Freescale Semiconductor Accelerometer Cube Demo MMA9559LKUBE MMA9559LKUBE 데이터 시트
제품 코드
MMA9559LKUBE
MMA955xL
Sensors
20
Freescale Semiconductor, Inc.
4.14
Slave SPI Timing
The following table
describes the timing requirements for the SPI system. The “#” column refers to the numbered time period in
Figure 10. SPI slave timing
Table 14. Slave SPI timing
#
Function
Symbol
Min
Max
Unit
—
Operating frequency
f
op
0
F
OPH
/4
Hz
1
SCLK period
t
SCLK
4
—
t
CYCH
2
Enable lead time
t
Lead
0.5
—
t
CYCH
3
Enable lag time
t
Lag
0.5
—
t
CYCH
4
Clock (SCLK) high or low time
t
WSCLK
200
—
ns
5
Data-setup time (inputs)
t
SU
15
—
ns
6
Data-hold time (inputs)
t
HI
25
—
ns
7
Access time
t
a
—
25
ns
8
SDO-disable time
t
dis
—
25
ns
9
Data valid (after SCLK edge)
t
v
—
25
ns
10
Data-hold time (outputs)
t
HO
0
—
ns
11
Rise time
Input
Output
Output
t
RI
t
RO
—
—
—
25
25
25
ns
ns
ns
12
Fall time
Input
Output
Output
t
FI
t
FO
—
—
—
25
25
25
ns
ns
ns
SCLK
(INPUT)
SDI
(INPUT)
SDO
(OUTPUT)
SS
(INPUT)
MSB IN
BIT 6 . . . 1
LSB IN
MSB OUT
SLAVE LSB OUT
BIT 6 . . . 1
NOTE:
SLAVE
SEE
NOTE
1. Not defined but normally MSB of character just received.
12
1
<
11
3
4
2
4
7
5
6
9
8
10
10