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Overview

The RX21A group is the product that 24-bit Delta-sigma ADC is built in for measuring instruments such as a smart meter. PGA (Programmable Gain Amp) is built in Delta-sigma ADC, which is possible to amplify analog signal at most 64 times. The RX21A group has peripheral functions with special features, such as RTC which enables Time capture on event-signal input through external pins and DEU (Data Encryption Unit) which enables to use Encryption/decryption functions of the AES standard.

RX21A Block Diagram
Pin-Memory Diagram of RX21A standard products
Pin-Memory Diagram of RX21A High-temperature products
RX21A Block Diagram
Pin-Memory Diagram of RX21A standard products
Pin-Memory Diagram of RX21A High-temperature products

Applications

  • Consumer (battery drive)
  • Healthcare
  • Industrial
  • Home appliances

Documentation

Design & Development

Software & Tools
DSP Library for RX Family
Software library that implements numeric operation function used in DSP with general purpose MCU
Downloads
RX Family RX DSP Library Version 5.0 Rev.1.00 - Sample CodeRX Family RX DSP Library Version 5.0 Rev.1.00
 DSP / FFT Renesas
FAT File System
FAT file system, Original file system
File System Renesas
FAT File System [M3S-TFAT-Tiny] for the RX Family
FAT file system for RX Family
Downloads
RX Family Open Source FAT File System M3S-TFAT-Tiny Module Using Firmware Integration Technology Rev.4.12RX Family M3S-TFAT-Tiny Memory Driver Interface Module Using Firmware Integration Technology Rev.2.50RX Family M3S-TFAT-Tiny Memory Driver Interface Module Using Firmware Integration Technology Rev.2.50 - Sample CodeRX Family Open Source FAT File System M3S-TFAT-Tiny Module Using Firmware Integration Technology Rev.4.12 - Sample Code
 File System Renesas
JPEG Encode and Decode Library
JPEG Library
 Imaging Renesas
RI600PX Real-time OS for RX Family
μITRON4.0/PX Specification real-time OS for RX Family [Required IDE : CS+] * RI600PX is not generally promoted to U.S. and European customers. Customers in U.S. and Europe who are interested in RI600PX are requested to contact our regional marketing departments for details.
ITRON OS Renesas
RI600V4 Real-time OS for RX Family
μITRON4.0 Specification real-time OS for RX Family [Required IDE : e2 studio, CS+] * RI600V4 is not generally promoted to U.S. and European customers. Customers in U.S. and Europe who are interested in RI600V4 are requested to contact our regional marketing departments for details.
ITRON OS Renesas
Data Flash Driver
Block type Device Drivers for data flash embedded microcontrollers
On-chip Flash Memory Renesas
TCP/IP protocol stack [M3S-T4-Tiny] for RX Family
Ultracompact TCP/IP protocol stack (high-speed version) for RX
Protocol Stack Renesas
Sound Playback/Compression System [M3S-S2-Tiny] for RX Family
Sound playback system for RX Family
Sound / Voice Renesas
C/C++ Compiler Package for RX Family [CC-RX]
C/C++ Compiler Package for RX Family [IDE: CS+, e² studio, High-performance Embedded Workshop]
Downloads
RX Family C/C++ Compiler Package (CC-RX) Programming Techniques Rev.1.00[Evaluation Software] RX Compiler CC-RX V.1.02 Release 01 with HEWRX Compiler Application Notes: 2-Compiler Use Guide: #pragma Extension Guide Rev.1.00
 Compiler/Assembler Renesas
High-performance Embedded Workshop
Renesas integrated development environment (IDE) (for SuperH, RX, R8C, M32R, M16C, H8SX, H8S, H8, and 740 families).
Downloads
High-performance Embedded Workshop Application Note: Real-time OS aware debugging Rev.1.00Install Manager Utility V.1.03.01 UpgradeAutoUpdate Utility V.1.05.00 UpgradeHigh-performance Embedded Workshop Tcl/Tk Application Note Rev.1.00
 IDE and Coding Tool Renesas
Flash Development Toolkit (Programming GUI)
Flash memory programming software. [Support MCU/MPU and devices: SuperH RISC engine, RX, R8C, M16C, H8SX, H8S, H8, 740]
Downloads
[Evaluation Software] Flash Development Toolkit V.4.09 Release 03
 Programmer (Unit/SW) Renesas
Simulator Debugger for RX Family [for High-performance Embedded Workshop]
Simulator debugger for RX family [Support IDE : High-performance Embedded Workshop] (Note: This product is included in Compiler Package and is not available separately.)
Downloads
[Evaluation Software] RX Compiler CC-RX V.1.02 Release 01 with HEW
 Simulator Renesas
Crypto Library
Robust encode library to ensure security for all types of system developments
 Security / Crypto Renesas
I2C Serial EEPROM Driver
Device Drivers for I2C Bus Serial EEPROM R1EX24xxx Series, R1EV24xxx Series and HN58X24xxx Series
Downloads
RX Family, RL78 Family Renesas R1EX24xxx Series Serial EEPROM Control Software Rev.1.03 - Sample Code
 Serial Memory Renesas
SPI/QSPI Serial Flash Memory, QSPI Serial Phase Change Memory Driver
Device Driver for SPI and QSPI Serial Flash Memory and QSPI Serial Phase Change Memory
Downloads
RX Family Clock Synchronous Single Master Control Software Using the RSPI Rev.1.11 - Sample CodeRX Family Clock Synchronous Single Master Control Software Using the RSPI Rev.1.11RX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M25P Series Serial Flash memory Control Software Rev.1.06 - Sample CodeRX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M45PE Series Serial Flash memory Control Software Rev.1.06 - Sample CodeRX Family, RL78 Family, 78K0R/Kx3-L Micron Technology P5Q Serial Phase Change Memory Control Software Rev.1.04 - Sample Code
RX Family, RL78 Family, 78K0R/Kx3-L Micron Technology N25Q Serial NOR Flash Memory Control Software Rev.1.04 - Sample CodeRX Family, RL78 Family, 78K0R/Kx3-L Macronix International MX25/66L Family Serial NOR Flash Memory Control Software Rev.1.04 - Sample CodeRX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M25P Series Serial Flash memory Control Software Rev.1.06RX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M45PE Series Serial Flash memory Control Software Rev.1.06RX Family, RL78 Family, 78K0R/Kx3-L Macronix International MX25/66L Family Serial NOR Flash Memory Control Software Rev.1.04
 Serial Memory Renesas
SPI Serial EEPROM Driver
Device Drivers for SPI Bus Serial EEPROM R1EX25xxx Series and HN58X25xxx Series
Downloads
RX Family Clock Synchronous Control Module for EEPROM Access Firmware Integration Technology Rev.3.10RX Family Clock Synchronous Single Master Control Software Using the RSPI Rev.1.11 - Sample CodeRX Family Clock Synchronous Single Master Control Software Using the RSPI Rev.1.11RX Family, RL78 Family, 78K0R/Kx3-L Renesas R1EX25xxx Series Serial EEPROM Control Software Rev.1.06 - Sample CodeRX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M25P Series Serial Flash memory Control Software Rev.1.06 - Sample Code
RX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M45PE Series Serial Flash memory Control Software Rev.1.06 - Sample CodeRX Family, RL78 Family, 78K0R/Kx3-L Renesas R1EX25xxx Series Serial EEPROM Control Software Rev.1.06
 Serial Memory Renesas
E2 emulator [RTE0T00020KCE00000R]
On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX, RISC-V MCU]
Downloads
[Flyer] E2Emulator[RTE0T00020KCE00000R]
 Emulator Renesas
E20 emulator [R0E000200KCT00]
On-chip debugging emulator. Also available as a flash memory programmer. For RX600 or RX700 Series MCU, trace functions and Real-time RAM monitor functions available. For MCUs other than RX600 or RX700, the available debugging function corresponds to that of E2 Emulator Lite. [Support MCU/MPU: RX, RL78, RH850, V850, 78K0R, 78K0, R8C]
Downloads
E1, E20 Self-Checking Program V.1.01.00
 Emulator Renesas
E2 emulator Lite [RTE0T0002LKCE00000R]
On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX, RISC-V MCU]
 Emulator Renesas
PG-FP6
Flash memory programmer [Programming software: Dedicated GUI-based software, the "FP6 Terminal"] [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, SuperH RISC engine, V850, 78K, R8C]
 Programmer (Unit/SW) Renesas
Renesas Flash Programmer (Programming GUI)
Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU Renesas Synergy, DA1453x, DA1459x, DA1469x, DA1470x, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
 Programmer (Unit/SW) Renesas
QE for Current Consumption: A Dedicated Tool for Current Measurement
Development assistance tool helps to shorten the times taken in operations for the tuning of currents drawn. [Standard item in the "e² studio" and CS+ (CS+ for CC only) IDEs] [Support MCU/MPU: RX, RL78]
 Solution Toolkit Renesas
CS+
Renesas integrated development environment (IDE) [Support MCU/MPU: RH850, V850, RX, RL78, 78K0R, 78K0] (Note: CS+ is not generally promoted to U.S. and European customers.) (Note: To use Smart Configurator on CS+ for RL78/G23 and RX family MCUs, install the Smart Configurator for each MCU family separately downloading from ”Design & Support” > ”Development Tools” > ”Smart Configurator”)
 IDE and Coding Tool Renesas
e² studio - Information for the RX Family
Eclipse-based Renesas integrated development environment (IDE).
IDE and Coding Tool Renesas
Renesas IAR Embedded Workbench Device-Support-Packages
Renesas IAR Embedded Workbench Device-Support-Packages include all device-specific files to be used with the Embedded Workbench IDE.
 IDE and Coding Tool Renesas
Add 10 hidden items
26 items

Software Downloads
Type Title Date
Software & Tools - Evaluation Software
[Evaluation Software] Flash Development Toolkit V.4.09 Release 03
Log in to Download ZIP 37.73 MB 日本語
Software & Tools - Other
E1, E20 Self-Checking Program V.1.01.00
Log in to Download ZIP 1.21 MB 日本語
Software & Tools - Evaluation Software
[Evaluation Software] RX Compiler CC-RX V.1.02 Release 01 with HEW
Log in to Download ZIP 122.90 MB 日本語
Software & Tools - Other
Install Manager Utility V.1.03.01 Upgrade
Log in to Download EXE 1.30 MB 日本語
Software & Tools - Other
AutoUpdate Utility V.1.05.00 Upgrade
Log in to Download EXE 7.57 MB 日本語
5 items

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    PLP
    CPU
    Program Memory (KB)
    Data Flash (KB)
    RAM (KB)
    Lead Count (#)
    Pkg. Type
    Supply Voltage (V)
    Operating Freq (Max) (MHz)
    I/O Ports
    Ethernet
    USB
    UART (#)
    SPI (#)
    I2C (#)
    CAN (ch)
    DMA
    Timer
    ADC
    24-Bit Sigma-Delta A/D Converter (ch)
    DAC
    Human Machine Interface
    RTC
    Watchdog Timer (ch)
    LVD or PVD
    Pkg. Dimensions (mm)
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    R5F521A8BDLJ#U0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 8 64 100 TFLGA 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 7 x 7 x 1.05 Tray 3
    R5F521A7BDFM#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 384 8 64 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray 3 7.166
    R5F521A7BDFM#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 384 8 64 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray 3
    R5F521A8BDFP#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 8 64 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3 8.483
    R5F521A8BDFP#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 8 64 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3
    R5F521A8BDFN#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 8 64 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray 3 8.284
    R5F521A7BDFP#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 384 8 64 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3 8.203
    R5F521A7BDFP#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 384 8 64 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3
    R5F521A8BDFM#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 8 64 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray 3 7.442
    R5F521A8BDFM#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 8 64 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray 3
    R5F521A7BDFN#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 384 8 64 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray 3 8.006
    R5F521A6BDFN#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 256 8 32 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray 3 7.366
    R5F521A6BDFN#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 256 8 32 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray 3
    R5F521A6BDFM#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 256 8 32 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray 3
    R5F521A6BDFM#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 256 8 32 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray 3
    R5F521A6BDFP#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 256 8 32 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3 7.424
    R5F521A6BDFP#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 256 8 32 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3
    R5F521A8BGFP#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 8 64 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3
    R5F521A7BGFN#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 384 8 64 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray 3 8.562
    R5F521A6BGFM#30
    circleActive
    memory
    view_in_ar
    		N/A RXv1 256 8 32 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray 3
    R5F521A7BDFM#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 384 8 64 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray (Full Carton) 3
    R5F521A8BDFP#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 512 8 64 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray (Full Carton) 3 8.049
    R5F521A8BDFN#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 512 8 64 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray (Full Carton) 3 7.886
    R5F521A7BDFP#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 384 8 64 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray (Full Carton) 3
    R5F521A8BDFM#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 512 8 64 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray (Full Carton) 3
    R5F521A7BDFN#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 384 8 64 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray (Full Carton) 3 7.619
    R5F521A6BDFN#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 256 8 32 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray (Full Carton) 3
    R5F521A6BDFM#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 256 8 32 64 LFQFP 1.8 - 3.6 50 38 No 5 7 6 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 4-ch 3 No Yes 2 Yes 10 x 10 x 1.7 Tray (Full Carton) 3
    R5F521A6BDFP#10
    circleActive
    memory
    view_in_ar
    		2027 Dec RXv1 256 8 32 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray (Full Carton) 3 7.16
    R5F521A8BGFP#10
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 8 64 100 LFQFP 1.8 - 3.6 50 66 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 7 10-bit x 2-ch Yes 2 Yes 14 x 14 x 1.7 Tray (Full Carton) 3
    R5F521A7BGFN#10
    circleActive
    memory
    view_in_ar
    		N/A RXv1 384 8 64 80 LFQFP 1.8 - 3.6 50 51 No 5 7 7 0 Yes 8-bit x 4-ch, 16-bit x 10-ch 10-bit x 7-ch 4 10-bit x 2-ch Yes 2 Yes 12 x 12 x 1.7 Tray (Full Carton) 3
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product

    Resonator Information

    Please search for your resonator on its manufacturer's site linked below. If you require optimal oscillation circuit constants for your particular system, please ask the manufacturer of the oscillator.
    For Main clock resonator :
    KYOCERA: Click here for RX21A oscillation evaluation result.
    Murata Manufacturing: For IC Manufacturer, select Renesas Electronics, and enter R5F521A into the IC Part Number search box.
    For Sub clock resonator :
    KYOCERA: Click here for RX21A oscillation evaluation result.

    For information on resonators, please also refer to the following application note.
    Design Guide for Main Clock Circuits and Sub-Clock Circuits Rev.1.01 (PDF | English, 日本語)