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Renesas R5F212H1SNSP#U0
- Part No.:
- R5F212H1SNSP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F212H1SNSP#U0.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,254
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Product details
Overview
R5F212H1SNSP#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 interfaces, hardware LIN module, and voltage detection circuitry. It operates at up to 8 MHz (VCC = 2.7–5.5 V) with 5 mA active current and supports electric power meters and consumer appliance control.
For engineers reviewing the R5F212H1SNSP#U0 datasheet, R5F212H1SNSP#U0 pinout, R5F212H1SNSP#U0 application, or R5F212H1SNSP#U0 equivalent, key selection criteria include its N-version temperature range (−20°C to +85°C), integrated LIN transceiver support via UART0+TimerRA, low-power stop mode (0.7 µA), and 20-pin PLSP0020JB-A package compatibility.
Technical Context
The R5F212H1SNSP#U0 implements the R8C/Tiny CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map allocates 4 KB Flash (0xF000–0xFFFF), 256 bytes RAM (0x0400–0x04FF), and SFRs (0x0000–0x02FF), supporting single-chip operation across 1 Mbyte address space.
It integrates dual on-chip oscillators (high-speed with frequency adjustment, low-speed), XCIN/XCOUT 32 kHz crystal interface, and three voltage detection circuits for power-on reset and brown-out monitoring. Peripheral set includes two UARTs (UART0, UART2), hardware LIN (using UART0 and TimerRA), and four independent timer modules with capture/compare, PWM, and real-time clock (Timer RE) functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit core with 89 instructions, 125 ns min instruction time at 8 MHz |
| Memory | 4 KB Flash ROM (reprogrammable, 100-cycle endurance), 256 bytes RAM |
| Operating Voltage | 2.2–5.5 V supply range; supports 4 MHz @ 2.2 V or 8 MHz @ 2.7 V |
| Power Consumption | 5 mA active (5 V, 8 MHz), 23 µA wait mode (3 V), 0.7 µA stop mode (3 V) |
| Timers | Timer RA/RB (8-bit ×2), Timer RE (8-bit real-time clock), Timer RF (16-bit with capture/compare) |
| Serial Interfaces | UART0 + UART2 (clock-synchronous serial I/O/UART ×2), hardware LIN via UART0 + TimerRA |
| Package | 20-pin LSSOP, package code PLSP0020JB-A (JEDEC MS-013AC variant) |
Pinout & Package
Package: 20-pin LSSOP (PLSP0020JB-A), 0.65 mm pitch, body size 7.6 × 4.4 mm, exposed pad not present. Compatible with standard surface-mount reflow profiles for lead-free assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | P6_4 / RXD2 | UART2 receive input; configurable as general-purpose CMOS I/O |
| 2 | P3_7 / TRAO / TRFO11 | Timer RA output or Timer RF output 11; bidirectional I/O port |
| 3 | RESET | Active-low asynchronous reset input; internal pull-up enabled |
| 4 | XCOUT / P4_4 | Crystal oscillator output or general-purpose output-only port |
| 5 | VSS | Digital ground reference; must be connected to system GND |
| 6 | XCIN / P4_3 | Crystal oscillator input or general-purpose I/O; accepts external 32 kHz clock |
| 7 | VCC | Main power supply (2.2–5.5 V); decoupling capacitor required near pin |
| 8 | MODE | Boot mode select; tied to VCC via resistor for normal operation |
| 9 | P4_5 / INT0 | External interrupt 0 input; also serves as general-purpose CMOS I/O |
| 10 | P1_7 / TRAIO / INT1 | Timer RA I/O or external interrupt 1; supports key-input wake-up |
| 11 | P1_6 / CLK0 / VCOUT2 | UART0 clock I/O or comparator 2 output; shared function pin |
| 12 | P1_5 / RXD0 / TRAIO / INT1 | UART0 receive input or Timer RA I/O or interrupt 1; software-configurable |
| 13 | P1_4 / TXD0 | UART0 transmit output; also general-purpose CMOS I/O |
| 14 | P1_3 / KI3 / TRBO / VCOUT1 | Key-input interrupt 3, Timer RB output, or comparator 1 output |
| 15 | P1_2 / KI2 / TRFO02 / CVREF | Key-input interrupt 2, Timer RF output 02, or comparator reference input |
| 16 | P6_5 / TREO / CLK2 | Timer RE output or UART2 clock I/O; real-time clock pulse source |
| 17 | P1_1 / KI1 / TRFO01 / VCMP2 | Key-input interrupt 1, Timer RF output 01, or comparator 2 analog input |
| 18 | P1_0 / KI0 / TRFO00 / VCMP1 | Key-input interrupt 0, Timer RF output 00, or comparator 1 analog input |
| 19 | P3_3 / TRFO10 / TRFI | Timer RF output 10 or Timer RF input; supports event counting and capture |
| 20 | P6_3 / TXD2 | UART2 transmit output; also general-purpose CMOS I/O |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/2.1 support using UART0 and TimerRA - eliminates external transceiver in automotive body electronics |
| Real-Time Clock (Timer RE) | 8-bit counter with seconds/minutes/hours/days-of-week tracking - enables calendar-based wake-up without external RTC |
| Low-Power Stop Mode | 0.7 µA consumption (3 V, BGR trimming disabled) - extends battery life in metering and remote sensor applications |
| Voltage Detection Circuit | Three independent voltage monitors with power-on reset and brown-out detection - ensures reliable boot and fault-safe operation |
| On-Chip Oscillators | High-speed (adjustable 1–20 MHz) and low-speed (32 kHz) oscillators - eliminates need for external crystals in cost-sensitive designs |
Applications
| Smart Energy Metering | Home Appliance Control |
|---|---|
|
Use Scenario: Residential electricity meter with tariff switching, tamper detection, and RS-485 communication. IC Role / Device Role / Timing Role: Main system controller executing metrology firmware, managing UART2 for RS-485, and using Timer RE for billing interval timing. Use Value: Integrated voltage detection prevents erroneous readings during brown-out; 4 KB Flash accommodates encryption and tariff logic. |
Use Scenario: Washing machine main board controlling motor drive, water valves, and user interface. IC Role / Device Role / Timing Role: Central MCU coordinating PWM-driven motor control (via Timer RB), key scan (KI0–KI3), and display UART (UART0). Use Value: 23 µA wait mode reduces standby power; hardware LIN simplifies communication with door lock or detergent dispenser modules. |
| Office Equipment | Audio System Remote Control |
|
Use Scenario: Laser printer engine controller managing paper feed, fuser temperature, and host USB-to-parallel bridge. IC Role / Device Role / Timing Role: Real-time task scheduler using 7-level interrupt priority and Timer RF for precise motor phase timing. Use Value: Dual UARTs enable simultaneous host interface and internal subsystem communication; 256 bytes RAM suffices for print job buffering. |
Use Scenario: IR remote control transmitter with multi-device learning and button backlighting. IC Role / Device Role / Timing Role: Low-power key scanner (KI0–KI3) with wake-on-press, driving LED backlight via Timer RB PWM. Use Value: 0.7 µA stop mode enables >1-year CR2032 battery life; on-chip oscillator eliminates timing crystal for BOM reduction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F212H2SNSP | 8 KB Flash, 384 bytes RAM - no change in peripherals, package, or pinout | Supports larger firmware images (e.g., OTA update stack, enhanced UI) | Select when firmware exceeds 4 KB or requires additional data buffers |
| R5F212H1SDSP | Same memory, but D-version (-40°C to +85°C operating range) and enhanced EMI immunity | Suitable for automotive cabin modules or industrial outdoor enclosures | Choose for extended temperature environments where N-version derating is insufficient |
Compared with R5F212H1SNSP#U0, R5F212H2SNSP offers double Flash capacity without altering peripheral configuration or layout, while R5F212H1SDSP maintains identical functionality under wider ambient conditions-both require no PCB revision but differ in qualification scope and memory headroom.
Availability
R5F212H1SNSP#U0 is available at Aetrix Electronics and suitable for smart energy metering, home appliance control, office equipment, audio system remotes, and industrial HMI requiring stable component supply across long-life product cycles.
Supply support for R5F212H1SNSP#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 merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.
The R5F212H1SNSP#U0 belongs to the R8C/2H Group - a cost-optimized 16-bit MCU family targeting consumer, metering, and industrial control with integrated LIN, low-power modes, and robust noise immunity.
FAQ
What is the maximum system clock frequency supported by the R5F212H1SNSP#U0?
The R5F212H1SNSP#U0 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 clock is reduced to 4 MHz to ensure stable operation. This dual-frequency capability allows design flexibility across varying power rail configurations without changing the R5F212H1SNSP#U0 part number.
Does the R5F212H1SNSP#U0 include a real-time clock (RTC) function?
Yes, the R5F212H1SNSP#U0 includes Timer RE - an 8-bit real-time clock module capable of counting seconds, minutes, hours, and days of the week. It operates independently in low-power modes and supports output compare for alarm generation. This integrated RTC eliminates the need for external timekeeping ICs in applications like energy meters and appliance timers.
What LIN protocol versions does the R5F212H1SNSP#U0 hardware module support?
The R5F212H1SNSP#U0 implements a hardware LIN module compliant with LIN 2.0 and LIN 2.1 specifications. It uses UART0 for serial framing and TimerRA for baud rate generation and synchronization, enabling full master/slave node functionality without software bit-banging. This is confirmed in the R8C/2H Group hardware manual section 1.1.1 and Table 1.1 serial interface listing.
Is the R5F212H1SNSP#U0 pin-compatible with other members of the R8C/2H Group?
Yes, all R8C/2H Group MCUs in the PLSP0020JB-A (20-pin LSSOP) package - including R5F212H1SNSP, R5F212H2SNSP, R5F212H1SDSP, and R5F212H2SDSP - share identical pin assignments and electrical characteristics. Firmware and PCB layouts designed for R5F212H1SNSP#U0 can be reused across these variants with only memory size and temperature grade differences.
What debug capabilities are available on the R5F212H1SNSP#U0?
The R5F212H1SNSP#U0 supports on-chip debugging via the single-wire background debug interface (BDI), enabling full breakpoint, step-through, and register inspection without halting real-time peripherals. It also provides on-board flash rewrite capability for field firmware updates - both features are documented in Section 1.1.2 Flash Memory and confirmed in the R8C/2H Group user's manual.
R5F212H1SNSP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/2x/2H
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- LINbus, SIO, UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 15
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.2V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F212H1SNSP#U0 FAQ
1.How can I place an order for R5F212H1SNSP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F212H1SNSP#U0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R5F212H1SNSP#U0 reliable?
The price and inventory of R5F212H1SNSP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F212H1SNSP#U0 is usually 5 days.
3.What payment methods are accepted for R5F212H1SNSP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F212H1SNSP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F212H1SNSP#U0?
R5F212H1SNSP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F212H1SNSP#U0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R5F212H1SNSP#U0?
For technical support, including R5F212H1SNSP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F212H1SNSP#U0 requirements.
6.How does Aetrix verify that R5F212H1SNSP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F212H1SNSP#U0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F212H1SNSP#U0 meets industry standards.
7.What is the process for return or replacement of R5F212H1SNSP#U0?
All R5F212H1SNSP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F212H1SNSP#U0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R5F212H1SNSP#U0 part is unused and in its original packaging.
Return procedure for R5F212H1SNSP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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