Renesas R5F100GKANA#U0

Overview

R5F100GKANA#U0 from Renesas is a 48-pin HWQFN-packaged RL78/G13 16-bit microcontroller with 256 KB flash, 8 KB data flash, 20 KB RAM, 32 MHz max CPU speed, and industrial-grade -40°C to +105°C operation. It integrates 16-bit timers (12 channels), 10-bit ADC (16 channels), UART/SPI/I²C interfaces, RTC, and ultra-low-power modes (0.57 μA in STOP with RTC+LVD) for embedded control in HVAC, motor drives, and smart sensors.

For engineers reviewing the R5F100GKANA#U0 datasheet, R5F100GKANA#U0 pinout, R5F100GKANA#U0 application, or R5F100GKANA#U0 equivalent, key selection criteria include its 48-pin HWQFN-0.5mm package, 256 KB code flash with self-programming, 10-bit ADC with internal reference, real-time clock with calendar/alarm, and support for SNOOZE mode for low-latency peripheral wake-up without full CPU restart.

Technical Context

The R5F100GKANA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs at 32 MHz to 30.5 μs at 32.768 kHz). It supports background data flash rewriting via BGO and includes a dedicated low-speed on-chip oscillator for watchdog timer operation independent of main clock domains.

Its power management features include HALT, STOP, and SNOOZE modes with programmable voltage detector (14-level LVD), on-chip POR, and true low-power operation down to 66 μA/MHz active current. The device uses a single 1.6–5.5 V supply and supports different-potential I/O (1.8/2.5/3.0 V interface capability).

Key Specifications

Pinout & Package

Package: 48-pin HWQFN (7 × 7 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F100GKANA#U0, R5F101GKANA#U0 removes data flash but retains all other functionality-ideal for cost-sensitive control-only roles-while R5F100GKAFB#V0 offers identical feature set in a through-hole-compatible LQFP package, easing transition from evaluation to production where thermal performance is less critical than manufacturability.

Availability

R5F100GKANA#U0 is available at Aetrix Electronics and suitable for smart thermostats, industrial motor controllers, and IoT edge sensor nodes requiring stable component supply, long-term lifecycle assurance, and industrial temperature grade (-40°C to +105°C).

Supply support for R5F100GKANA#U0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise markets.

The RL78/G13 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and thermally constrained embedded applications requiring rich analog integration and deterministic real-time control.

FAQ

What is the maximum operating frequency and clock source flexibility of the R5F100GKANA#U0?

The R5F100GKANA#U0 supports up to 32 MHz operation using its high-accuracy on-chip oscillator (±1.0% over 1.8–5.5 V and –20 to +85°C). It also accepts external crystals (e.g., 32.768 kHz for RTC) or resonators, and allows dynamic switching between high-speed and ultra-low-speed clock domains-including 32.768 kHz subsystem clock for RTC and LVD operation during STOP mode. This flexibility enables precise timing control across power states in the R5F100GKANA#U0.

Does the R5F100GKANA#U0 include an integrated temperature sensor, and how is it calibrated?

Yes, the R5F100GKANA#U0 includes an on-chip temperature sensor usable only in HS (high-speed main) mode, with typical accuracy of ±2°C across the –40°C to +105°C range. It shares the ADC input channel ANI16 and uses the internal 1.45 V reference for conversion. Calibration data is factory-trimmed and stored in ROM; users access it via the Flash Self-Programming Library or direct ADC reads. This eliminates external sensing components in the R5F100GKANA#U0-based designs.

How does the SNOOZE mode in the R5F100GKANA#U0 differ from HALT or STOP modes, and when should it be used?

SNOOZE mode allows selected peripherals (UART, CSI, I²C) to remain active and generate interrupts while the CPU core is halted-unlike HALT (peripherals clocked but CPU stopped) or STOP (nearly all clocks gated, lowest power). It is ideal for applications requiring rapid response to serial events (e.g., Modbus command receipt or BLE connection request) without full CPU restart latency. Use SNOOZE in the R5F100GKANA#U0 when deterministic wake-up from low-power sleep is critical and peripheral activity must continue autonomously.

What packaging and thermal characteristics define the R5F100GKANA#U0?

The R5F100GKANA#U0 is supplied in a 48-pin HWQFN package (7 × 7 mm, 0.5 mm pitch) with an exposed thermal pad for enhanced heat dissipation. Its θ_JA is 40°C/W (typical, JEDEC standard board), supporting continuous operation at full 32 MHz under industrial ambient conditions (–40°C to +105°C). The package is RoHS-compliant and rated MSL-3, requiring bake before reflow if exposed beyond floor life. This thermal profile is integral to the R5F100GKANA#U0's suitability for enclosed industrial enclosures.

Can the R5F100GKANA#U0 perform simultaneous code execution and data flash rewriting?

Yes-the R5F100GKANA#U0 supports Background Operation (BGO) for data flash, enabling full program execution from code flash memory while rewriting data flash sectors. This is implemented via dedicated hardware control and interrupt-driven completion signaling. Applications such as firmware parameter logging, calibration storage, or OTA update staging rely on this capability. BGO is fully supported in the R5F100GKANA#U0 and requires no CPU suspension or special wait states during writes.