R5F21364CDFA#V0

Product Overview

The R5F21364CDFA#V0 is a Renesas Electronics Corporation microcontroller from the R8C/3x/36C series. It uses a 16-bit R8C core with a 20MHz speed and an internal oscillator, and it provides 16KB (16K x 8) of FLASH program memory together with 1.5K x 8 of RAM. The device uses a 64-LQFP (14x14) surface-mount package and offers 59 I/O pins. Its connectivity set includes I2C, LINbus, SIO, SSU, and UART/USART interfaces, while integrated peripherals include POR, PWM, voltage detection, and WDT functions. The operating supply voltage range is 1.8V ~ 5.5V, and the specified operating temperature range is -40°C ~ 85°C (TA).

Key Features

• 16-bit R8C core with 20MHz speed and internal oscillator
• 16KB (16K x 8) FLASH program memory and 1.5K x 8 RAM
• 59 I/O pins in a 64-LQFP (14x14) surface-mount package
• I2C, LINbus, SIO, SSU, and UART/USART connectivity
• POR, PWM, voltage detection, and WDT peripherals
• A/D 12x10b and D/A 2x8b data converter resources
• 1.8V ~ 5.5V supply range and -40°C ~ 85°C (TA) operating range

Applications

• General-purpose embedded control subsystems requiring program storage and multiple digital I/O connections
• Serial communication nodes using I2C, LINbus, SIO, SSU, or UART/USART interfaces
• Analog measurement and output conditioning paths using the integrated A/D and D/A converter resources
• Timing, PWM signal generation, and voltage-detection tasks in compact surface-mount designs
• User-interface and sensor/actuator interface modules that benefit from 59 I/O pins

Design & Procurement Notes

Design considerations should start with the memory map: the firmware must fit within 16KB (16K x 8) of FLASH program memory and the working data must fit within 1.5K x 8 of RAM. The 64-LQFP (14x14) surface-mount package and 59 I/O pins affect PCB footprint, pin mapping, and routing density. The 1.8V ~ 5.5V supply range and -40°C ~ 85°C (TA) operating range define the power and thermal envelope for the board. Communication requirements should be checked against the I2C, LINbus, SIO, SSU, and UART/USART options. Analog signal chains should be evaluated against the A/D 12x10b and D/A 2x8b resources, and timing-sensitive functions should be reviewed against the 20MHz internal oscillator. POR, PWM, voltage detection, and WDT peripherals can be assigned to reset sequencing, control signal generation, supply monitoring, and watchdog operation. For procurement, confirm the exact manufacturer part number R5F21364CDFA#V0 and the 64-LQFP (14x14) package designation when matching mechanical requirements.