Datasheet

RL78/L12 CHAPTER 30 ELECTRICAL SPECIFICATIONS (A, G: T
A = -40 to +85°C)
R01UH0330EJ0200 Rev.2.00 889
Dec 13, 2013
CSI mode connection diagram (during communication at different potential)
V b
R b
SCKp
SOp
SCK
SI
User's 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, V
b[V]: Communication line voltage
2. p: CSI number (p = 00, 01), m: Unit number (m = 0), n: Channel number (n = 0, 1), g: PIM and POM
number (g = 1)
3. f
MCK: 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, n: Channel number (mn = 00, 01)
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