MPL115A1 Просмотр технического описания (PDF) - Freescale Semiconductor
Номер в каталоге
Компоненты Описание
производитель
MPL115A1 Datasheet PDF : 16 Pages
| |||
SPI Read operations are performed by sending the required address with a leading Read bit set to ‘1’. SPI operations require
that each byte be addressed individually. All data is transmitted most significant bit first.
Table 5. Example SPI Read Commands
Command
Read Pressure MSB
Binary
1000000X
HEX(1)
0x80
Read Pressure LSB
1000001X
0x82
Read Temperature MSB
1000010X
0x84
Read Temperature LSB
1000011X
0x86
Read Coefficient data byte 1
1000100X
0x88
X = don’t care
1. The command byte needs to be paired with a 0x00 as part of the SPI exchange to complete the passing of stated
command.
3.5 SPI Timing
Table 6 and Figure 3 describe the timing requirements for the SPI system.
Table 6. SPI Timing
Ref
Function
1 Operating Frequency
2 SCLK Period
3 SCLK High time
4 SCLK Low time
5 Enable lead time
6 Enable lag time
7 Data setup time
8 Data hold time
9 Data valid (after SCLK low edge)
10 Width CS High
Symbol Min
Max
Of
—
8
tSCLK 125
—
tCLKH 62.5
—
tCLKL 62.5
—
tSCS
125
—
tHCS
125
—
tSET
30
—
tHOLD
30
—
tDDLY
—
32
tWCS
30
—
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
CS
SCLK
DIN
DOUT
MPL115A1
8
Figure 3. SPI Timing Diagram
Sensors
Freescale Semiconductor, Inc.
Share Link: 