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Features

  • 48MHz Arm Cortex-M23 Core
  • Up to 64KB flash memory and 16KB SRAM
  • 2KB data flash memory (100,000 program/erase (P/E) cycles)
  • Package options of 32-pin and 48-pin
  • Wide voltage range of 1.6V to 5.5V
  • 16-bit general-purpose timers, 32-bit general-purpose timer, and 16-bit low-power asynchronous general-purpose timers
  • 12-bit A/D converter and temperature sensor
  • SCI (UART, Simple SPI, Simple I2C), SPI, and I2C bus
  • Safety functions

Description

The RA2E3 group is an entry-line, single-chip microcontroller in the RA family based on the 48MHz Arm® Cortex®-M23 core with up to 64KB code flash and 16KB SRAM memory. RA2E3 MCUs provide an optimized feature set for cost-sensitive applications by supporting pin-to-pin and peripheral compatibility with RA2E1 MCUs. Ultra-low power consumption contributes to energy-efficient system design, required for IoT applications and battery-operated systems to achieve longer battery life.

Parameters

AttributesValue
Main CPUArm Cortex-M23
Program Memory (KB)32, 64
RAM (KB)16
Carrier TypeBulk (Tray), Full Carton (Tray), Full Tray (Tray), Tape & Reel
Supply Voltage (V)1.6 - 5.5
I/O Ports26, 40
DRAM I/FNo
Temp. Range (°C)Ta= -40 to +85, Ta= -40 to +105
Operating Freq (Max) (MHz)48
Ethernet speedNo
EtherCat (ch) (#)0
USB FS (host ch/device ch)( 0 / 0 )
USB HS (host ch/device ch)( 0 / 0 )
USB SS (host ch/device ch)( 0 / 0 )
SCI or UART (ch)3, 4
SPI (ch)1
I2C (#)1
CAN (ch)0
CAN-FD (ch)0
WirelessNo
SDHI (ch)0
High Resolution Output TimerNo
PWM Output (pin#)9, 14
32-Bit Timer (ch)1
16-Bit Timer (ch) (#)6
Standby operable timerYes
Asynchronous General Purpose Timer / Interval Timer (ch)2
16-Bit A/D Converter (ch)0
14-Bit A/D Converter (ch)0
12-Bit A/D Converter (ch)10, 13
24-Bit Sigma-Delta A/D Converter (ch)0
12-Bit D/A Converter (ch)0
8-Bit D/A Converter (ch)0
Capacitive Touch Sensing Unit (ch)0
Image CodecNo
Segment LCD ControllerNo
Security & EncryptionUnique ID

Package Options

Pkg. TypePkg. Dimensions (mm)Lead Count (#)Pitch (mm)
HWQFN5 x 5 x 0.8320.5
HWQFN7 x 7 x 0.8480.5
LQFP7 x 7 x 1.7320.8
LQFP7 x 7 x 1.7480.5

Application Block Diagrams

Humanoid battery management system block diagram features cell balancing and monitoring, charge and discharge protection, pack voltage and current sensing, battery pack control, communications, auxiliary power, and active cooling.
Humanoid Battery Management System
Integrated humanoid robot BMS enabling safe, real-time power management, protection, and battery-state control.
Electric Toothbrush with UV Sanitation Block Diagram
Electric Toothbrush with UV Sanitation
An electric toothbrush with UV sanitization and NFC brush authentication.

Additional Applications

  • General Purpose
  • IoT Devices
  • Industrial Automation, Industrial Sensors
  • Consumer Applications
  • Home Appliances
  • Building Automation
  • Medical & Healthcare
  • Wearable Devices

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