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RL78/G1A CHAPTER 29 ELECTRICAL SPECIFICATIONS (T
A = −40 to +85°C)
R01UH0305EJ0200 Rev.2.00 894
Jul 04, 2013
(2) I
2
C fast mode, fast mode plus
(TA = −40 to +85°C, 1.6 V ≤ EVDD0 ≤ VDD ≤ 3.6 V, VSS = EVSS0 = 0 V)
Fast Mode
Note 7
Fast Mode
Plus
Note 8
HS
Note 2
LS
Note 3
LV
Note 4
HS
Note 2
Parameter Symbol Conditions
MIN. MAX. MIN. MIN. MAX. MIN. MAX. MIN.
Unit
2.7 V ≤ EVDD0 ≤ 3.6 V 0 400 0 400 0 400 0 1000SCLA0 clock frequency fSCL
1.8 V ≤ EV
DD0 ≤ 3.6 V 0 400 0 400 0 400
−
kHz
2.7 V ≤ EVDD0 ≤ 3.6 V 0.6 0.6 0.6 0.26
Setup time of restart
condition
t
SU:STA
1.8 V ≤ EV
DD0 ≤ 3.6 V 0.6 0.6 0.6
−
μ
s
2.7 V ≤ EVDD0 ≤ 3.6 V 0.6 0.6 0.6 0.26 Hold time
Note 5
tHD:STA
1.8 V ≤ EV
DD0 ≤ 3.6 V 0.6 0.6 0.6
−
μ
s
2.7 V ≤ EVDD0 ≤ 3.6 V 1.3 1.3 1.3 0.5
Hold time when SCLA0
= “L”
t
LOW
1.8 V ≤ EV
DD0 ≤ 3.6 V 1.3 1.3 1.3
−
μ
s
2.7 V ≤ EVDD0 ≤ 3.6 V 0.6 0.6 0.6 0.26
Hold time when SCLA0
= “H”
t
HIGH
1.8 V ≤ EV
DD0 ≤ 3.6 V 0.6 0.6 0.6
−
μ
s
2.7 V ≤ EVDD0 ≤ 3.6 V 100 100 100 50
Data setup time
(reception)
t
SU:DAT
1.8 V ≤ EV
DD0 ≤ 3.6 V 100 100 100
−
ns
2.7 V ≤ EVDD0 ≤ 3.6 V 0 0.9 0 0.9 0 0.9 0 450
Data hold time
(transmission)
Note 6
t
HD:DAT
1.8 V ≤ EV
DD0 ≤ 3.6 V 0 0.9 0 0.9 0 0.9
−
μ
s
2.7 V ≤ EVDD0 ≤ 3.6 V 0.6 0.6 0.6 0.26
Setup time of stop
condition
t
SU:STO
1.8 V ≤ EV
DD0 ≤ 3.6 V 0.6 0.6 0.6
−
μ
s
2.7 V ≤ EVDD0 ≤ 3.6 V 1.3 1.3 1.3 0.5 Bus-free time tBUF
1.8 V ≤ EV
DD0 ≤ 3.6 V 1.3 1.3 1.3
−
μ
s
Notes 1. In normal mode, use it with fCLK ≥ 1 MHz, 1.6 V ≤ EVDD ≤ 3.6 V.
2. HS is condition of HS (high-speed main) mode.
3. LS is condition of LS (low-speed main) mode.
4. LV is condition of LV (low-voltage main) mode.
5. The first clock pulse is generated after this period when the start/restart condition is detected.
6. The maximum value (MAX.) of t
HD:DAT is during normal transfer and a wait state is inserted in the ACK
(acknowledge) timing.
7. In fast mode, use it with f
CLK ≥ 3.5 MHz, 1.8 V ≤ EVDD ≤ 3.6 V.
8. In fast mode plus, use it with f
CLK ≥ 10 MHz, 2.7 V ≤ EVDD ≤ 3.6 V.
Remark The maximum value of C
b (communication line capacitance) and the value of Rb (communication line pull-up
resistor) at that time in each mode are as follows.
Standard mode: C
b = 400 pF, Rb = 2.7 kΩ
Fast mode: Cb = 320 pF, Rb = 1.1 kΩ
Fast mode plus: C
b = 120 pF, Rb = 1.1 kΩ