Renesas R5F1216AGSP#50

Overview

R5F1216AGSP#50 from Renesas Electronics is a 20-pin, 32 KB flash, 2 KB RAM RL78/G16 16-bit microcontroller with capacitive touch sensing (15-channel CTSU), 10-bit A/D converter (11-channel), real-time clock with calendar, and industrial-grade temperature range (−40°C to +105°C). It integrates UART, simplified SPI (CSI), simplified I²C, and I²C interfaces for embedded control in space-constrained HMI applications.

For engineers reviewing the R5F1216AGSP#50 datasheet, R5F1216AGSP#50 pinout, R5F1216AGSP#50 application, or R5F1216AGSP#50 equivalent, key selection criteria include its LSSOP-20 package, 32 KB code flash with 1 KB data flash, 10-bit ADC with internal reference, RTC with alarm and correction, and CTSU support for up to 16 keys in mutual-capacitance mode - all operating across −40°C to +105°C.

Technical Context

The R5F1216AGSP#50 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting 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 subsystem includes 32 KB code flash (1 KB block size), 1 KB data flash (512 B block size, 1M rewrite cycles), and 2 KB on-chip RAM.

Peripheral integration includes eight 16-bit timers, one 12-bit interval timer, watchdog timer, RTC2 with 99-year calendar and alarm, 10-bit A/D converter with selectable internal reference (0.815 V), two comparators, and a dedicated capacitive touch sensing unit (CTSU) supporting both self- and mutual-capacitance configurations - all managed via configurable peripheral I/O redirection registers (PIOR).

Key Specifications

Pinout & Package

Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), tape-and-reel packaging (#50 specification), exposed pad not present (LSSOP variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1216CGSP#50, the R5F1216AGSP#50 offers identical functionality but reflects Renesas' A-grade qualification path; versus R5F1214AGSP#50, it adds 16 KB flash, RTC2, and 4 extra pins - enabling richer UIs and time-stamped data logging without external components.

Availability

R5F1216AGSP#50 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, energy monitoring gateways, and battery-powered thermostats requiring stable component supply across extended temperature ranges.

Supply support for R5F1216AGSP#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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G16 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, space-constrained human-machine interface and sensor-control applications - emphasizing integrated touch, timing, and communication without external support ICs.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for the R5F1216AGSP#50?

The R5F1216AGSP#50 achieves a maximum operating frequency of 16 MHz using its on-chip high-speed oscillator. At this speed, the minimum instruction execution time is 0.0625 μs. This timing is confirmed in the RL78/G16 datasheet (R01DS0431EJ0130 Rev.1.30, Section 1.1) and applies directly to the R5F1216AGSP#50 as a member of the G16 family with 32 KB flash and industrial temperature grade.

Does the R5F1216AGSP#50 support background data flash rewriting while executing code from main flash?

No, the R5F1216AGSP#50 does not support background operation (BGO) for data flash rewriting. As specified in the datasheet (R01DS0431EJ0130 Rev.1.30, Section 1.1), instructions cannot be executed from code flash memory during data flash write operations. Code execution must be halted or relocated to RAM during data flash programming sequences in the R5F1216AGSP#50.

What touch sensing configurations does the CTSU in the R5F1216AGSP#50 support, and how many keys can it handle?

The CTSU in the R5F1216AGSP#50 supports both self-capacitance (up to 15 keys, one per pin) and mutual-capacitance (matrix configuration using 15 pins as TX/RX) methods. Mutual-capacitance enables up to 16 keys, as documented in the RL78/G16 datasheet (R01DS0431EJ0130 Rev.1.30, Section 1.1). This capability is inherent to the R5F1216AGSP#50's silicon and requires no external components.

Is an external crystal required for RTC operation in the R5F1216AGSP#50?

No, the R5F1216AGSP#50 includes a dedicated low-speed on-chip oscillator for RTC2 operation, eliminating the need for an external 32.768 kHz crystal. The RTC2 module - featuring 99-year calendar, alarm, and clock correction - operates independently using this internal oscillator, as confirmed in the datasheet (R01DS0431EJ0130 Rev.1.30, Section 1.1).

What is the guaranteed data retention period for the data flash memory in the R5F1216AGSP#50?

The data flash memory in the R5F1216AGSP#50 guarantees 10 years of data retention at temperatures up to +85°C after the final write operation, as specified in the RL78/G16 datasheet (R01DS0431EJ0130 Rev.1.30, Section 1.1). This retention period applies under normal operating conditions and assumes proper voltage and timing compliance during write/erase cycles.