Renesas R5F1214CASP#70

Overview

R5F1214CASP#70 from Renesas Electronics is a 16-pin RL78/G16 16-bit microcontroller with 32 KB code flash, 2 KB RAM, and integrated capacitive touch sensing (15-channel CTSU), operating from 2.4–5.5 V across −40°C to +105°C for industrial applications. It features an RL78 CPU core with variable instruction timing (0.0625 μs @ 16 MHz to 30.5 μs @ 32.768 kHz), 8× 16-bit timers, 10-bit A/D converter (11-channel), and dual serial interfaces including UART, simplified SPI (CSI), and I²C.

For engineers reviewing the R5F1214CASP#70 datasheet, R5F1214CASP#70 pinout, R5F1214CASP#70 application, or R5F1214CASP#70 equivalent, key selection considerations include its LSSOP-16 package with 0.65-mm pitch, industrial-grade temperature range (−40°C to +105°C), on-chip RTC with calendar and alarm, and support for background data flash rewrites at 1 million cycles - critical for firmware-over-the-air updates in embedded control systems.

Technical Context

The R5F1214CASP#70 implements the RL78 CPU core with a 3-stage pipeline CISC architecture and 1 MB address space, enabling deterministic real-time execution. Its power management includes HALT and STOP modes, SPOR reset circuitry with three selectable thresholds, and a high-speed on-chip oscillator (1–16 MHz, ±1.0% accuracy at TA = −20 to +85°C).

Peripheral integration centers on mixed-signal capability: a 10-bit A/D converter with internal reference (0.815 V) and temperature sensor, two comparator channels with selectable reference sources, and a dedicated capacitive touch sensing unit supporting both self- and mutual-capacitance configurations up to 16 keys - all managed without CPU intervention via hardware acceleration.

Key Specifications

Pinout & Package

Package: 16-pin plastic SSOP (4.4 × 5.0 mm, 0.65-mm pitch), RoHS-compliant, industrial-grade thermal performance (θ_JA = 90°C/W typical).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1214AASP#70, the R5F1214CASP#70 delivers double the code flash capacity and guaranteed industrial temperature operation; versus R5F1214CGSP#70, it shares identical silicon and functionality but reflects distinct ordering and traceability handling per Renesas packaging specification #70 (tray).

Availability

R5F1214CASP#70 is available at Aetrix Electronics and suitable for industrial automation controllers, smart home HMI modules, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F1214CASP#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 targets cost-optimized, ultra-low-power embedded control applications requiring integrated analog peripherals, capacitive touch, and robust industrial temperature operation - designed specifically for appliance, sensor, and HMI use cases.

FAQ

What is the maximum operating frequency and instruction timing of the R5F1214CASP#70?

The R5F1214CASP#70 supports a high-speed on-chip oscillator up to 16 MHz, delivering a minimum instruction execution time of 0.0625 μs under those conditions. At lower frequencies - such as 32.768 kHz using the subsystem clock - the minimum instruction time extends to 30.5 μs. This variable timing enables precise trade-offs between performance and power consumption in the R5F1214CASP#70.

Does the R5F1214CASP#70 support in-system programming and secure firmware updates?

Yes, the R5F1214CASP#70 supports self-programming of its 32 KB code flash memory without requiring a boot swap function. It also includes a flash shield window feature to protect critical firmware sections from unauthorized overwrite. These capabilities enable secure over-the-air (OTA) updates and field firmware upgrades directly within the R5F1214CASP#70's operational environment.

How many capacitive touch channels does the R5F1214CASP#70 support, and what configuration options exist?

The R5F1214CASP#70 integrates a 15-channel capacitive touch sensing unit (CTSU). It supports self-capacitance mode - where each pin serves one key - for up to 15 independent touch inputs. It also supports mutual-capacitance matrix mode, allowing up to 16 keys using transmit/receive pin combinations selected from the same 15 pins. This flexibility is implemented entirely in hardware within the R5F1214CASP#70.

What are the key differences between R5F1214CASP#70 and R5F1214CGSP#70?

Both R5F1214CASP#70 and R5F1214CGSP#70 share identical silicon, electrical specifications, package (16-pin SSOP), and functional capabilities - including 32 KB flash, 2 KB RAM, CTSU, and industrial temperature range (−40°C to +105°C). The distinction lies solely in packaging specification: #70 denotes tray packaging for R5F1214CASP#70, while #70 for R5F1214CGSP#70 reflects the same physical form but different Renesas traceability labeling for G-grade compliance documentation.

Can the R5F1214CASP#70 operate from a single 3.3 V supply, and what analog references are available?

Yes, the R5F1214CASP#70 operates fully across 2.4 V to 5.5 V, making it compatible with standard 3.3 V systems. Its 10-bit A/D converter supports multiple reference options: external VDD, internal 0.815 V reference (typical), temperature sensor output, and touch voltage (TSCAP). These references are selectable per channel, enabling simultaneous measurement of diverse analog signals - such as battery voltage, temperature, and touch capacitance - within the R5F1214CASP#70.