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| 型号： | SE98ATL,147 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/43页 |
| 文件大小： | 849K |
| 描述： | IC TEMP SENSOR DDR 3.6V 8-HXSON |
| 标准包装： | 1 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部 |
| 感应温度： | -40°C ~ 125°C |
| 精确度： | ±4°C（最小值） |
| 拓扑： | ADC（三角积分型），寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 1.7 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 |
| 其它名称： | 568-4780-6 |
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SE98A_4
?NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 25 November 2009
6 of 43
NXP Semiconductors
SE98A
DDR memory module temp sensor, 1.7 V to 3.6 V
7.3 EVENT
output condition
The EVENT
output indicates conditions such as the temperature crossing a predefined
boundary. The EVENT
modes are very configurable and selected using the configuration
register (CONFIG). The interrupt mode or comparator mode is selected using CONFIG[0],
using either TCRIT/UPPER/LOWER or TCRIT only temperature bands (CONFIG[2]) as
modified by hysteresis (CONFIG[10:9]). The UPPER/LOWER (CONFIG[6]) and TCRIT
(CONFIG[7]) bands can be locked. Figure 6
shows an example of the measured
temperature versus time, with the corresponding behavior of the EVENT
output in each of
these modes.
Upon device power-up, the default condition for the EVENT
output is high-impedance to
prevent spurious or unwanted alarms, but can be later enabled (CONFIG[3]). EVENT
output polarity can be set to active HIGH or active LOW (CONFIG[1]). EVENT
status can
be read (CONFIG[4]) and cleared (CONFIG[5]).
" Advisory notification:
NXP device: After power-up, bit 3 (1) and bit 2 or bit 0 (leave as 0 or 1) can be set
at the same time (e.g., in same byte) but once bit 3 is set (1) then changing bit 2 or
bit 0 has no effect on the device operation.
Competitor device: Does not require that bit 3 be cleared (e.g., set back to (0))
before changing bit 2 or bit 0.
Work-around: In order to change bit 2 or bit 0 once bit 3 (1) is set, bit 3 (0) must be
cleared in one byte and then change bit 2 or bit 0 and reset bit 3 (1) in the next
byte.
SE98B will allow bit 2 or bit 0 to be changed even if bit 3 is set.
If the device enters Shutdown mode (CONFIG[8]) with asserted EVENT
output, the output
remains asserted during shutdown.
7.3.1 EVENT
pin output voltage levels and resistor sizing
The EVENT
open-drain output is typically pulled up to a voltage level from 0.9 V to 3.6 V
with an external pull-up resistor, but there is no real lower limit on the pull-up voltage for
the EVENT
pin since it is simply an open-drain output. It could be pulled up to 0.1 V and
would not affect the output. From the system perspective, there will be a practical limit.
That limit will be the voltage necessary for the device monitoring the interrupt pin to detect
a HIGH on its input. A possible practical limit for a CMOS input would be 0.4 V. Another
thing to consider is the value of the pull-up resistor. When a low supply voltage is applied
to the drain (through the pull-up resistor) it is important to use a higher value pull-up
resistor, to allow a larger maximum signal swing on the EVENT
pin.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SE98ATP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DDR memory module temp sensor, 1.7 V to 3.6 V |
| SE98ATP,147 | 功能描述:板上安装温度传感器 I2 CLOCAL +/-1OC 1.7-3.6V TSDIMM 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 |
| SE98ATP,547 | 功能描述:板上安装温度传感器 PROG TWI DIG 3.6V 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 |
| SE98PW | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:SO-DIMM SMBus/I2C-bus temperature sensor |
| SE98PW,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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