Renesas R5F10KBCAFP#V0

Overview

R5F10KBCAFP#V0 from Renesas Electronics is a 32-pin LQFP 16-bit RL78/G1C microcontroller with integrated USB function controller (no host capability), 32 KB flash, 2 KB data flash, 5.5 KB RAM, and ultra-low-power operation down to 0.57 µA in RTC+LVD halt mode. It delivers 31 DMIPS at 24 MHz and targets USB-powered consumer devices requiring battery efficiency, real-time clock, analog sensing, and compact footprint.

For engineers reviewing the R5F10KBCAFP#V0 datasheet, R5F10KBCAFP#V0 pinout, R5F10KBCAFP#V0 application, or R5F10KBCAFP#V0 equivalent, this MCU is selected for USB peripheral designs where full-speed (12 Mbps) device-mode connectivity, on-chip debug, 8/10-bit ADC (9 channels), and 2.4–5.5 V single-supply operation are required - especially in space-constrained, cost-sensitive, low-power embedded systems.

Technical Context

The R5F10KBCAFP#V0 implements the RL78 16-bit CISC Harvard architecture with 3-stage pipeline, enabling 86% of instructions in 1–2 cycles and 16×16 multiply in 1 cycle. Its USB subsystem complies with USB 2.0 specification as a function-only controller supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) modes, plus Battery Charging Specification Rev. 1.2 and Apple MFi 2.1A/1.0A charging modes.

Power management includes dual oscillators (24 MHz ±1% HOCO, 32.768 kHz XTAL), POR/LVD with 9 voltage thresholds, and multiple low-power modes: Stop (0.23 µA RAM-retained), Halt (0.57 µA RTC+LVD), and Snooze. The analog subsystem integrates a 9-channel 8/10-bit ADC (2.1 µs min conversion), internal 1.45 V reference, and on-chip temperature sensor.

Key Specifications

Pinout & Package

32-pin plastic LQFP (7 × 7 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS. Pin functions include dedicated USB I/O (UDP0/UDM0/UVBUS/UVDD), 9 analog inputs (ANI0–ANI4, ANI16–ANI19), 22 general-purpose I/O with interrupt capability (INTP0–INTP9), and dual serial interfaces (CSI00/CSI01, I²C00/I²C01).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB function controller applications.

Compared with R5F10JBCAFP#V0, the R5F10KBCAFP#V0 reduces pin count and removes host-mode circuitry to lower cost and layout complexity for pure peripheral use; versus R5F10KGC AFP#V0, it trades I/O scalability for smaller footprint and lower unit price in space-constrained USB endpoints.

Availability

R5F10KBCAFP#V0 is available at Aetrix Electronics and suitable for USB human interface devices, smart sensor nodes, USB charging adapters, and industrial control panels requiring stable component supply and long-term manufacturability.

Supply support for R5F10KBCAFP#V0 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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G1C product line is designed specifically for ultra-low-power USB-peripheral applications, integrating USB function controllers, rich analog peripherals, and energy-efficient RL78 cores to replace discrete USB interface + MCU combinations in cost-sensitive consumer electronics.

FAQ

What USB specifications does the R5F10KBCAFP#V0 support?

The R5F10KBCAFP#V0 supports USB 2.0 as a function-only controller, including full-speed (12 Mbps) and low-speed (1.5 Mbps) modes. It complies with Battery Charging Specification Revision 1.2 and implements Apple Inc. MFi 2.1A/1.0A charging modes - all verified in the R01DS0348EJ0140 datasheet. The R5F10KBCAFP#V0 does not support USB host functionality or high-speed (480 Mbps) operation.

Does the R5F10KBCAFP#V0 require an external crystal for USB operation?

No, the R5F10KBCAFP#V0 can operate its USB function controller using the internal 24 MHz high-speed on-chip oscillator (HOCO) with ±1% accuracy across 2.4–5.5 V and −20°C to +85°C - sufficient for USB full-speed timing compliance. An external 32.768 kHz crystal is optional and only required if enhanced RTC accuracy or low-power subsystem clocking is needed beyond the internal 15 kHz oscillator.

What is the maximum ADC resolution and channel count supported by the R5F10KBCAFP#V0?

The R5F10KBCAFP#V0 integrates a 9-channel 8/10-bit successive approximation ADC with a minimum conversion time of 2.1 µs. Channels include ANI0–ANI4, ANI16–ANI19. Resolution is selectable per channel; 10-bit mode provides 1024 levels with reference options of AVREFP, internal 1.45 V, or VDD - confirmed in Section 1.1 Features and Table 1-1 of the R01DS0348EJ0140 datasheet.

How does the R5F10KBCAFP#V0 achieve ultra-low-power operation in halt mode?

The R5F10KBCAFP#V0 achieves 0.57 µA halt mode current by disabling the CPU, flash, and most peripherals while retaining RTC and low-voltage detector (LVD) operation. This state uses the internal 15 kHz low-speed oscillator and optimized power gating - validated in Section 1.1 Features (Halt: 0.57 µA) and requires proper REGC capacitor (0.47–1 µF) connection to VSS per datasheet Caution on Page 4.

Is the R5F10KBCAFP#V0 pin-compatible with other RL78/G1C variants in the same package?

Yes, the R5F10KBCAFP#V0 is pin-compatible with R5F10JBCAFP#V0 in the 32-pin LQFP package - both share identical pin assignments for power, reset, USB, analog, and GPIO. However, R5F10JBCAFP#V0 exposes additional USB host pins (UDP1/UDM1, UOVRCUR0/1, UVBUSEN0/1) as NC on R5F10KBCAFP#V0, making R5F10KBCAFP#V0 a functional subset suitable for drop-in replacement where host features are unused.