CHAPTER 28 ELECTRICAL SPECIFICATIONS
User’s Manual U16896EJ2V0UD
670
I
2
C Bus Mode (
μ
PD703302Y, 70F3302Y Only)
(T
A
=
−
40 to +85
°
C, V
DD
= EV
DD
= AV
REF0
= 2.7 to 5.5 V, V
SS
= EV
SS
= AV
SS
= 0 V, C
L
= 50 pF)
Normal Mode
High-Speed Mode
Parameter Symbol
MIN. MAX. MIN. MAX.
Unit
SCL0 clock frequency
f
CLK
0 100 0 400
kHz
Bus free time
(Between start and stop conditions)
t
BUF
<111> 4.7
−
1.3
−
μ
s
Hold time
Note 1
t
HD:STA
<112> 4.0
−
0.6
−
μ
s
SCL0 clock low-level width
t
LOW
<113> 4.7
−
1.3
−
μ
s
SCL0 clock high-level width
t
HIGH
<114> 4.0
−
0.6
−
μ
s
Setup time for start/restart
conditions
t
SU:STA
<115> 4.7
−
0.6
−
μ
s
CBUS compatible
master
5.0
−
−
−
μ
s
Data hold time
I
2
C mode
t
HD:DAT
<116>
0
Note 2
−
0
Note 2
0.9
Note 3
μ
s
Data setup time
t
SU:DAT
<117> 250
−
100
Note 4
−
ns
SDA0 and SCL0 signal rise time
t
R
<118>
−
1000
20 + 0.1Cb
Note 5
300
ns
SDA0 and SCL0 signal fall time
t
F
<119>
−
300
20 + 0.1Cb
Note 5
300
ns
Stop condition setup time
t
SU:STO
<120> 4.0
−
0.6
−
μ
s
Pulse width of spike suppressed by
input filter
t
SP
<121>
−
−
0 50
ns
Capacitance load of each bus line
Cb
−
400
−
400 pF
Notes 1.
At the start condition, the first clock pulse is generated after the hold time.
2.
The system requires a minimum of 300 ns hold time internally for the SDA0 signal (at V
IHmin.
of SCL0
signal) in order to occupy the undefined area at the falling edge of SCL0.
3.
If the system does not extend the SCL0 signal low hold time (t
LOW
), only the maximum data hold time
(t
HD
:
DAT
) needs to be satisfied.
4.
The high-speed mode I
2
C bus can be used in the normal-mode I
2
C bus system. In this case, set the high-
speed mode I
2
C bus so that it meets the following conditions.
•
If the system does not extend the SCL0 signal’s low state hold time:
t
SU
:
DAT
≥
250 ns
•
If the system extends the SCL0 signal’s low state hold time:
Transmit the following data bit to the SDA0 line prior to the SCL0 line release (t
Rmax.
+ t
SU:DAT
= 1000 +
250 = 1250 ns: Normal mode I
2
C bus specification).
5.
Cb: Total capacitance of one bus line (unit: pF)
Содержание ?PD703302
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