within the alarm window or below the critical temperature if
that bit is set. Otherwise, the EVENT
pin will not get de-asserted.
Table 5.
Registers to be initialized
Register
Default value
Example value
Description
01h
0000h
0209h
Configuration register
" hysteresis = 1.5 ?/SPAN>C
" EVENT
output = Interrupt mode
" EVENT
output is enabled
02h
0000h
0550h
Upper Boundary Alarm Trip register = 85 癈
03h
0000h
1F40h
Lower Boundary Alarm Trip register = 20 癈
04h
0000h
05F0h
Critical Alarm Trip register = 95 癈
22h
21h
21h
SMBus register = no change
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SE97PW | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DDR memory module temp sensor with integrated SPD, 3.3 V |
| SE97PW,118 | 功能描述:板上安装温度传感器 I2C LOCAL +/- 2OC 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 |
| SE97PW-T | 功能描述:板上安装温度传感器 I2C LOCAL +/- 2OC TS +SPD DIMM 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 |
| SE97TK | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DDR memory module temp sensor with integrated SPD, 3.3 V |
| SE97TK,118 | 功能描述:板上安装温度传感器 I2C LOCAL +/- 2OC 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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