Features
- 48MHz Arm Cortex-M23 core
- 512KB flash memory (dual bank) and 48KB SRAM
- 8KB data flash memory (100,000 program/erase (P/E) cycles)
- 64-pin, 80-pin, and 100-pin LFQFP package options
- 24-bit Sigma-Delta A/D converter, 12-bit A/D converter and temperature sensor
- 16-bit general-purpose timers, 32-bit and 16-bit low-power AGT timers, and independent power supply RTC
- SCI (UART, Simple SPI, Simple I2C), SPI and I2C bus
- Segment LCD controller (8com x 38seg)
- Security functions including AES, Secure MPU, Flash Access Window, TRNG
Description
The RA2A2 group is a low-power microcontroller that combines a 48MHz Arm® Cortex®-M23 core and a rich set of peripheral functions. The RA2A2 MCU provides an optimized feature set suitable for a wide range of applications by supporting segment LCD and high-precision analog sensing functionalities while reducing power consumption, system cost, and overall footprint. Furthermore, the RA2A2's dual bank flash and security features make firmware updates easy and increase system reliability.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | Arm Cortex-M23 |
| Program Memory (KB) | 512 |
| RAM (KB) | 48 |
| Carrier Type | Bulk (Tray), Full Carton (Tray), Full Tray (Tray), Tape & Reel |
| Supply Voltage (V) | 1.6 - 5.5 |
| I/O Ports | 43, 59, 71, 77 |
| DRAM I/F | No |
| Temp. Range (°C) | Ta = -40 to +105 |
| Operating Freq (Max) (MHz) | 48 |
| Ethernet speed | No |
| 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) | 4, 5 |
| SPI (ch) | 1 |
| I2C (#) | 1, 2 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| SDHI (ch) | 0 |
| High Resolution Output Timer | No |
| PWM Output (pin#) | 9, 11, 12 |
| 32-Bit Timer (ch) | 0 |
| 16-Bit Timer (ch) (#) | 5, 6 |
| Standby operable timer | Yes |
| Asynchronous General Purpose Timer / Interval Timer (ch) | 10 |
| 16-Bit A/D Converter (ch) | 0 |
| 14-Bit A/D Converter (ch) | 0 |
| 12-Bit A/D Converter (ch) | 2, 4 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 4, 7 |
| 12-Bit D/A Converter (ch) | 0 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 0 |
| Image Codec | No |
| Segment LCD Controller | Yes |
| Security & Encryption | Unique ID, TRNG, AES |
Product Comparison
| RA2A2 | RA2A1 | RA2L1 | RA4M2 | |
| CPU | Arm Cortex-M23 | Arm Cortex-M23 | Arm Cortex-M23 | Arm Cortex-M33 |
| Operating Freq (Max) (MHz) | 48 | 48 | 48 | 100 |
| Program Memory (KB) | 512 | 256 | 128, 256 | 256, 384, 512 |
| RAM (KB) | 48 | 32 | 32 | 128 |
| Data Flash (KB) | 8 | 8 | 8 | 8 |
| Lead Count (#) | 64, 80, 100 | 32, 36, 40, 48, 64 | 48, 64, 80, 100 | 48, 64, 100 |
| Supply Voltage | 1.6 - 5.5 | 1.6 - 5.5 | 1.6 - 5.5 | 2.7 - 3.6 |
Application Block Diagrams
 | Level 2 EV Charger Modular EVSE system with advanced connectivity for efficient EV charging and management. |
 | Magnetic Flow Meter Magnetic flow meters ensure precise flow measurement using electromagnetic induction, ideal for various industries. |
 | Smart Thermostat IoT-enabled smart thermostat offers remote monitoring, and energy efficiency, and supports rapid prototyping tools. |
 | Level 2 EV Charger Wall Box Modular EV charger design with flexible communication, OTA updates, and simplified high-voltage power. |
 | 3-Phase Smart Electric Meter 3-phase smart meter with remote data access and high-voltage operation for heavy loads. |
 | Smart 3-Ph E-Meter Smart 3-phase e-meter with bidirectional communication and tamper detection for modern grids. |
Additional Applications
- Energy meters
- Industrial automation
- Building automation
- Home appliances
- Medical and healthcare
- Digital home appliances/consumer products
An overview of the ultra-low power, feature-rich MCUs ideal for global energy management and a variety of industrial applications. Get all the details on the RA2A2 page.
