NEC Renesas V850/SC1 User Manual page 711

2 2 2
(11) I C interface (I C0, I C1) timing
(T = –40 to +85°C, PORTV
A
µ µ µ µ PD703068Y, 703069Y, 703088Y, 703089Y: V
Parameter
SCLn clock frequency
Bus-free time (between
stop/start conditions)
Note 1
Hold time
SCLn clock low-level width
SCLn clock high-level width
Setup time for start/restart
conditions
Data hold CBUS
time compatible
master
2
I C mode
Data setup time
SDAn and SCLn signal rise
time
SDAn and SCLn signal fall
time
Stop condition setup time
Pulse width of spike
suppressed by input filter
Capacitance load of each
bus line
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 SDAn signal (at V
signal) in order to occupy the undefined area at the falling edge of SCLn.
3. If the system does not extend the SCLn signal low hold time (t
(t : ) needs to be satisfied.
HD DAT
4. The high-speed mode I
high-speed mode I
• If the system does not extend the SCLn signal's low state hold time:
≥ 250 ns
t :
SU DAT
• If the system extends the SCLn signal's low state hold time:
Transmit the following data bit to the SDAn line prior to the SCLn line release (t
1000 + 250 = 1250 ns: Normal mode I
5. Cb: Total capacitance of one bus line (unit: pF)
Remark n = 0, 1
CHAPTER 20 ELECTRICAL SPECIFICATIONS
= 3.0 to 5.5 V,
DD
= 3.5 to 5.5 V, µ µ µ µ PD70F3089Y: V
DD
Symbol Normal Mode
MIN.
– f 0
CLK
<81> t 4.7
BUF
<82> t 4.0
HD:STA
<83> t 4.7
LOW
<84> t 4.0
HIGH
<85> t 4.7
SU:STA
<86> t 5.0
HD:DAT
Note 2
0
<87> t 250
SU:DAT
<88> t –
R
<89> t –
F
<90> t 4.0
SU:STO
<91> t –
SP
– Cb –
2
C bus can be used in the normal-mode I
2
C bus so that it meets the following conditions.
2
C bus specification).
User's Manual U15109EJ3V0UD
= 4.0 to 5.5 V)
DD
High-Speed Mode
MAX. MIN.
100 0
– 1.3
– 0.6
– 1.3
– 0.6
– 0.6
– –
Note 2
– 0
Note 4
– 100
Note 5
1000 20 + 0.1Cb
Note 5
300 20 + 0.1Cb
– 0.6
– 0
400 –
), only the maximum data hold time
LOW
2
C bus system. In this case, set the
Unit
MAX.
400 kHz
µ s
–
µ s
–
µ s
–
µ s
–
µ s
–
µ s
–
µ s
Note 3
0.9
– ns
300 ns
300 ns
µ s
–
50 ns
400 pF
of SCLn
IHmin.
.
+ t : =
Rmax. SU DAT
709