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参数资料
| 型号： | MPXY8000 |
| 厂商： | Motorola, Inc. |
| 英文描述： | Tire Pressure Monitoring Sensor Temperature Compensated |
| 中文描述： | 胎压监测传感器温度补偿 |
| 文件页数： | 5/16页 |
| 文件大小： | 142K |
| 代理商： | MPXY8000 |
Sensor Devices
Freescale Semiconductor
5
MPXY8000
An analog to digital (A/D) conversion can be accomplished
with eight (8) different threshold levels in a successive
approximation algorithm; or the OUT pin can be set to trip at
some alarm level. The voltage on the sample capacitor will
maintain long enough for a single 8-bit conversion, but may
need to be refreshed with a new measured reading if the read
interval is longer than the specified hold time, t
SH
.
The counter that determines the number of clock pulses
into the device is reset whenever the device is placed into the
Measure Pressure or Measure Temperature Modes. This
provides a means to reset the data transfer count in case the
clock stream is corrupted during a transmission. In these two
modes the DATA and CLK pins should not be clocked to
reduce noise in the captured pressure or temperature data.
Any change in the DAR contents should be done during the
Standby or Output Read Modes.
Both the serial bit counter and the state of the DAR are
undefined following power up of the device. The serial bit
counter can be reset by cycling either the SO pin or the
S1/VPP pin to a high level and then back low. The DAR can
then be reset to the lowest level by holding the DATA pin low
while bursting the CLK pin with eight (8) clock pulses.
Figure 5. Serial Data Timing
Pressure Sensor Output
The pressure channel compares the output of its analog
measurement circuit to the D/A reference voltage. The device
is calibrated at two different nominal values depending on the
calibration option.
Temperature Sensor Output
The temperature channel compares the output of a
positive temperature coefficient (PTC) resistor driven by a
switched current source. The current source is only active
when the temperature channel is selected.
APPLICATIONS
Suggested application example is shown in Figure 6.
Figure 6. Application Example
CLK
Data
Serial Data
DAR Load *
DAR *
(* Denotes Internal Signal
1
2
3
4
5
6
7
8
MSB
MSB
Data
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
LSB
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
LSB
+
3.0 V
0.1
μ
F
MPXY8000
Series
Sensor
V
DD
V
SS
Optional
State Machine
or MCU
RF
Transmtter
S1
S0
CLK
RST
OUT
Data
Motion
Sense
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| MPXY8040A6T1 | Tire Pressure Monitoring Sensor Temperature Compensated |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPXY8020A | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Tire Pressure Monitoring Sensor Temperature Compensated |
| MPXY8020A_03 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Tire Pressure Monitoring Sensor Temperature Compensated and Calibrated, Fully Integrated Digital Output |
| MPXY8020A6T1 | 功能描述:板上安装压力/力传感器 TPM GULL WING RoHS:否 制造商:Honeywell 工作压力:0 bar to 4 bar 压力类型:Gage 准确性:+ / - 0.25 % 输出类型:Digital 安装风格:Through Hole 工作电源电压:5 V 封装 / 箱体:SIP 端口类型:Dual Radial Barbed, Same sides |
| MPXY8020A6U | 功能描述:板上安装压力/力传感器 TPM GULL WING RoHS:否 制造商:Honeywell 工作压力:0 bar to 4 bar 压力类型:Gage 准确性:+ / - 0.25 % 输出类型:Digital 安装风格:Through Hole 工作电源电压:5 V 封装 / 箱体:SIP 端口类型:Dual Radial Barbed, Same sides |
| MPXY8021A | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Tire Pressure Monitoring Sensor Temperature Compensated and Calibrated, Fully Integrated, Digital Output |
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