參數資料
型號： PPXY8300A6T1
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： Pressure Sensor
英文描述： DIFFERENTIAL, PEIZORESISTIVE PRESSURE SENSOR, RECTANGULAR, SURFACE MOUNT
封裝： SOIC-20
文件頁數： 161/162頁
文件大?。?/td> 4316K
代理商： PPXY8300A6T1
MPXY8300 Series
Sensors
98
Freescale Semiconductor
12.6.7
LF Control/Status Register 0 (LFCS0)
4
LFON
LF Sample On Time — This bit controls the length of time, tLFON, that the LF sampling is on when in the carrier
detect mode.
0tLFON set at 25 periods of MFO (approximately 200μs).
1tLFON set at 265 periods of MFO (approximately 2120μs).
3–0
LFS[3:0]
LF Sample Reset Time — These bits control a 4-bit reset timer driven by the LFO divided by a binary number
to set the low power reset interval, tRST, as given in Table 12-8. The total time between the start of each sample
consists of (tLFON + tRST)
Table 12-8 LFR Reset Time — tRST
LFS3
LFS2
LFS1
LFS0
LFO
Divider
Nominal Reset Time (msec)
(LFRST = 0)
Nominal Reset Time (msec)
(LFRST = 1)
0
1
2
0
1
2
4
0
1
0
4
8
0
1
8
16
0
1
0
16
32
0
1
0
1
32
64
0
1
0
64
128
0
1
128
256
1
0
256
512
1
0
1
512
1024
1
0
1
0
1024
2048
1
0
1
2048
4096
1
0
4096
8192
1
0
1
8192
16384
1
0
16384
32768
1
LFR Detector is continuously OFF
7
6
5
4
3
2
1
0
R
LFDO
LFIE
LFOFF
LFRST
LFEN
LFWU8
LFLVL
LFAGC
W
Reset
0
= Unimplemented or Reserved
Figure 12-19 LF Control/Status Register 0 (LFCS0)
Table 12-9 LFCS0 Field Descriptions
Field
Description
7
LFDO
LFR Detector Output — This status bit follows the output of the LFR detector while it is sampled. If the LFR
detector is not powered up the result is forced to zero.
0
Output of LFR detector output is low.
1
Output of LFR detector output is high.
Table 12-7 LFCR Field Descriptions (Continued)
Field
Description
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