R5F21182NP#U0
R5F21182NP#U0 - 16-Bit 20MHz MCU | Renesas Electronics
Renesas Electronics R5F21182NP#U0 is a 16-bit R8C microcontroller with an operating frequency of up to 20 MHz, 8 KB (8K x 8) flash program memory, and a 28-HWQFN surface-mount package measuring 5 mm by 5 mm. The device is specified for 3 V to 5 V operation, includes 13 I/O pins, and is supplied in tube packaging according to the verified distributor data.
A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, data memory, peripherals, and I/O into one package. The R5F21182NP#U0 belongs to the R8C/1x family of 16-bit single-chip microcomputers. This product hierarchy connects R8C CPU core devices to embedded control solutions in which compact size, deterministic control, and embedded code execution are more important than a high-pin-count host processor architecture.
The primary verified features include a 16-bit R8C CPU core, 20 MHz maximum speed, 8 KB flash memory, 512 bytes of RAM, 13 I/O pins, an internal oscillator, and a 28-HWQFN package. The Mouser listing describes the device as a 3 V/5 V, Pb-free microcontroller, while the Renesas product page identifies it as an R8C/1x member in the Non Promotion category. These details position the part for compact embedded-control designs requiring moderate code capacity and modest external-interface requirements.
The R8C architecture supports embedded applications where firmware-driven sequencing, control, and communication tasks must be handled by a dedicated device. Its 20 MHz operating speed provides greater timing headroom than slower general-purpose 8-bit alternatives, while 8 KB of flash gives firmware designers room for a bootloader, calibration logic, state machines, and application-specific routines. The 512-byte RAM requirement should be evaluated carefully against the working data and stack needs of the final application.
Typical uses include compact industrial controllers, sensor-interface modules, appliance-control boards, small motor-control subsystems, and low-cost embedded instruments. The 5 mm by 5 mm exposed-pad package can support compact board layouts, but thermal performance and exposed-pad soldering become important when the operating frequency, I/O activity, and ambient temperature combine to create sustained self-heating.
Designers should verify the complete pin assignment, power architecture, peripheral mix, clock options, and programming procedure in the Renesas R5F21182NP datasheet before layout release. The verified snippets do not expose the detailed pin map, operating-temperature range, or recommended PCB land pattern, so those items require confirmation rather than inference.
This product page consolidates verified distributor specifications, current purchasing information, same-family replacement candidates, and practical selection guidance into one engineering-oriented reference. It also distinguishes confirmed values from data that remains to be checked in the manufacturer documentation.
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