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RL78 Datasheet(PDF) 68 Page - Renesas Technology Corp

Part # RL78
Description  RENESAS MCU
PDF  146 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

RL78 Datasheet(HTML) 68 Page - Renesas Technology Corp

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RL78/F15
3. ELECTRICAL SPECIFICATIONS (GRADE L)
R01DS0461EJ0110 Rev.1.10
Page 68 of 143
Jan 30, 2026
CSI mode connection diagram (during communication at different potential)
User's device
RL78
microcontroller
SCKp
SSIp
SCK
SI
Vb
Rb
Vb
Rb
SOp
SIp
SO
<Master>
Caution Select the TTL input buffer for the SIp pin and N-ch open-drain output mode for the SOp pin and
SCKp pin.
Remarks 1. Rb [Ω]: Communication line (SCKp, SOp) pull-up resistance, Cb [F]: Communication line (SOp, SCKp)
load capacitance, Vb [V]: Communication line voltage
2. p: CSIp (p = 00, 01, 10, 11), m: Unit m (m = 0, 1), n: Channel n (n = 0, 1)
3. AC characteristics of the serial array unit during communication at different potential in CSI mode are
measured with the VIH and VIL below:
When 4.0 V
≤ EVDD0 ≤ 5.5 V, 2.7 V ≤ Vb ≤ 4.0 V: VIH = 2.2 V, VIL = 0.8 V



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