Features
- 32MHz RXv2 core (5.05 CoreMark/MHz*), DSP/FPU for digital signal processing
- *Typical for RXv2 core
- Operating temperature: -40°C to 85°C or -40°C to 105°C
- Large-capacity memory: 256KB code flash, 32KB SRAM
- 8KB data flash that can store data like an EEPROM
- 6mm square 40-pin (HWQFN) or 7mm square 48-pin (LFQFP) small package lineup
- Up to 20 general-purpose I/O ports
- CAN (ISO 11898-1 compliant, up to 1Mbps transfer)
- Various other communication interfaces (SCI, IIC, RSPI, etc.)
- Analog front-end
- 24-bit delta-sigma (ΔΣ) A/D converters: Up to 23-bit effective resolution, programmable data rate 7.6sps to 15.6ksps
- Dual 24-bit ΔΣ A/D converters (R5F523ExAxxx)
- Single 24-bit ΔΣ A/D converter (R5F523ExSxxx)
- PGA: Rail-to-rail analog input, gain 1 to 128, offset drift 10 nV/°C, gain drift 1 ppm/°C
- Voltage reference: low drift 10ppm/°C with good temperature stability
- Excitation current source: Matched programmable current source
- 24-bit delta-sigma (ΔΣ) A/D converters: Up to 23-bit effective resolution, programmable data rate 7.6sps to 15.6ksps
Description
The RX23E-B Group of microcontrollers has a built-in analog front end (AFE) that is ideal for industrial sensor equipment. Compared to the RX23E-A, the high-speed performance and noise performance of the RX23E-B 24-bit delta-sigma A/D converter have been improved. The maximum data rate is 125kSPS, which is fast for a delta-sigma A/D converter and is eight times faster than the RX23E-A. RMS noise has been reduced to about 1/3 of that of the RX23E-A, making it possible to measure strain, temperature, pressure, flow, current, voltage, etc. at high speed and with accuracy. The RX23E-B also has an integrated 16-bit D/A converter and +/-10V high-voltage analog signal input circuit, reducing the overall bill of materials (BOM) and footprint. The CPU is equipped with an RXv2 core that offers excellent digital signal processing (DSP)/floating-point unit (FPU) operation, which enables high-precision measurement, control, and communication on a single chip.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | RXv2 |
| Program Memory (KB) | 128, 256 |
| RAM (KB) | 16, 32 |
| Carrier Type | Full Carton (Tray), Tape & Reel, Tray |
| Supply Voltage (V) | 1.8 - 5.5 |
| I/O Ports | 14, 15, 18, 27, 28, 44, 59 |
| DRAM I/F | No |
| Temp. Range (°C) | Ta = -40 to +85, Ta = -40 to +105 |
| Operating Freq (Max) (MHz) | 32 |
| Ethernet speed | No |
| Ethernet (ch) | 0 |
| 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) | 2, 3, 4, 5, 6 |
| SPI (ch) | 3, 4, 5, 6, 7 |
| I2C (#) | 3, 4, 5, 6, 7 |
| CAN (ch) | 1 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| SDHI (ch) | 0 |
| High Resolution Output Timer | No |
| PWM Output (pin#) | 16 |
| 32-Bit Timer (ch) | 0 |
| 16-Bit Timer (ch) (#) | 9 |
| 8-Bit Timer (ch) | 4 |
| Standby operable timer | Yes |
| 12-Bit A/D Converter (ch) | 2, 6, 8 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 4, 6, 8 |
| 16-Bit D/A Converter (ch) | 1 |
| 12-Bit D/A Converter (ch) | 0 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 0 |
| Segment LCD Controller | No, Yes |
| Security & Encryption | Unique ID |
Application Block Diagrams
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Pirani Vacuum Gauge
This system uses thermal conductivity to measure vacuum pressure with high accuracy and compact design.
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Displacement Measurement Using LVDT
High-precision LVDT displacement sensor system with robust signal processing for industrial automation.
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Industrial Pressure Control System
The pressure control system utilizes an MCU with integrated AFE, reducing costs, boosting reliability, and ensuring accuracy.
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