Renesas R5F11BCEALA#U0

Overview

R5F11BCEALA#U0 from Renesas Electronics is a 36-pin WFLGA-packaged RL78/G1F 16-bit microcontroller with 64 KB flash, 5.5 KB RAM, and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD). It integrates 15-channel 8/10-bit ADC, dual 8-bit DAC, two comparators, PGA, UART/LIN, I²C, CSI, IrDA, and real-time clock - targeting battery-powered industrial sensors and smart metering.

For engineers reviewing the R5F11BCEALA#U0 datasheet, R5F11BCEALA#U0 pinout, R5F11BCEALA#U0 application, or R5F11BCEALA#U0 equivalent, key selection criteria include its 36-pin WFLGA (4×4 mm) footprint, −40°C to +85°C A-grade temperature range, 1.6–5.5 V supply, and support for background data flash rewriting (1M cycles) and event-link controller–driven peripheral coordination.

Technical Context

The R5F11BCEALA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It features a dedicated low-speed on-chip oscillator (15 kHz TYP) for watchdog and RTC, plus high-accuracy ±1.0% 64–1 MHz programmable high-speed on-chip oscillator.

Its analog subsystem includes a 15-channel ADC with internal 1.45 V reference and temperature sensor, dual independent 8-bit DACs (0–VDD output), two comparators with selectable internal/external references, and a single-channel PGA - all operating across the full 1.6–5.5 V VDD range without external components.

Key Specifications

Pinout & Package

Package: 36-pin WFLGA (4 × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS), EVDD0/EVSS0 separation supported for noise-sensitive analog operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11BCCALA#U0, the R5F11BCEALA#U0 provides double flash capacity and background data flash rewrite - essential for field-upgradable firmware. Versus R5F11BLEALA#U0, it trades pin count and peripheral count for compact size and lower BOM cost in space-constrained embedded nodes.

Availability

R5F11BCEALA#U0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and portable medical devices requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for R5F11BCEALA#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 IoT markets.

The RL78/G1F product line delivers true low-power performance (66 μA/MHz) with enhanced analog integration - designed specifically for battery-operated industrial and consumer edge devices demanding precision sensing and long operational life.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for the R5F11BCEALA#U0?

The R5F11BCEALA#U0 supports up to 32 MHz CPU operation using the high-speed on-chip oscillator, with a supply voltage range of 1.6 V to 5.5 V at TA = −40°C to +85°C. At 32 MHz, minimum VDD is 2.7 V per electrical specifications; lower frequencies (e.g., 16 MHz) allow operation down to 1.6 V, enabling ultra-low-voltage battery use cases.

Does the R5F11BCEALA#U0 support simultaneous operation of its dual 8-bit DACs?

Yes, the R5F11BCEALA#U0 supports independent and simultaneous output from both 8-bit DAC channels (ANO0 and ANO1). Each DAC has separate data registers and can be updated in real time using timer-triggered or software-initiated writes - enabling dual-channel waveform generation or differential analog output in sensor calibration systems.

How many analog input channels does the R5F11BCEALA#U0 support, and what reference options are available?

The R5F11BCEALA#U0 supports 15 analog input channels (ANI0–ANI7, ANI16–ANI24). It provides internal 1.45 V reference (IVREF0), external AVREFP/AVREFM inputs, and VDD-based referencing - all usable across the full 1.6–5.5 V supply range. The internal reference eliminates need for external precision voltage sources in most sensing applications.

What packaging and thermal specifications apply to the R5F11BCEALA#U0?

The R5F11BCEALA#U0 uses a 36-pin WFLGA package (4 × 4 mm, 0.5 mm pitch) with exposed die pad. It is rated for consumer-grade operation from −40°C to +85°C (A-grade). The package supports EVDD0/EVSS0 separation to isolate analog power domains - critical for achieving specified ADC/DAC accuracy in noisy environments.

Can the R5F11BCEALA#U0 perform data flash writes while executing application code from main flash memory?

Yes, the R5F11BCEALA#U0 supports background operation (BGO) for data flash memory: instructions can be fetched and executed from code flash while simultaneously rewriting the 4 KB data flash area. This enables seamless firmware updates, parameter logging, or calibration storage without halting real-time tasks - a key requirement for always-on embedded systems.