R5F121BCAFP datasheet(18/85 Pages) RENESAS

18 / 85 page

RL78/G16

1. OUTLINE

R01DS0431EJ0130

Rev.1.30

Page 18 of 85

May 19, 2025

1.4

Pin Identification

ANI0 to ANI10

: Analog Input

INTP0 to INTP9

: Interrupt Request From Peripherals

P00 to P07

P10 to P17

P20 to P23

: Port 0

: Port 1

: Port 2

P40 to P43

: Port 4

P60, P61

: Port 6

P121, P122, P125

: Port 12

P137

: Port 13

PCLBUZ0

: Programmable Clock Output/Buzzer Output

EXCLK

: External Clock Input (Main System Clock)

EXCLKS

: External Clock Input (Subsystem Clock)

X1, X2

: Crystal Oscillator (Main System Clock)

XT1, XT2

: Crystal Oscillator (Subsystem Clock)

IVCMP0, IVCMP1

: Comparator Input

VCOUT0, VCOUT1

: Comparator Output

IVREF0, IVREF1

: Comparator Reference Input

RESET

¯¯¯¯¯¯

: Reset

RxD0, RxD1, RxD2

: Receive Data

RTC1HZ

: Real-time Clock Correction Clock (1 Hz) Output

SCK00, SCK11, SCK20

: Serial Clock Input/Output

SCL00, SCL11, SCL20, SCLA0

: Serial Clock Output

SDA00, SDA11, SDA20, SDAA0

: Serial Data Input/Output

SI00, SI11, SI20

: Serial Data Input

SO00, SO11, SO20

: Serial Data Output

TI00 to TI07

: Timer Input

TO00 to TO07

: Timer Output

TOOL0

: Data Input/Output for Tool

TOOLRxD, TOOLTxD

: Data Input/Output for External Device

TxD0, TxD1, TxD2

: Transmit Data

TS00 to TS14

: Electrostatic Capacitance Measurement Pin (Touch Pin)

TSCAP

: LPF (low-pass filter) Connection for CTSU

VDD

: Power Supply

VSS

: Ground

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