Datasheet

t
SU(STA)
SCL
SDA
t
w(H)
t
w(L)
t
f
t
r
t
(BUF)
t
r
t
d(STA)
REPEATED
START
t
h(DAT)
t
su(DAT)
t
f
t
su(STOP)
STOP START
bq27510-G2
SLUS948 –AUGUST 2010 www.ti.com
400 kHz I
2
C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICS
T
A
= –40°C to 85°C, 2.4 V < V
CC
< 2.6 V; typical values at T
A
= 25°C and V
CC
= 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
r
SCL/SDA rise time 300 ns
t
f
SCL/SDA fall time 300 ns
t
w(H)
SCL pulse width (high) 600 ns
t
w(L)
SCL pulse width (low) 1.3 ms
t
su(STA)
Setup for repeated start 600 ns
t
d(STA)
Start to first falling edge of SCL 600 ns
t
su(DAT)
Data setup time 100 ns
t
h(DAT)
Data hold time 0 ns
t
su(STOP)
Setup time for stop 600 ns
t
BUF
Bus free time between stop and start 66 ms
f
SCL
Clock frequency 400 kHz
100 kHz I
2
C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICS
T
A
= –40°C to 85°C, 2.4 V < V
CC
< 2.6 V; typical values at T
A
= 25°C and V
CC
= 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
r
SCL/SDA rise time 1 µs
t
f
SCL/SDA fall time 300 ns
t
w(H)
SCL pulse width (high) 4 µs
t
w(L)
SCL pulse width (low) 4.7 ms
t
su(STA)
Setup for repeated start 4.7 µs
t
d(STA)
Start to first falling edge of SCL 4 µs
t
su(DAT)
Data setup time 250 ns
t
h(DAT)
Data hold time Receive mode 0 ns
Transmit mode 300
t
su(STOP)
Setup time for stop 4 µs
t
BUF
Bus free time between stop and start 4.7 ms
f
SCL
Clock frequency 10 100 kHz
t
BUSERR
Bus error timeout 17.3 21.2 s
Figure 1. I
2
C-Compatible Interface Timing Diagrams
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