Datasheet

TCN75A
DS21935A-page 4 © 2005 Microchip Technology Inc.
Timing Diagram
SERIAL INTERFACE TIMING SPECIFICATIONS
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
(SCLK, SDA)
Fall Time t
F
20 — 300 ns 90% to 10% of V
DD
(SCLK, SDA)
Data Setup Before SCLK High t
SU-DATA
0.1 — — µs
Data Hold After SCLK 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
IDLE
1.3 — — µs
t
SU-START
t
H-START
t
SU-DATA
t
SU-STOP
t
IDLE
SCLK
SDA
SCLK
SDA
t
H-DATA
t
R
,t
F
t
SC
SCLK
SDA
t
HIGH
t
LOW
START Condition
STOP Condition
Data Transmission
t
OUT