SN260 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'SN260' PDF : 88 Pages View PDF
SPI protocol
Figure 6. SPI protocol timing waveform
SN260
Table 14 lists the timing parameters of the SPI protocol. These parameters are illustrated in
Figure 6.
Table 14. SPI protocol timing parameters
Parameter
Description
t1 (a) Wake handshake, while 260 is awake
t1 (b)
t2
Wake handshake, while 260 is asleep
Wake handshake finish
t3
Reset pulse width
t4
Startup time
t5
nHOST_INT de-asserting after Command
t6
Clock rate
t7
Wait section
t8
nHOST_INT de-asserting after Response
t9
nHOST_INT asserting after transaction
t10
Inter-command spacing
Min.
1.1
8
13
200
25
20
25
1
Typ.
Max. Unit
133
150
s
7.3
10
ms
1.2
25
s
s
250
1500 ms
35
75
s
ns
755
200000 s
130
800
s
70
800
s
ms
6.4
Data format
The data format, also referred to as a command, is the same for both the Command section
and the Response section. The data format of the SPI Protocol is straightforward, as
illustrated in Figure 7.
Figure 7. SPI protocol data format
The total length of a command must not exceed 128 bytes.
All commands must begin with the SPI Byte. Some commands are only two bytes—that is,
they contain the SPI Byte and Frame Terminator only.
26/88
Share Link: 
