RL78G12_15 Datasheet, PDF (37/110 Pages) Renesas Technology Corp – RENESAS MCU

RL78/G12
2. ELECTRICAL SPECIFICATIONS (A, D: TA = −40 to +85°C)
Simplified I²C mode connection diagram (during communication at same potential)
SDAr
RL78
microcontroller
VDD
Rb
SDA
User's device
SCLr
SCL
SCLr
Simplified I²C mode serial transfer timing (during communication at same potential)
tLOW
1/fSCL
tHIGH
SDAr
tHD:DAT
tSU:DAT
Remarks 1.
2.
3.
4.
Rb [Ω]:Communication line (SDAr) pull-up resistance
Cb [F]: Communication line (SCLr, SDAr) load capacitance
r: IIC number (r = 00, 01, 11, 20), h: = POM number (h = 0, 1, 4, 5)
fMCK: Serial array unit operation clock frequency
(Operation clock to be set by the serial clock select register m (SPSm) and the CKSmn bit of serial
mode register mn (SMRmn). m: Unit number (m = 0, 1), n: Channel number (0, 1, 3))
Simplified I²C mode is supported only by the R5F102 products.
R01DS0193EJ0200 Rev.2.00
Sep 06, 2013
Page 37 of 106