Specifications

Ra-01SH Specification V1.1
Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved
第 9 页 共 17 页
·SPI Interface characteristics
symbol
Description
Condition
Mix
Typical
Max
Unit
Fsck
SCK frequency
-
-
-
10
MH
z
tch
SCK high time
-
50
-
-
ns
tcl
SCK low time
-
50
-
-
ns
trise
SCK rise time
-
-
5
-
ns
tfall
SCK fall time
-
-
5
-
ns
tsetup
MOSI
establishment
time
From MOSI
change to SCK
rising edge
30
-
-
ns
thold
MOSI
maintenance
time
Change from rising
edge of SCK to
MOSI
20
-
-
ns
tnsetup
NSS
establishment
time
From NSS falling
edge to SCK rising
edge
30
-
-
ns
tnhold
NSS
maintenance
time
From SCK falling
edge to NSS rising
edge, normal
mode
100
-
-
ns
tnhigh
NSS high time
between spi
visits
-
20
-
-
ns
T_DAT
A
DATA
maintenance
and
establishment
time
-
250
-
-
ns