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RL78/G1A CHAPTER 29 ELECTRICAL SPECIFICATIONS (T
A = −40 to +85°C)
R01UH0305EJ0200 Rev.2.00 885
Jul 04, 2013
CSI mode connection diagram (during communication at different potential)
V
b
R
b
SCKp
SOp
SCK
SI
User device
SIp SO
V
b
R
b
<Master>
RL78
microcontroller
Remarks 1. Rb[Ω]: Communication line (SCKp, SOp) pull-up resistance, Cb[F]: Communication line (SCKp, SOp) load
capacitance, Vb[V]: Communication line voltage
2. p: CSI number (p = 00, 10, 20), m: Unit number , n: Channel number (mn = 00, 02, 10),
g: PIM and POM number (g = 0, 1)
3. CSI01, CSI11, and CSI21 cannot communicate at different potential. Use other CSI for communication at
different potential.