MITSUBISHI < STD. LINEAR ICs >
M62320P,FP
8-BIT I/O EXPANDER for I C BUS
I C BUS CHARACTERISTICS
Limits
2
2
Symbol
f
SCL
t
BUF
t
HD:STA
t
LOW
t
HIGH
t
SU:STA
t
HD:DAT
t
SU:DAT
t
R
t
F
t
SU:STO
SCL clock frequency
Parameter
Min.
0
4.7
4.0
4.7
4.0
4.7
0
250
-
-
4.0
Max.
100
-
-
-
-
-
-
-
1000
300
-
Unit
KHz
µs
µs
µs
µs
µs
µs
ns
ns
ns
µs
Free time: the bus must be free before a new transmission can start
Hold time START Condition. After this period,the first clock pulse
is generated.
LOW period of the clock
HIGh period of the clock
Set-up time for START condition (Only relevant for a repeated
START condition)
Data Hold time
Data Set-up time
Rise time of SDA and SCL signals
Fall time of SDA and SCL signals
Set-up time for STOP condition
• Note that a transmitter must internally provide at least a hold time to bridge the undefined region
(max.300 ns) of the falling edge of SCL.
TIMING CHART
t
R,
t
F
t
BUF
V
IH
SDA
V
IL
t
HD:STA
SCL
t
SU:DAT
t
HD:DAT
t
SU:STA
t
SU:STO
V
IH
V
IL
t
LOW
START
t
HIGH
START
STOP
START
MITSUBISHI ELECTRIC
2/20,1998(rev) ( 4 / 9 )
MITSUBISHI [ MITSUBISHI ELECTRIC SEMICONDUCTOR ]
