Renesas R5F1216AMSP#50

Overview

R5F1216AMSP#50 from Renesas Electronics is a 20-pin, industrial-grade RL78/G16 microcontroller with 32 KB flash, 2 KB RAM, and integrated capacitive touch sensing (15-channel CTSU). It operates from 2.4–5.5 V, supports −40°C to +125°C ambient, and delivers ultra-low-power operation with HALT/STOP modes and 61-µA/MHz active current at 125°C.

For engineers reviewing the R5F1216AMSP#50 datasheet, R5F1216AMSP#50 pinout, R5F1216AMSP#50 application, or R5F1216AMSP#50 equivalent, key selection considerations include its LSSOP-20 package, 10-bit A/D converter (11-channel), dual serial interfaces (UART + simplified I²C), real-time clock with calendar function, and hardware-based touch sensing for robust HMI in thermally demanding environments.

Technical Context

The R5F1216AMSP#50 implements the RL78 CPU core-a CISC architecture with 3-stage pipeline-supporting configurable instruction execution times from 0.0625 µs (@16 MHz high-speed on-chip oscillator) to 30.5 µs (@32.768 kHz subsystem clock). Its memory map spans 1 MB address space with banked 8-bit general-purpose registers.

It integrates dedicated peripherals including an 8/10-bit A/D converter with internal reference (0.815 V), two comparators, a 99-year RTC with alarm and correction, and a 16-bit timer array with eight channels. The CTSU supports both self-capacitance (15 keys) and mutual-capacitance (16-key matrix) configurations without external components.

Key Specifications

Pinout & Package

Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), lead-free, RoHS-compliant, rated for industrial M-grade (−40°C to +125°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1216CGSP#50 and R5F1216CMSM#5F, the R5F1216AMSP#50 uniquely combines M-grade thermal resilience with LSSOP-20's compact footprint and proven reflow yield-making it optimal for space-constrained, high-reliability industrial nodes.

Availability

R5F1216AMSP#50 is available at Aetrix Electronics and suitable for industrial motor drives, smart home thermostats, and automotive cabin control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F1216AMSP#50 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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G16 product line delivers true low-power performance with integrated capacitive touch and extended temperature operation-designed specifically for cost-sensitive, thermally demanding embedded control applications.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for the R5F1216AMSP#50?

The R5F1216AMSP#50 supports up to 16 MHz operation using its high-speed on-chip oscillator, delivering a minimum instruction execution time of 0.0625 µs. This timing is confirmed in the RL78/G16 datasheet Rev.1.30, Section 1.1 Features, and applies directly to the R5F1216AMSP#50 under VDD = 2.4–5.5 V and TA = −40°C to +125°C conditions.

Does the R5F1216AMSP#50 support background data flash rewriting while executing code from main flash?

No, the R5F1216AMSP#50 does not support background operation (BGO) for data flash. As stated in the datasheet Section 1.1, "Background operation (BGO) is not supported (instructions cannot be executed from the code flash memory while rewriting the data flash memory)." Code execution must be halted during data flash writes, requiring careful state management in the R5F1216AMSP#50 firmware.

How many capacitive touch sensing channels does the R5F1216AMSP#50 support, and what configuration modes are available?

The R5F1216AMSP#50 integrates a 15-channel Capacitive Touch Sensing Unit (CTSUb) supporting both self-capacitance (up to 15 independent keys) and mutual-capacitance (matrix configuration supporting up to 16 keys) modes. These capabilities are documented in Section 1.1 Features and Table 1-4 of the R5F1216AMSP#50 datasheet, with no external components required for either mode.

What is the A/D converter resolution, input count, and reference voltage option for the R5F1216AMSP#50?

The R5F1216AMSP#50 features an 8/10-bit A/D converter with 11 analog input channels (ANI0–ANI10), selectable resolution per conversion, and an internal reference voltage of 0.815 V (typical). It also supports external reference inputs and includes an integrated temperature sensor-details confirmed in Section 1.1 A/D converter and Table 1-4 of the official datasheet.

Is the R5F1216AMSP#50 pin-compatible with other RL78/G16 variants in the same package type?

Yes, the R5F1216AMSP#50 is pin-compatible with all other RL78/G16 devices in the 20-pin LSSOP package (e.g., R5F1216CGSP#50, R5F1216CASP#50), sharing identical pin functions, electrical characteristics, and mechanical footprint. This compatibility is explicitly defined in Figure 1-1 and Table 1-1 of the RL78/G16 datasheet Rev.1.30.