Datasheet

 2010 Microchip Technology Inc. DS21935D-page 5
TCN75A
Timing Diagram
SERIAL INTERFACE TIMING SPECIFICATIONS (Note 1)
Electrical Specifications: Unless otherwise indicated, V
DD
= 2.7V to 5.5V, GND = Ground, T
A
= -40°C to +125°C,
C
L
= 80 pF and all limits measured to 50% point.
Parameters Sym Min Typ Max Units Conditions
2-Wire I
2
C™ Compatible Interface
Serial Port Frequency f
SC
0 — 400 kHz
Clock Period t
SC
2.5 — — µs
Low Clock t
LOW
1.3 — — µs
High Clock t
HIGH
0.6 — — µs
Rise Time t
R
20 — 300 ns 10% to 90% of V
DD
(SCL, SDA)
Fall Time t
F
20 — 300 ns 90% to 10% of V
DD
(SCL, SDA)
Data Setup Before SCL High t
SU-DATA
0.1 — — µs
Data Hold After SCL Low t
H-DATA
0——µs
Start Condition Setup Time t
SU-START
0.6 — — µs
Start Condition Hold Time t
H-START
0.6 — — µs
Stop Condition Setup Time t
SU-STOP
0.6 — — µs
Bus Idle t
B-FREE
1.3 — — µs
Note 1: Specification limits are characterized but not product tested.
t
SU-START
t H
-START
t
SU
-
D
A
TA
t
SU
-
S
TO
P
t
B-FREE
SCL
SDA
t
H-DATA
t
H
I
G
H
t LOW
t
R
,
t
F
Start Condition
Data Transmission
Stop Condition