Renesas Electronics RL78/G21 16-Bit General-Purpose MCU

Renesas Electronics RL78/G21 16-Bit General-Purpose Microcontroller (MCU) is a cost-optimized, low-power MCU primarily designed for system control applications, with enhanced security features. The RL78/G21 achieves low current consumption during RUN operation while offering a competitive cost among Renesas MCUs in the 128KB and 256KB classes. The RL78/G21 addresses evolving requirements in home appliance applications, especially in the growing smart home segment, for system control and HMI functionalities.

Features

Optimized 128KB/256KB Flash MCU for general-purpose applications
±1.0% HOCO and 4KB data Flash with background operation
Low power consumption (34.4uA/MHz RUN current, 0.23uA Stop current)
Built-in security features for software asset protection
Pin-to-pin and functional compatibility with RL78/G13 and G23
Wide-pitch package lineup (0.65mm/0.8mm)
Additional UARTA channel for enhanced connectivity
Smart configurator and Fast Prototyping Board (FPB) support

Reduce total system cost through a cost-effective MCU, ±1.0% HOCO, and 4KB data Flash with BGO
Enable low-power and energy-efficient system designs
Protect software assets and help prevent counterfeiting
Support increasing connectivity requirements with an additional UART channel
Simplify migration from RL78/G13 and G23 through pin-to-pin and functional compatibility
Accelerate development and shorten time-to-market with Smart configurator and Fast Prototyping Board support