STR750FXX STMICROELECTRONICS [STMicroelectronics], STR750FXX Datasheet - Page 69
STR750FXX
Manufacturer Part Number
STR750FXX
Description
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.STR750FXX.pdf
(81 pages)
- Current page: 69 of 81
- Download datasheet (2Mb)
STR750Fxx STR751Fxx STR752Fxx STR755Fxx
Refer to I/O port characteristics for more details on the input/output alternate function
characteristics (SDA and SCL).
Table 41.
1. f
2. Data based on standard I
3. The maximum hold time of the START condition has only to be met if the interface does not stretch the low
4. The device must internally provide a hold time of at least 300 ns for the SDA signal in order to bridge the
Figure 40. Typical application with I
1. Measurement points are done at CMOS levels: 0.3xV
t
w(STO:STA)
Symbol
t
t
t
t
t
w(SCLH)
w(SCLL)
t
su(SDA)
t
t
su(STO)
t
t
t
su(STA)
period of SCL signal.
undefined region of the falling edge of SCL.
h(SDA)
r(SDA)
h(STA)
r(SCL)
f(SDA)
f(SCL)
PCLK
C
not possible to power off the STR7x while some another I
powered on: otherwise, the STR7x will be powered by the protection diode.
b
SDA
SCL
I
, must be at least 8 MHz to achieve max fast I
2
t
C BUS
f(SDA)
SCL clock low time
SCL clock high time
SDA setup time
SDA data hold time
SDA and SCL rise time
SDA and SCL fall time
START condition hold time
Repeated START condition setup time
STOP condition setup time
STOP to START condition time (bus free)
Capacitive load for each bus line
SDA and SCL characteristics
t
h(STA)
START
4.7kΩ
t
w(SCKH)
t
r(SDA)
V
2
DD
C protocol requirement, not tested in production.
t
w(SCKL)
Parameter
4.7kΩ
V
DD
t
su(SDA)
t
r(SCK)
100Ω
100Ω
2
C bus and timing diagram
t
h(SDA)
t
f(SCK)
SDA
SCL
2
C speed (400 kHz).
DD
STRT75X
and 0.7xV
Standard mode
Min
250
0
4.7
4.0
4.0
4.7
4.0
4.7
(3)
(2)
DD
I
2
C
.
Max
1000
300
400
2
C master node remains
(2)
t
su(STA)
t
su(STO)
20+0.1C
20+0.1C
Fast mode I
Electrical parameters
Min
100
0
1.3
0.6
0.6
0.6
0.6
1.3
t
(4)
w(STO:STA)
STOP
(2)
REPEATED START
b
b
Max
900
300
300
400
2
START
C
(3)
(1)
(2)
Unit
69/81
pF
µs
ns
µs
µs
µs
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