F24 datasheet(3/210 Pages) RENESAS

3 / 210 page

RL78/F23, F24

1. OVERVIEW

R01DS0446EJ0120 Rev.1.20

Page 3 of 207

Dec 31, 2025

1.3 Function Overview

1.3.1 RL78/F24 Functions List

Table 1-4. RL78/F24 Functions List (1/2)

Function Items

Series Name

R7F124FPJ

R7F124FMJ

R7F124FLJ

R7F124FGJ

R7F124FBJ

Pin Count

100 pins

80 pins

64 pins

48 pins

32 pins

Code flash

256 KB

Data flash

16 KB

RAM

24 KB

Supply voltage range

2.7 V to 5.5 V

Maximum operation frequency

40 MHz

System clock

Main system

clock oscillator

Crystal / ceramic /

square wave

2 to 20 MHz (operating at 2.7 V to 5.5 V)

High-speed

on-chip oscillator

Normal high accuracy

40 MHz (typ.)

Low-speed

on-chip oscillator

For low-speed operation

15 kHz (typ.)

Subsystem clock oscillator

32.768 kHz Note 6

None

PLL

Yes

Clock for

peripherals

Low-speed

on-chip oscillator

For peripherals other than

WDT

15 kHz (typ.)

For WDT

15 kHz (typ.)

POR

When power supply is rising

1.56 V (typ.)

When power supply is falling

1.55 V (typ.)

LVD

VDD voltage

detection

When power supply is rising

2.81 V (typ.) to 4.74 V (typ.) (in 6 steps)

When power supply is falling

2.75 V (typ.) to 4.64 V (typ.) (in 6 steps)

Functional safety

Note 7

WWDT (window watchdog timer)

Yes

Flash memory fast CRC operation function

Yes

General purpose CRC operation

Yes

Flash memory ECC function

Yes

RAM 1-bit error correction function

Yes

RAM 2-bit error detection function

Yes

RS-CANFD lite RAM 1-bit error correction

function

Yes

RS-CANFD lite RAM 2-bit error detection

function

Yes

Invalid memory access detection function

Yes

Frequency detection function

Yes

Clock monitor function

Yes

Stack pointer monitor function

Yes

A/D test function

Yes

I/O ports

Input/Output

CMOS

86 ch

68 ch

52 ch

38 ch

25 ch

Output

CMOS

1 ch

None

Input

Shared with oscillator pins

4 ch Note 6

2 ch

Input only

1ch

Power supply

pins

For internal circuits

VDD, VSS, REGC

For I/O ports

EVDD0, EVSS0

EVDD1, EVSS1

EVDD0, EVSS0

None

For analog circuits (AD, DA, COMP)

VDD, VSS (AVREFP, AVREFM for AD)

Multiply/divide

and multiply-

accumulate

functions

Multiply

16 bits

× 16 bits (signed)

16 bits

× 16 bits (unsigned)

Divide

32 bits

÷ 32 bits (unsigned)

Multiply-accumulate

16 bits

× 16 bits + 32 bits (signed)

16 bits

× 16 bits + 32 bits (unsigned)

Arithmetic instructions (extended instruction set)

Yes

Vectored

interrupt sources

External

16 ch Notes 4, 5

15 ch Notes 3, 5

14 ch Note 2

10 ch Note 1

Internal

53 ch Note 4

53 ch Note 3

53 ch Note 2

53 ch Note 1

Key return detection

8 ch

6 ch

DTC

44 sources

43 sources

Timer

TAU

16 bits (8 ch

× 2)

RTC

1 ch

Timer RJ

16 bits

× 1

Timer RDe

16 bits

× 2 (with PWMOPA and dithering / gate function)

(Notes are listed on the next page.)

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