Overview
Description
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.
Comparison
Applications
Design & Development
Software & Tools
Sample Code
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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UART Boolloader for RX21A
Hello All I want to update my RX21A firmware through UART so anyone having any doc or any sample code. I am using WiFi module with RX21A through UART and through WI-FI I want to update RX21A firmware. Thanks
Sep 13, 2019 -
RX21A E2 Data Flash writing/reading program
Hi friends, this is the first time that I'm using this forum and I hope to find someone that can help me! I'm using one of the uC of the family RX21A and I'm having some problems when I try to write or read date in the ...
Aug 10, 2013 -
Issue of Float and Double Precision variable in R5F521A6BDFP in RX21A Series on E2Studio V5.4.0.023 using Tool Chain KPIT GNURX-ELF ToolChain v 14.03
Dear All, We are using R5F521A6BDFP in RX21A Series on E2Studio V5.4.0.023 using Tool Chain KPIT GNURX-ELF ToolChain v 14.03, Initially we have used codes with variable Double assuming it will be 8 Byte with Double Precision, But Some how after some time at certain ...
Mar 22, 2018
FAQs
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MCU Functionality Problems at Higher Frequencies
Please check the following items: 1) Make sure that both the operating frequency and operating voltage are set within the allowable range. 2) Depending on the MCU, you must change the access cycles of the operational power control state, code flash, RAM, etc. To change the access cycles, check the ...
Jun 8, 2017 -
RX Family: Can A/D conversion be performed on other analog input?
No. When temperature sensor output or internal reference voltage is selected, please select single-scan mode, remove all analog inputs from conversion target, and perform A/D conversion.
May 20, 2014 -
Factors that Cause Flash Programming Errors (PRGERR)
... RX62T group, RX62G group) • "Command Lock State" in the Flash Memory (Target products: RX630 group, RX63N group, RX631 group, RX63T group, RX634 group, RX210 group, RX21A group, RX220 group) • "Flash Status Register 0 (FSTATR0)" in the Flash Memory (Target products: RX110 group, RX111 group, RX113 group, RX130 group, RX230 group ...
Jun 8, 2017