
ST7735R
V0.2
24
2009-08-05
8.3 Serial interface characteristics (3-line serial)
CSX
V
IH
V
IL
T
CHW
T
CSH
T
OH
T
CSS
SCL
SDA
SDA
(DOUT)
T
SCC
T
SCYCW
/T
SCYCR
T
ACC
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
T
SDS
T
SDH
T
SHW
/T
SHR
T
SLW
/T
SLR
Figure 8.3.1 3-line serial interface timing
Ta=25
℃
, VDDI=1.65~3.7V, VDD=2.3~4.8V
Signal
Symbol
Parameter
Min
Max
Unit
Description
TCSS
Chip select setup time (write)
15
ns
TCSH
Chip select hold time (write)
15
ns
TCSS
Chip select setup time (read)
60
ns
TSCC
Chip select hold time (read)
65
ns
CSX
TCHW
Chip select “H” pulse width
40
ns
TSCYCW
Serial clock cycle (Write)
66
ns
TSHW
SCL “H” pulse width (Write)
15
ns
TSLW
SCL “L” pulse width (Write)
15
ns
TSCYCR
Serial clock cycle (Read)
150
ns
TSHR
SCL “H” pulse width (Read)
60
ns
SCL
TSLR
SCL “L” pulse width (Read)
60
ns
TSDS
Data setup time
10
ns
TSDH
Data hold time
10
ns
TACC
Access time
10
50
ns
SDA
(DIN)
(DOUT)
TOH
Output disable time
15
50
ns
For maximum CL=30pF
For minimum CL=8pF
Table 8.3.1 3-line Serial Interface Characteristics
Note : The rising time and falling time (Tr, Tf) of input signal are specified at 15 ns or less. Logic high and low levels are specified as 30%
and 70% of VDDI for Input signals.
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