Datasheet

RL78/G13 3. ELECTRICAL SPECIFICATIONS (G: T
A = -40 to +105°C)
Page 158 of 194R01DS0131EJ0310 Rev.3.10
Nov 15, 2013
CSI mode connection diagram (during communication at different potential)
V b
R b
SOp
SCK
SI
SIp
SO
V
b
R b
RL78
microcontroller
<Master>
SCKp
User device
Remarks 1. R
b[Ω]:Communication line (SCKp, SOp) pull-up resistance, Cb[F]: Communication line (SCKp, SOp)
load capacitance, V
b[V]: Communication line voltage
2. p: CSI number (p = 00, 01, 10, 20, 30, 31), m: Unit number , n: Channel number (mn = 00, 01, 02, 10,
12, 13), g: PIM and POM number (g = 0, 1, 4, 5, 8, 14)
3. fMCK: Serial array unit operation clock frequency
(Operation clock to be set by the CKSmn bit of serial mode register mn (SMRmn).
m: Unit number, n: Channel number (mn = 00))
4. CSI01 of 48-, 52-, 64-pin products, and CSI11 and CSI21 cannot communicate at different potential.
Use other CSI for communication at different potential.