Renesas R5F1057AGNA#U0

Overview

R5F1057AGNA#U0 from Renesas Electronics is a 24-pin HWQFN-packaged 16 KB flash, 1.5 KB RAM RL78/G11 16-bit microcontroller for industrial embedded control. It operates from 1.6 V to 5.5 V, delivers 33 DMIPS at 24 MHz, consumes 58.3 μA/MHz active current and 0.64 μA in LVD-only mode, and integrates dual 10-bit A/D (11-channel), dual 8-bit D/A, two comparators, PGA, UART×2, CSI×4, I²C×4, TAU timer×4, and ELC event linking - deployed in smart sensor nodes and low-power HMI panels.

For engineers reviewing the R5F1057AGNA#U0 datasheet, R5F1057AGNA#U0 pinout, R5F1057AGNA#U0 application, or R5F1057AGNA#U0 equivalent, key selection criteria include its 24-pin HWQFN (4 × 4 mm, 0.50-mm pitch) package with exposed die pad, industrial −40°C to +105°C rating, 2-KB data flash with 1M rewrite cycles, background operation during flash writes, and support for SNOOZE/STOP/HALT ultra-low-power modes.

Technical Context

The R5F1057AGNA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.04167 μs min @ 24 MHz). Its clock system combines high-speed on-chip oscillator (±1.0% accuracy, 1–24 MHz), middle-speed (4/2/1 MHz), and low-speed (15 kHz) oscillators, plus external crystal support up to 20 MHz.

Peripheral integration includes Event Link Controller (ELC) with 18 event inputs and 4 trigger outputs, Data Transfer Controller (DTC) with 24 activation sources, and Serial Array Unit supporting simultaneous CSI, UART, and I²C operations - enabling deterministic real-time response without CPU intervention for time-critical I/O tasks.

Key Specifications

Pinout & Package

Package: HWQFN-24 (4 mm × 4 mm, 0.50-mm pitch) with exposed die pad (recommended to connect to VSS).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F1057AGNA#U0, R5F1058AGLA#U0 offers higher pin density and EVDD support but requires rework for WFLGA assembly; R5F1056AGSM#10 reduces BOM cost and layout area at the expense of analog channel count and key scan capability - making it viable only when feature set can be pruned.

Availability

R5F1057AGNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat HMIs, programmable logic relays, and energy meter front-ends requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for R5F1057AGNA#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/G11 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering optimized performance-per-milliwatt for battery-operated and thermally constrained industrial controls.

FAQ

What is the maximum operating frequency and associated power consumption of the R5F1057AGNA#U0?

The R5F1057AGNA#U0 achieves 33 DMIPS at 24 MHz using its high-speed on-chip oscillator. At this frequency, typical active current is 58.3 μA/MHz (≈1.4 mA total), verified under VDD = 2.7–5.5 V and TA = −40°C to +85°C. The device maintains full functionality down to 1.6 V, with reduced max frequency (4 MHz) in low-voltage mode.

Does the R5F1057AGNA#U0 support in-system programming and secure firmware updates?

Yes, the R5F1057AGNA#U0 supports full in-system programming via on-chip debug interface and includes boot swap functionality plus flash shield window protection. These features allow safe field firmware updates with rollback capability and prevent unauthorized access to protected memory regions during execution.

How many analog input channels does the R5F1057AGNA#U0 support, and what reference options are available?

The R5F1057AGNA#U0 integrates an 11-channel 10-bit A/D converter with selectable references: external AVREFP/AVREFM pins or internal 1.45 V reference. Channels include ANI0–ANI3 (dedicated analog pins) and ANI16–ANI22 (shared with port functions), enabling flexible sensor interface design without external reference ICs.

What packaging and thermal specifications apply to the R5F1057AGNA#U0?

The R5F1057AGNA#U0 is supplied in a 24-pin HWQFN package (4 mm × 4 mm, 0.50-mm pitch) with exposed die pad. It is rated for industrial operation from −40°C to +105°C ambient temperature and requires a 0.47–1 μF capacitor between REGC and VSS for stable internal regulator performance.

Can the R5F1057AGNA#U0 generate precise audio tones or PWM signals for buzzer or LED control?

Yes, the R5F1057AGNA#U0 includes dedicated programmable clock/buzzer output circuits (PCLBUZ0/PCLBUZ1) capable of generating frequencies from 117 Hz to 10 MHz - including standard audio tones (e.g., 2.44 kHz, 4.88 kHz) and precise PWM for LED dimming or piezo driver control, all managed independently of CPU load.