tmp19a43fd TOSHIBA Semiconductor CORPORATION, tmp19a43fd Datasheet - Page 100

• Manufacturer Part Number: tmp19a43fd
• Description: 32-bit Risc Microprocessor
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Parameter
SCL clock frequency
Hold time for START condition
SCL clock low width (Input) (Note 1)
SCL clock high width (Output) (Note 2) tHIGH
Setup time for a repeated START
condition
Data hold time (Input) (Note 3, 4)
Data setup time
Setup time for STOP condition
Bus free time between STOP and
START conditions
5.11
Note 1:
Note 2:
Note 3:
Note 4: The Philips I
Note 5:
Notice: On I
400Khz. Internal SCL clock Frequency setting should be shown above Note1 & Note2.
300 ns for the SDA signal to bridge the undefined region of the fall edge of SCL. However, this
SBI does not satisfy this requirement. Also, the output buffer for SCL does not incorporate slope
control of the falling edges; therefore, the equipment manufacturer should design so that the input
data hold time shown in the table is satisfied, including tr/tf of the SCL and SDA lines.
SBI Timing
SBI0CR.
In the table below, the letters x represent the fsys periods, respectively.
I2C mode
n denotes the value of n programmed into the SCK (SCL output frequency select) field in the
2
SDA
SCL
C-bus specification, Maximum Speed of Standard Mode is 100KHz ,Fast mode is
SCL clock low width (output) is calculated with
SCL clock high width (output) is calculated with
The output data hold time is equal to 12x
Software-dependent
S: START condition
Sr: Repeated START condition
P: STOP condition
2
C-bus specification states that a device must internally provide a hold time of at least
S
t
HD;STA
t
f
tHD:STA
tLOW
tHD;DAT
tSU;DAT
tSU;STO
Symbol
tSCø
tSU;STA (Note 5)
tBUF
t
LOW
t
SU;DAT
Equation
Min
0
(Note 5)
t
SCL
t
r
t
HIGH
TMP19A43 5-29
Max
t
HD;DAT
Standard mode
Min
0
4.0
4.7
4.0
4.7
0.0
250
4.0
4.7
: (2
(2
n-1
n-1
Max
100
+58)/(fsys/2)
+12)/(fsys/2)
t
SU;STA
Sr
Fast mode
Min
0
0.6
1.3
0.6
0.6
0.0
100
0.6
1.3
t
SU;STO
TMP19A43
Max
400
P
t
BUF
Unit
kHz
ns
s
s
s
s
s
s
s