Renesas R5F212H1SDSP#U0

Overview

R5F212H1SDSP#U0 from Renesas Electronics is a 16-bit R8C/Tiny Series microcontroller in 20-pin LSSOP package, featuring 4 KB Flash ROM, 256 bytes RAM, 8-bit timers (RA, RB, RE), 16-bit timer RF, dual UART, hardware LIN module, and voltage detection circuitry. It operates from 2.2 V to 5.5 V with -40°C to +85°C industrial temperature range and supports low-power wait/stop modes for metering and appliance control.

For engineers reviewing the R5F212H1SDSP#U0 datasheet, R5F212H1SDSP#U0 pinout, R5F212H1SDSP#U0 application, or R5F212H1SDSP#U0 equivalent, key selection criteria include its D-version extended temperature rating, integrated LIN transceiver support via UART0+TimerRA, real-time clock capability (Timer RE), 20-pin LSSOP footprint, and on-chip debug with flash rewrite.

Technical Context

The R5F212H1SDSP#U0 implements the R8C/Tiny CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its single-chip mode provides 1 Mbyte address space, with minimum instruction execution time of 125 ns at 8 MHz system clock (VCC = 2.7–5.5 V).

It integrates two on-chip oscillators (high-speed with frequency adjustment, low-speed), XCIN/XCOUT 32 kHz crystal interface, three voltage detectors, two comparators (shared with voltage monitors), and eight CMOS I/O ports plus one output-only port (P4_4). Timer RE enables real-time clock functionality with seconds/minutes/hours/day-of-week counting.

Key Specifications

Pinout & Package

Package: 20-pin LSSOP (PLSP0020JB-A, previous code 20P2F-A), surface-mount, 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F212H1SDSP#U0, R5F212H2SDSP offers scalable memory for complex firmware while retaining full peripheral compatibility, whereas R5F212J1SDSP trades RTC and dual UART for reduced silicon area and lower cost in non-time-critical control roles.

Availability

R5F212H1SDSP#U0 is available at Aetrix Electronics and suitable for smart energy metering, home appliance control, office equipment, industrial HMI panels, and LIN-based automotive subsystems requiring stable component supply across extended temperature ranges.

Supply support for R5F212H1SDSP#U0 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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.

The R8C/2H Group, including R5F212H1SDSP#U0, was designed for cost-effective, low-power embedded control in industrial, consumer, and metering applications - emphasizing integration, noise immunity, and extended temperature operation.

FAQ

What is the operating temperature range for R5F212H1SDSP#U0?

R5F212H1SDSP#U0 is rated for -40°C to +85°C ambient operation (D version), making it suitable for industrial environments, outdoor metering equipment, and automotive body electronics where thermal stability is critical. This specification is confirmed in Table 1.3 of the R8C/2H Group datasheet (REJ03B0217-0100, Rev.1.00).

Does R5F212H1SDSP#U0 support hardware LIN communication?

Yes, R5F212H1SDSP#U0 integrates a hardware LIN module using UART0 and TimerRA per the R8C/2H Group specification. This enables LIN 2.0/2.1 protocol handling without external transceivers, reducing BOM cost and PCB area in automotive and industrial networks.

What is the maximum system clock frequency supported by R5F212H1SDSP#U0?

R5F212H1SDSP#U0 supports up to 8 MHz system clock frequency when powered at 2.7–5.5 V, delivering a minimum instruction execution time of 125 ns. At 4 MHz (VCC = 2.2–5.5 V), minimum execution time is 250 ns - both modes are fully supported per datasheet Table 1.1.

How much Flash memory and RAM does R5F212H1SDSP#U0 contain?

R5F212H1SDSP#U0 contains 4 KB of on-chip Flash memory (with 100-cycle erase/program endurance) and 256 bytes of RAM. These values are explicitly listed in Table 1.3 (Product List for R8C/2H Group) and confirmed in the "Memory" section of the datasheet.

Which package type is used for R5F212H1SDSP#U0?

R5F212H1SDSP#U0 uses the 20-pin LSSOP package with code PLSP0020JB-A (previously 20P2F-A). This surface-mount package has 0.65 mm lead pitch and is documented in Figure 1.1 and Table 1.3 of the R8C/2H Group datasheet.