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RX − 8564 LC
Page − 6
ETM12E-01
8.2. AC electrical characteristics
* Unless otherwise specified, GND = 0 V , V
DD
= 1.8 V to 5.5 V
, Ta = −40 °C to +85 °C
Item Symbol Condition Min. Typ. Max. Unit
SCL clock frequency f
SCL
400 kHz
Start condition set-up time t
SU; STA
0.6
µs
Start condition hold time t
HD; STA
0.6
µs
Data set-up time t
SU; DAT
100 ns
Data hold time t
HD; DAT
0 ns
Stop condition set-up time t
SU; STO
0.6
µs
Bus free time between a STOP
and START condition
t
BUF
1.3
µs
SCL "L" time t
LOW
1.3
µs
SCL "H" time t
HIGH
0.6
µs
SCL and SDA rise time tr 0.3
µs
SCL and SDA fall time tf 0.3
µs
Tolerance spike time on bus t
SP
50 ns
Timing chart
t
HD ; DAT
t
SU ; DAT
t
HD ; STA
t
LOW
t
HIGH
1 / f
SCL
t
r
t
f
t
SU ; ST
A
SD
A
SCL
START
CONDITION
(S)
BIT 7
MSB
(A7)
BIT 6
(A6)
ACK
(A)
Protocol
t
BUF
t
SU ; STO
STOP
CONDITION
(P)
START
CONDITION
(S)
(P)
(A)
t
HD ; STA
t
SU ; ST
A
(S)
BIT 0
LSB
(R/W)
(S)
t
SP
Note : I
2
C access time between a START and a START condition or between a START and a STOP condition to this
device must be less than one second.