Datasheet
V850ES/JG3-H, V850ES/JH3-H CHAPTER 33 ELECTRICAL SPECIFICATIONS
R01UH0042EJ0500 Rev.5.00 Page 1437 of 1513
Aug 12, 2011
(6) I
2
C bus mode
(T
A = −40 to +85°C, VDD = EVDD = UVDD = AVREF0 = AVREF1, VSS = AVSS = 0 V)
Normal Mode High-Speed Mode Parameter Symbol
MIN. MAX. MIN. MAX.
Unit
SCL0n clock frequency fCLK 0 100 0 400 kHz
Bus free time
(Between start and stop conditions)
tBUF <69> 4.7
−
1.3
−
μ
s
Hold time
Note 1
tHD:STA <70> 4.0
−
0.6
−
μ
s
SCL0n clock low-level width tLOW <71> 4.7
−
1.3
−
μ
s
SCL0n clock high-level width tHIGH <72> 4.0
−
0.6
−
μ
s
Setup time for start/restart conditions tSU:STA <73> 4.7
−
0.6
−
μ
s
CBUS compatible master 5.0
− − −
μ
s Data hold
time
I
2
C mode
t
HD:DAT <74>
0
Note 2
−
0
Note 2
0.9
Note 3
μ
s
Data setup time tSU:DAT <75> 250
−
100
Note 4
−
ns
SDA0n and SCL0n signal rise time tR <76>
−
1000 20 + 0.1Cb
Note 5
300 ns
SDA0n and SCL0n signal fall time tF <77>
−
300 20 + 0.1Cb
Note 5
300 ns
Stop condition setup time tSU:STO <78> 4.0
−
0.6
−
μ
s
Pulse width of spike suppressed by
input filter
tSP <79>
− −
0 50 ns
Capacitive load of each bus line Cb
−
400
−
400 pF
Notes 1. When the start condition is satisfied, the first clock pulse is generated after the hold time.
2. The system requires a minimum of 300 ns hold time internally for the SDA0n signal (at V
IHmin. of the SCL0n
signal) in order to occupy the undefined area at the falling edge of SCL0n.
3. If the system does not extend the SCL0n signal low hold time (t
LOW), only the maximum data hold time (tHD:DAT)
needs to be satisfied.
4. The high-speed mode I
2
C bus can be used in a 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 SCL0n signal low hold time:
t
SU:DAT ≥ 250 ns
• If the system extends the SCL0n signal low hold time:
Output the next data bit to the SDA0n line before the SCL0n line is released (t
Rmax. + tSU:DAT = 1,000 + 250 =
1,250 ns: Normal mode I
2
C bus specification).
5. Cb: Total capacitance of one bus line (unit: pF)
Remark n = 0 to 2