Renesas R5F212H2SNSP#U0

Overview

R5F212H2SNSP from Renesas Electronics is an 8 KB Flash, 384-byte RAM 20-pin LSSOP 8-bit MCU in the R8C/2H Group, featuring R8C/Tiny CPU core, dual UART (UART0/UART2), hardware LIN, 8-bit timers RA/RB/RE and 16-bit timer RF, and operating at up to 8 MHz (VCC = 2.7–5.5 V) for embedded control in electric power meters and appliance motor drives.

For engineers reviewing the R5F212H2SNSP datasheet, R5F212H2SNSP pinout, R5F212H2SNSP application, or R5F212H2SNSP equivalent, key selection criteria include Flash size (8 KB), dual UART + LIN support, real-time clock capability (Timer RE), low-power stop mode (0.7 µA), and -20°C to +85°C temperature grade (N version).

Technical Context

The R5F212H2SNSP implements the R8C/Tiny Series CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. It supports single-chip operation across a 1 Mbyte address space and executes instructions in as little as 125 ns at 8 MHz.

It integrates voltage detection (3 circuits), two comparators (shared with voltage monitors), on-chip high-/low-speed oscillators with frequency adjustment, and programmable low-power modes including wait (23 µA) and stop (0.7 µA). Peripheral set includes UART0/UART2, LIN module (using Timer RA and UART0), and four independent timers (RA, RB, RE, RF) with capture/compare, PWM, and real-time clock functions.

Key Specifications

Pinout & Package

Package: 20-pin LSSOP (PLSP0020JB-A, formerly 20P2F-A), surface-mount, 0.65 mm pitch, 7.6 × 4.4 mm body.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit MCU applications.

Compared with R5F212H1SNSP and R5F212J1SNSP, the R5F212H2SNSP uniquely delivers 8 KB Flash with dual UART, integrated LIN, and Timer RE-based real-time clock - making it the only option among the three qualified for smart meter firmware with battery-backed timekeeping and fieldbus coexistence.

Availability

R5F212H2SNSP is available at Aetrix Electronics and suitable for smart energy metering, home appliance motor control, office automation, audio system interfaces, and industrial sensor nodes requiring stable component supply across long-lifecycle production programs.

Supply support for R5F212H2SNSP 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, and power solutions for industrial, automotive, and consumer markets.

The R8C/2H Group, including the R5F212H2SNSP, was designed for cost-sensitive, low-power embedded control in metering, appliances, and office equipment - emphasizing integration of LIN, real-time clock, and noise-immune operation.

FAQ

What is the maximum system clock frequency supported by the R5F212H2SNSP?

The R5F212H2SNSP supports a maximum system clock frequency of 8 MHz when operating within the 2.7–5.5 V supply range. At lower voltages (2.2–5.5 V), the maximum rated frequency is 4 MHz. This specification is defined in the official Renesas R8C/2H Group datasheet (REJ03B0217-0100, Rev.1.00), and the 125 ns minimum instruction execution time directly corresponds to the 8 MHz clock condition.

Does the R5F212H2SNSP include a real-time clock (RTC) function?

Yes, the R5F212H2SNSP includes a dedicated real-time clock function implemented in Timer RE - an 8-bit timer capable of counting seconds, minutes, hours, and days of week. It operates using the 32 kHz crystal connected to XCIN/XCOUT pins and remains functional in wait and stop modes, enabling battery-backed timekeeping. This is confirmed in Table 1.1 and Section 1.1.2 of the R8C/2H Group datasheet.

What is the operating temperature range for the R5F212H2SNSP part number?

The R5F212H2SNSP is the N version, specified for an operating ambient temperature range of -20°C to +85°C. This is explicitly stated in Table 1.3 (Product List for R8C/2H Group) and footnote (1) of Table 1.1. The D version (e.g., R5F212H2SDSP) extends the lower limit to -40°C, but the R5F212H2SNSP itself is rated only to -20°C.

How many UART interfaces does the R5F212H2SNSP provide?

The R5F212H2SNSP provides two independent UART interfaces: UART0 and UART2. This is clearly documented in Table 1.1 ("Serial Interface" row) and visually confirmed in Figure 1.3 (Block Diagram of R8C/2H Group). UART0 supports LIN functionality, while UART2 offers a secondary serial channel - a distinguishing feature versus the R8C/2J Group, which includes only UART0.

Is the R5F212H2SNSP pin-compatible with other devices in the R8C/2H family?

Yes, the R5F212H2SNSP shares the same 20-pin LSSOP package (PLSP0020JB-A) and identical pin assignment with all other R8C/2H Group members, including R5F212H1SNSP and R5F212H2SDSP. Pin functions are fully consistent across the group, as verified in Figure 1.5 and Table 1.5 of the R8C/2H Group datasheet - enabling drop-in replacement within the same temperature grade.