Renesas R5F1214CGSP#70

Overview

R5F1214CGSP#70 from Renesas Electronics is a 16-pin, 32 KB flash, 2 KB RAM RL78/G16 microcontroller with integrated capacitive touch sensing (15-channel CTSU), 10-bit A/D converter (11-channel), and real-time clock (99-year calendar). It operates from 2.4–5.5 V and supports industrial temperature range (−40°C to +105°C), targeting low-power HMI control in appliance panels and industrial operator interfaces.

For engineers reviewing the R5F1214CGSP#70 datasheet, R5F1214CGSP#70 pinout, R5F1214CGSP#70 application, or R5F1214CGSP#70 equivalent, key selection criteria include its 16-pin SSOP package, 32 KB code flash with self-programming, 15-channel touch sensing unit, and dual serial interface support (I²C + UART + CSI) for sensor and display connectivity.

Technical Context

The R5F1214CGSP#70 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting variable instruction execution time (0.0625 μs at 16 MHz to 30.5 μs at 32.768 kHz). Its on-chip peripherals include eight 16-bit timers, one 12-bit interval timer, watchdog timer, and RTC2 with alarm and clock correction.

It integrates analog functions including an 8/10-bit A/D converter with internal reference (0.815 V), two comparators with selectable reference sources, and a dedicated capacitive touch sensing unit (CTSU) supporting both self- and mutual-capacitance configurations across up to 16 keys.

Key Specifications

Pinout & Package

Package: 16-pin plastic SSOP (4.4 × 5.0 mm, 0.65-mm pitch), RoHS-compliant, industrial-grade G-temp rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1214AGSP#70, the R5F1214CGSP#70 adds 16 KB flash capacity and industrial-grade thermal margin; compared with R5F1214CMSP#70, it trades +20°C upper limit for lower cost and identical peripheral functionality in standard industrial settings.

Availability

R5F1214CGSP#70 is available at Aetrix Electronics and suitable for appliance control panels, industrial HMIs, smart energy meters, and medical device keypads requiring stable component supply and long-term industrial qualification.

Supply support for R5F1214CGSP#70 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G16 product line delivers ultra-low-power, high-integration MCUs optimized for cost-sensitive, touch-enabled human-machine interfaces in industrial and consumer appliances.

FAQ

What is the maximum operating frequency and instruction timing of the R5F1214CGSP#70?

The R5F1214CGSP#70 features an RL78 CPU core with configurable instruction timing: minimum execution time is 0.0625 μs at 16 MHz (using high-speed on-chip oscillator), and extends to 30.5 μs at 32.768 kHz (subsystem clock). This flexibility allows dynamic trade-offs between performance and power consumption in battery-operated or thermally constrained designs. The R5F1214CGSP#70 supports clock source selection including internal oscillators and external crystals.

Does the R5F1214CGSP#70 support in-system programming and debugging without external tools?

Yes, the R5F1214CGSP#70 integrates on-chip debug (OCD) functionality accessible via the TOOL0, TOOLRxD, and TOOLTxD pins. It supports full in-circuit debugging and flash programming through a single-wire interface, eliminating the need for external debug probes during development. The R5F1214CGSP#70 also enables self-programming of code flash and data flash without boot swap, simplifying field firmware updates.

How many capacitive touch channels does the R5F1214CGSP#70 support, and what configurations are possible?

The R5F1214CGSP#70 includes a dedicated 15-channel capacitive touch sensing unit (CTSU) supporting both self-capacitance (15 independent keys) and mutual-capacitance (matrix configuration up to 16 keys) modes. All 15 channels map directly to GPIO pins (P00–P07, P10–P13, P16–P17, P20–P23, P40–P43), with flexible routing via peripheral I/O redirection registers. The R5F1214CGSP#70's CTSU operates independently of CPU load and includes built-in noise cancellation.

What are the analog capabilities of the R5F1214CGSP#70, particularly regarding A/D conversion and references?

The R5F1214CGSP#70 integrates an 8/10-bit successive-approximation A/D converter with up to 11 analog input channels (ANI0–ANI10). It supports internal reference voltages (0.815 V typical), external references, and includes a calibrated temperature sensor. Two analog comparators (IVCMP0/IVCMP1) with selectable internal/external references and high/low-speed modes are also provided. These analog resources are fully compatible with the R5F1214CGSP#70's 2.4–5.5 V supply range.

Is the R5F1214CGSP#70 pin-compatible with other RL78/G16 variants in the same package?

Yes, the R5F1214CGSP#70 is pin-compatible with all 16-pin SSOP variants in the RL78/G16 family, including R5F1214Axxx and R5F1214Mxxx suffixes. Pin functions-including power, reset, debug, analog inputs, touch channels, timers, and serial interfaces-are identical across these variants. Differences are limited to memory size (16 KB vs. 32 KB), temperature grade (A/G/M), and flash configuration, enabling drop-in replacement during design iteration or qualification upgrades. The R5F1214CGSP#70 maintains full functional and mechanical compatibility with its siblings in the SP package.