RL78/F13, F14 CHAPTER 34 ELECTRICAL SPECIFICATIONS (GRADE L)
R01UH0368EJ0210 Rev.2.10 1708
Dec 10, 2015
(7) During communication at same potential (simplified I
2
C mode) (SDAr and SCLr: N-ch open-drain output
(EV
DD0 tolerance) mode)
(TA = -40 to +105C, 2.7 V EVDD0 = EVDD1 = VDD 5.5 V, VSS = EVSS0 = EVSS1 = 0 V)
Parameter Symbol Conditions MIN. MAX. Unit
SCLr clock frequency fSCL 400
Note
kHz
Hold time when SCLr = ”L” tLOW 4.0 V VDD 5.5 V,
C
b = 100 pF, Rb = 1.7 k
1300 ns
2.7 V VDD 4.0 V,
C
b = 100 pF, Rb = 2.7 k
Hold time when SCLr = ”H” tHIGH 4.0 V VDD 5.5 V,
C
b = 100 pF, Rb = 1.7 k
600 ns
2.7 V VDD 4.0 V,
C
b = 100 pF, Rb = 2.7 k
Data setup time (reception) tSU: DAT 4.0 V VDD 5.5 V,
C
b = 100 pF, Rb = 1.7 k
1/f
MCK + 120 ns
2.7 V VDD 4.0 V,
C
b = 100 pF, Rb = 2.7 k
1/f
MCK + 270 ns
Data hold time (transmission) tHD: DAT 4.0 V VDD 5.5 V,
C
b = 100 pF, Rb = 1.7 k
0 300 ns
2.7 V VDD 4.0 V,
C
b = 100 pF, Rb = 2.7 k
Note fCLK fMCK/4 must also be satisfied.
Simplified I
2
C mode connection diagram (during communication at same potential)
Caution Select the normal input buffer and N-ch open-drain output mode for the SDAr pin and SCLr pin.
Remarks 1. Rb [Ω]: Communication line (SDAr, SCLr) pull-up resistance, Cb [F]: Communication line (SDAr, SCLr) load
capacitance, Vb[V]: Communication line voltage
2. r: IICr (r = 00, 01, 10, 11)
3. f
MCK: Serial array unit operation clock frequency
SDAr
SCLr
SDA
SCL
User's device
Vb
Rb
Vb
Rb
RL78
microcontroller
<R>
<R>
<R>
<R>
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