RX − 8801 SA / JE
Page - 5 ETM26E-03
7.2. AC 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 fSCL 400 kHz
Start condition setup time tSU;STA 0.6
μs
Start condition hold time tHD;STA 0.6
μs
Data setup time tSU;DAT 100 ns
Data hold time tHD;DAT 0 900 ns
Stop condition setup time tSU;STO 0.6
μs
Bus idle time between
start condition and stop condition
t
BUF 1.3
μs
Time when SCL = "L"
t
LOW 1.3
μs
Time when SCL = "H"
t
HIGH 0.6
μs
Rise time for SCL and SDA tr 0.3
μs
Fall time for SCL and SDA tf 0.3
μs
Allowable spike time on bus tSP 50 ns
FOUT duty tW /t 50% of VDD level 40 50 60 %
Timing chart
t
HD ; DAT
t
SU ; DAT
t
HD ; STA
tLOW tHIGH 1 / fSCL
t
r
t
f
SU ; STA
SD
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
SU ; STA
(S)
BIT 0
LSB
(R/W)
(S)
t
SP
Caution: When accessing this device, all communication from transmitting the start condition to transmitting the stop
condition after access should be completed within 0.95 seconds.
If such communication requires 0.95 seconds or longer, the I
2
C bus interface is reset by the internal bus
timeout function.
