S124 datasheet(2/107 Pages) RENESAS

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R01DS0264EU0140 Rev.1.40

Page 2 of 107

Sep 3, 2024

S124 Datasheet

1. Overview

Overview

The MCU integrates multiple series of software- and pin-compatible Arm®-based 32-bit MCUs that share a common set

of Renesas peripherals to facilitate design scalability and efficient platform-based product development.

Based on the energy-efficient Arm Cortex®-M0+ core, the MCU is particularly well suited for cost-sensitive and low-

power applications with the following features:

 128-KB code flash memory

 16-KB SRAM

 Capacitive Touch Sensing Unit (CTSU)

 14-bit A/D Converter (ADC14)

 12-bit D/A Converter (DAC12)

 Security features.

1.1

Function Outline

Table 1.1

Arm core

Feature

Functional description

Arm Cortex-M0+

 Maximum operating frequency: up to 32 MHz

 Arm Cortex-M0+:

- Revision: r0p1-00rel0

- Armv6-M architecture profile

- Single-cycle integer multiplier.

 SysTick timer

- Driven by SYSTICCLK (LOCO) or ICLK.

Table 1.2

Memory

Feature

Functional description

Code flash memory

Maximum 128 KB code flash memory. See section 37, Flash Memory in Userʼs Manual.

Data flash memory

4 KB data flash memory. See section 37, Flash Memory in Userʼs Manual.

Option-setting memory

The option-setting memory determines the state of the MCU after a reset. See section 6,

Option-Setting Memory in Userʼs Manual.

SRAM

On-chip high-speed SRAM with even parity bit. See section 36, SRAM in Userʼs Manual.

Table 1.3

System (1 of 2)

Feature

Functional description

Operating mode

Two operating modes:

 Single-chip mode

 SCI boot mode.

See section 3, Operating Modes in Userʼs Manual.

Reset

9 types of resets:

 RES pin reset

 Power-on reset

 Independent watchdog timer reset

 Watchdog timer reset

 Voltage monitor 0 reset

 Voltage monitor 1 reset

 Voltage monitor 2 reset

 SRAM parity error reset

 Software reset.

See section 5, Resets in Userʼs Manual.

Low Voltage Detection (LVD)

The Low Voltage Detection (LVD) monitors the voltage level input to the VCC pin and the

detection level can be selected using a software program. See section 7, Low Voltage

Detection (LVD) in Userʼs Manual.

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