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Overview

The RX621 microcontrollers have 100MHz high-speed operation and enhanced communications functions. They have built-in CAN and two circuits of USB 2.0 host controller. A multi-function timer (MTU2, 2 units), 10-bit or 12-bit A/D converter, DMA controller, and other peripheral functions are incorporated on a single chip. Up to 512KB of Flash memory and 96KB of RAM are built in, as well as 32KB of Flash memory for data storage. Packages are available from 85 pins to 176 pins.

RX621 Block Diagram
Pin-Memory Diagram of RX621 standard products
RX621 Block Diagram
Pin-Memory Diagram of RX621 standard products

Applications

  • Industrial
  • Office Automation
  • Consumer

Documentation

Design & Development

Software & Tools
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
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
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
FAT File System
FAT file system, Original file system
File System 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
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
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
TCP/IP protocol stack [M3S-T4-Tiny] for RX Family
Ultracompact TCP/IP protocol stack (high-speed version) for RX
Protocol Stack 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
 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, RL78 Family, 78K0R/Kx3-L Macronix International MX25/66L Family Serial NOR Flash Memory Control Software Rev.1.04 - Sample Code
 Serial Memory Renesas
Renesas Peripheral Driver Library
Unified API library for controlling peripheral I/O modules on Renesas MCUs. For OS-less development. Target devices : RX220, RX610, RX62G, RX62N, RX621, RX62T, RX630, RX63T etc. (This software is bundled with the Renesas Starter Kits and Peripheral Driver Generator for the above devices.)
Software Package Renesas
Sound Playback/Compression System [M3S-S2-Tiny] for RX Family
Sound playback system for RX Family
Sound / Voice Renesas
USB Drivers
Device drivers for USB communication using USB interface with built-in microcomputer and USB ASSP
Downloads
RX Family Internal Flash ROM rewrite program via USB Mass Storage Rev.1.05 - Sample CodeRX Family Internal Flash ROM rewrite program via USB CDC Rev.1.06 - Sample CodeRX Family Internal Flash ROM rewrite program via USB CDC Rev.1.06RX Family Internal Flash ROM rewrite program via USB Mass Storage Rev.1.05
 USB Renesas
Peripheral Driver Generator
A tool for automatically generating drivers for the built-in peripheral I/Os of a microcomputer (for RX210, RX220, RX63x, and RX62x)
Downloads
Peripheral Driver Generator V.2.09 (for the RX Family)
 Code Generator 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
Debugging MCU Boards
The debugging MCU board is a board to enable the in-circuit connection of an emulator with the user's system and allows you to use more enhanced debugging functions. The applicable debugging functions vary depending on the MCU type.
 Other Emulators and Options 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 03SH2A and RX Families Signal Processing Library Application Note Rev.1.00
 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
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
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
QE for USB: A Dedicated Tool for USB [Technical Preview Edition]
Debugging assistance tool for developing systems which use the USB [Plugin for Renesas IDE "e² studio"] [Support MCU/MPU: RX, RL78]
Downloads
[technical preview version] QE for USB V1.2.1
 Solution Toolkit 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
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Software Downloads
Renesas Starter Kit+ for RX62N

RX62N-Starter-Kit-Plus

Starter
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Renesas Starter Kit+ for RX62N

The Renesas Starter Kit+ for RX62N is intended as a user-friendly introductory and evaluation tool for the RX62N microcontroller. The board also provides a useful...

RA6T1 Starter Kit Contents

RTK0EMA170S00020BJ

Starter
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Motor Control Evaluation System for RA Family - RA6T1 Group

The Motor Control Evaluation System for RA Family - RA6T1 Group is a low-voltage permanent magnet synchronous motor (brushless DC motor) solution that allows anyone to...

Featured Documents:
Motor Control Evaluation System for RA Family - RA6T1 Group Quick Start Guide
Motor Control Evaluation System for RA Family - RA6T1 Group User's Manual

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
    R5F56217BDBG#U0
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    		N/A RXv1 384 32 64 176 LFBGA 2.7 - 3.6 100 128 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 2 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 13 x 13 x 1.4 Tray 3
    R5F56217BDFB#V0
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    memory
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    		N/A RXv1 384 32 64 144 LFQFP 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 20 x 20 x 1.7 Tray 3
    R5F56218BDBG#U0
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    memory
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    Buy Now
    		N/A RXv1 512 32 96 176 LFBGA 2.7 - 3.6 100 128 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 2 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 13 x 13 x 1.4 Tray 3
    R5F56216BDBG#U0
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    memory
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    		N/A RXv1 256 32 64 176 LFBGA 2.7 - 3.6 100 128 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 2 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 13 x 13 x 1.4 Tray 3
    R5F56216BDFB#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 256 32 64 144 LFQFP 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 20 x 20 x 1.7 Tray 3 8.792
    R5F56216BDFP#V0
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    memory
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    		N/A RXv1 256 32 64 100 LFQFP 2.7 - 3.6 100 74 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 1 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 1-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3 8.146
    R5F56216BDLD#U0
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    memory
    view_in_ar
    		2026 Mar RXv1 256 32 64 85 TFLGA 2.7 - 3.6 100 60 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 7 x 7 x 1.2 Tray 3 9.169
    R5F56216BDLE#U0
    circleActive
    memory
    view_in_ar
    		2026 Mar RXv1 256 32 64 145 TFLGA 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 9 x 9 x 1.2 Tray 3 8.222
    R5F56217BDLE#U0
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    memory
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    		2026 Mar RXv1 384 32 64 145 TFLGA 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 9 x 9 x 1.2 Tray 3
    R5F56217BDFP#V0
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    Buy Now
    		N/A RXv1 384 32 64 100 LFQFP 2.7 - 3.6 100 74 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 1 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 1-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3
    R5F56217BDLD#U0
    circleActive
    memory
    view_in_ar
    		2026 Mar RXv1 384 32 64 85 TFLGA 2.7 - 3.6 100 60 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 7 x 7 x 1.2 Tray 3 8.051
    R5F56218BDFP#V0
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    memory
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    		N/A RXv1 512 32 96 100 LFQFP 2.7 - 3.6 100 74 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 1 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 1-ch Yes 2 Yes 14 x 14 x 1.7 Tray 3 9.604
    R5F56218BDFB#V0
    circleActive
    memory
    view_in_ar
    		N/A RXv1 512 32 96 144 LFQFP 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 20 x 20 x 1.7 Tray 3 10.26
    R5F56218BDLD#U0
    circleActive
    memory
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    		2026 Mar RXv1 512 32 96 85 TFLGA 2.7 - 3.6 100 60 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 7 x 7 x 1.2 Tray 3
    R5F56218BDLE#U0
    circleActive
    memory
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    		2026 Mar RXv1 512 32 96 145 TFLGA 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 9 x 9 x 1.2 Tray 3 9.629
    R5F56217BDBG#00
    circleActive
    memory
    view_in_ar
    		2026 Mar RXv1 384 32 64 176 LFBGA 2.7 - 3.6 100 128 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 2 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 13 x 13 x 1.4 Tray (Full Carton) 3
    R5F56217BDFB#10
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    memory
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    		2031 Mar RXv1 384 32 64 144 LFQFP 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 20 x 20 x 1.7 Tray (Full Carton) 3 8.906
    R5F56218BDBG#00
    circleActive
    memory
    view_in_ar
    		2026 Mar RXv1 512 32 96 176 LFBGA 2.7 - 3.6 100 128 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 2 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 13 x 13 x 1.4 Tray (Full Carton) 3
    R5F56216BDBG#00
    circleActive
    memory
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    		2026 Mar RXv1 256 32 64 176 LFBGA 2.7 - 3.6 100 128 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 2 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 13 x 13 x 1.4 Tray (Full Carton) 3
    R5F56216BDFB#10
    circleActive
    memory
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    		2031 Mar RXv1 256 32 64 144 LFQFP 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 20 x 20 x 1.7 Tray (Full Carton) 3 8.458
    R5F56218BDFB#10
    circleActive
    memory
    view_in_ar
    		2031 Mar RXv1 512 32 96 144 LFQFP 2.7 - 3.6 100 105 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 2 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 2-ch Yes 2 Yes 20 x 20 x 1.7 Tray (Full Carton) 3 9.882
    R5F56216BDFP#H0
    circleActive
    memory
    view_in_ar
    		2031 Mar RXv1 256 32 64 100 LFQFP 2.7 - 3.6 100 74 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 1 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 1-ch Yes 2 Yes 14 x 14 x 1.7 Tray (Full Carton) 3 7.726
    R5F56217BDFP#H0
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    memory
    view_in_ar
    		2031 Mar RXv1 384 32 64 100 LFQFP 2.7 - 3.6 100 74 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 1 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 1-ch Yes 2 Yes 14 x 14 x 1.7 Tray (Full Carton) 3 8.17
    R5F56218BDFP#H0
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    memory
    view_in_ar
    		2031 Mar RXv1 512 32 96 100 LFQFP 2.7 - 3.6 100 74 No USB Endpoints x 10, USB Host, USB Isochronous Transfer Support, USB Peripheral, USB Ports (ch) x 1 6 2 1 1 Yes 8-bit x 4-ch, 16-bit x 16-ch 10-bit x 8-ch, 12-bit x 8-ch 0 10-bit x 1-ch Yes 2 Yes 14 x 14 x 1.7 Tray (Full Carton) 3 9.123
    Parametric Table tips

    Tips for Using This Parametric Table:

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    • 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 resonators :　
    KYOCERA:Click here for RX621 oscillation evaluation result.
    Murata Manufacturing: For IC Manufacturer, select Renesas Electronics, and enter R5F562N or R5F5621 into the IC Part Number search box.
    For subclock resonators :
    KYOCERA:Click here for RX621 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)