My Inquiry
My Account
Renesas R5F2120AKFP#U0
- Part No.:
- R5F2120AKFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F2120AKFP#U0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,073
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F2120AKFP#U0 from Renesas Electronics is a 16-bit R8C/20 Group microcontroller with 96 KB flash program memory, 5 KB RAM, and a 48-pin LQFP package. It features an R8C CPU core, 12-channel 10-bit A/D converter, dual UARTs, LIN module, I²C interface, and timers including 16-bit Timer RD (2 channels) for motor control or signal capture in automotive body electronics.
For engineers reviewing the R5F2120AKFP#U0 datasheet, R5F2120AKFP#U0 pinout, R5F2120AKFP#U0 application, or R5F2120AKFP#U0 equivalent, this MCU supports industrial temperature operation (–40°C to +125°C), on-chip high-speed oscillator with frequency adjustment, and data retention via internal voltage detection and watchdog timer - critical for embedded control in harsh environments.
Technical Context
The R5F2120AKFP#U0 implements the R8C CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN, 3.0–5.5 V). Its memory map spans 1 Mbyte address space, with fixed interrupt vector table at 0FFDCh–0FFFFh and SFRs mapped to 00000h–002FFh.
Peripheral integration includes hardware LIN (using Timer RA and UART0), two independent UARTs (UART0 with clock sync I/O capability, UART1 for serial communication), and Timer RD supporting input capture/output compare on eight dedicated I/O pins - enabling precise timing for PWM generation or encoder interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with register bank switching and 20-bit PC for 1 Mbyte addressing |
| Flash Memory | 96 KB program ROM; supports 1,000 erase/write cycles; VCC = 2.7–5.5 V programming |
| RAM | 5 KB on-chip SRAM starting at 00400h; used for variables, stack, and subroutine calls |
| A/D Converter | 10-bit resolution, 12 analog inputs (AN0–AN11); reference voltage selectable via VREF pin |
| Timers | Timer RA/RB (8-bit × 2), Timer RD (16-bit × 2 with input capture/output compare), Timer RE (8-bit output) |
| Serial Interfaces | UART0 (LIN-capable), UART1, I²C bus interface (2-wire), clock-sync serial I/O with chip select (SSI/SCS/SSCK/SSO) |
| Supply & Temp | VCC = 3.0–5.5 V at f(XIN) = 16 MHz (K version); operating ambient: –40°C to +125°C |
Pinout & Package
Package: 48-pin plastic LQFP (PLQP0048KB-A), 0.5 mm pitch, 7 mm × 7 mm body. Pin 1 marked by notch or dot; thermal pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog Input / GPIO | 12-channel A/D inputs (AN0–AN7); configurable as CMOS I/O with software-selectable pull-up |
| P1_0–P1_3 | Key Input / Analog Input | KI0–KI3 interrupt inputs; also serve as AN8–AN11 for extended A/D coverage |
| P2_0–P2_7 | Timer RD I/O | TRDIOA0–TRDIOD1 and TRDCLK support 4-channel 16-bit timer operation with capture/compare |
| TXD0/RXD0 | UART0 Data | Full-duplex serial interface; TXD0 drives LIN bus when combined with Timer RA for hardware LIN protocol |
| SCL/SDA | I²C Bus Interface | Open-drain bidirectional lines compliant with standard-mode I²C (100 kbps); require external pull-ups |
| XIN/XOUT | Crystal Oscillator | Supports ceramic resonator or crystal (1–20 MHz); XIN accepts external clock if XOUT left open |
| RESET | Active-Low Reset | Asynchronous reset input; internal power-on reset circuit ensures reliable initialization at power-up |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/2.1 support using UART0 + Timer RA; eliminates external transceiver for basic node implementation |
| On-Chip Oscillators | High-speed (1–20 MHz adjustable) and low-speed on-chip oscillators; reduce BOM cost and board space vs. external crystals |
| Oscillation Stop Detection | Monitors XIN clock failure and triggers reset or interrupt; enables fail-safe response in automotive safety-critical functions |
| Voltage Detection Circuit | On-chip brown-out detection with programmable threshold; prevents erratic operation during supply dips without external supervisor |
| Emulator Debug Support | Dedicated debug area (20000h–23FFFh); allows real-time trace and breakpoint debugging without consuming user memory |
Applications
| Automotive Body Control | Industrial Sensor Node |
|---|---|
Use Scenario: Central body controller managing door locks, window lifts, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN slave firmware, sampling analog sensor signals (e.g., rain/light sensors), and driving discrete outputs via GPIO. Use Value: Hardware LIN reduces communication overhead; 12-channel A/D enables multi-sensor integration without external mux; K-version temp rating ensures reliability under hood conditions. |
Use Scenario: Standalone environmental monitoring unit measuring temperature, humidity, and vibration in factory machinery. IC Role / Device Role / Timing Role: Data acquisition engine performing periodic A/D conversions, filtering readings in RAM, and transmitting results over UART to gateway. Use Value: On-chip voltage detection prevents data corruption during line sags; 5 KB RAM accommodates filter buffers and protocol stacks; UART1 supports Modbus RTU framing. |
| Home Appliance Motor Control | Medical Diagnostic Equipment |
Use Scenario: Brushless DC motor driver in HVAC blower or washing machine drum actuator. IC Role / Device Role / Timing Role: Real-time PWM generator using Timer RD output compare; commutation logic synchronized to hall-effect sensor inputs on P1_0–P1_3. Use Value: 16-bit Timer RD provides sub-microsecond timing resolution for precise phase alignment; 41 GPIO pins allow direct connection to gate drivers and feedback circuits. |
Use Scenario: Front-end signal conditioning module in portable ultrasound or ECG device. IC Role / Device Role / Timing Role: Analog front-end controller digitizing biopotential signals via 10-bit A/D with programmable gain and offset calibration. Use Value: VREF pin enables ratiometric measurement against stable reference; internal RAM stores calibration coefficients; watchdog timer ensures deterministic recovery from transient faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2121AKFP#U0 | Includes 2 KB data flash (1 KB × 2 blocks); same 96 KB program ROM, 5 KB RAM, and peripherals | Required where field-upgradable configuration storage (e.g., calibration tables, device IDs) is needed | Select R5F2121AKFP#U0 only if data flash endurance (10,000 cycles) and nonvolatile parameter storage are essential |
| R5F21208KFP#U0 | 64 KB program ROM, 3 KB RAM; otherwise identical peripheral set and pinout | Suitable for simpler control tasks with smaller firmware footprint and lower memory cost target | Choose R5F21208KFP#U0 when application code size remains below 64 KB and BOM cost optimization is prioritized |
Compared with R5F2120AKFP#U0, R5F2121AKFP#U0 adds data flash for persistent settings but shares identical packaging and timing; R5F21208KFP#U0 reduces memory capacity while maintaining full peripheral compatibility - enabling scalable design across product tiers without PCB redesign.
Availability
R5F2120AKFP#U0 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance motor control, and medical diagnostic equipment requiring stable component supply across extended temperature ranges.
Supply support for R5F2120AKFP#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 devices.
The R8C/20 Group, including R5F2120AKFP#U0, was designed for cost-sensitive, high-reliability embedded control in automotive and industrial systems - emphasizing integrated peripherals, wide temperature operation, and robust debug infrastructure.
FAQ
What is the maximum operating frequency supported by the R5F2120AKFP#U0?
The R5F2120AKFP#U0 supports a maximum external crystal frequency of 20 MHz (J version) or 16 MHz (K version). At 16 MHz XIN, its minimum instruction execution time is 62.5 ns. The on-chip high-speed oscillator can be adjusted across 1–20 MHz range, enabling flexible clocking without external components.
Does the R5F2120AKFP#U0 include data flash memory?
No, the R5F2120AKFP#U0 belongs to the R8C/20 Group and contains only program flash memory (96 KB). Data flash (1 KB × 2 blocks) is exclusive to the R8C/21 Group, such as R5F2121AKFP#U0. This distinction is confirmed in Renesas' official documentation REJ03B0120-0200.
How many interrupt sources does the R5F2120AKFP#U0 support?
The R5F2120AKFP#U0 supports 20 total interrupt sources: 11 internal (e.g., timer overflow, A/D conversion complete), 5 external (INT0–INT3 plus one dedicated), and 4 software interrupts. Priority levels are configurable across 7 levels via the IPL bits in the FLG register.
Can the R5F2120AKFP#U0 operate in extended temperature environments?
Yes, the R5F2120AKFP#U0 is rated for –40°C to +125°C operation (K version), making it suitable for under-hood automotive applications and industrial environments. This rating is explicitly defined in Table 1.1 and Table 1.2 of the R8C/20 and R8C/21 Group datasheet.
What debug interfaces are supported by the R5F2120AKFP#U0?
The R5F2120AKFP#U0 supports on-chip debug via Renesas' E8 emulator interface. It reserves memory region 20000h–23FFFh for emulator use and provides dedicated debug pins (not exposed in standard 48-pin LQFP). No SWD or JTAG interface is implemented - debug access requires Renesas-compatible emulators and the dedicated debug connector.
R5F2120AKFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/20
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, Voltage Detect, WDT
- Number of I/O:
- 41
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 5K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2120AKFP#U0 FAQ
1.How can I place an order for R5F2120AKFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2120AKFP#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 R5F2120AKFP#U0 reliable?
The price and inventory of R5F2120AKFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2120AKFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F2120AKFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2120AKFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2120AKFP#U0?
R5F2120AKFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2120AKFP#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 R5F2120AKFP#U0?
For technical support, including R5F2120AKFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2120AKFP#U0 requirements.
6.How does Aetrix verify that R5F2120AKFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F2120AKFP#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 R5F2120AKFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F2120AKFP#U0?
All R5F2120AKFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2120AKFP#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 R5F2120AKFP#U0 part is unused and in its original packaging.
Return procedure for R5F2120AKFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F2120AKFP#U0 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
