My Inquiry
My Account
Renesas R5F104MJAFB#X0
- Part No.:
- R5F104MJAFB#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F104MJAFB#X0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,371
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F104MJAFB#X0 from Renesas is a 80-pin LFQFP (0.5 mm pitch), industrial-grade RL78/G14 16-bit MCU with 192 KB flash, 20 KB RAM, and 8 KB data flash, operating from 1.6–5.5 V at -40 to +105°C (G-grade). It delivers 44 DMIPS at 32 MHz, features ultra-low-power operation (66 μA/MHz active, 0.60 μA RTC+LVD mode), and integrates UART, I²C, SPI, 12-bit ADC (20 ch), RTC, and hardware DTC/ELC for sensor and control applications in smart meters and industrial HMI.
For engineers reviewing the R5F104MJAFB#X0 datasheet, R5F104MJAFB#X0 pinout, R5F104MJAFB#X0 application, or R5F104MJAFB#X0 equivalent, key selection criteria include its G-grade temperature rating, 80-pin LFQFP-0.5 mm package, 192 KB code flash with self-programming, integrated RTC with calendar/alarm, and support for background data flash rewriting (1M cycles) - all critical for long-lifecycle industrial firmware updates and battery-backed timing systems.
Technical Context
The R5F104MJAFB#X0 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed oscillator) to 30.5 μs (32.768 kHz subsystem clock). Its power management includes HALT, STOP, and SNOOZE modes, plus on-chip LVD with 14 selectable voltage thresholds and POR circuitry.
Peripheral integration includes an Event Link Controller (ELC) enabling direct hardware-triggered peripheral activation (19–26 event types), Data Transfer Controller (DTC) supporting block/repeat/normal transfers with chain functionality, and dual serial interfaces: up to 4 UART/LIN channels and 10 I²C/simplified I²C channels - enabling concurrent communication with sensors, displays, and host controllers without CPU overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response and low-energy per instruction. |
| Max Operating Frequency | 32 MHz (44 DMIPS); sufficient for motor control loops, multi-sensor polling, and LIN bus stack execution. |
| Flash Memory | 192 KB code flash + 8 KB data flash; supports boot swap, flash shield window, and BGO for seamless firmware updates. |
| RAM Size | 20 KB on-chip RAM; accommodates real-time task stacks, communication buffers, and calibration data tables. |
| ADC Resolution & Channels | 10-bit ADC with 20 input channels and internal 1.45 V reference; enables simultaneous monitoring of voltage, current, temperature, and analog sensors. |
| Operating Temperature | -40 to +105°C (G-grade); qualified for under-hood automotive modules, factory-floor PLCs, and outdoor utility equipment. |
| Low-Power Modes | 0.60 μA RTC+LVD mode; allows decade-scale battery operation in metering and remote monitoring nodes. |
Pinout & Package
Package: 80-pin LFQFP, 12 × 12 mm, 0.5 mm pitch (Renesas code PLQP0080KE-A). Exposed pad recommended for thermal and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P121 / X1 | Crystal input | Connects to 32.768 kHz crystal for RTC accuracy; requires external load capacitors. |
| P122 / X2 / EXCLK | Crystal output / external clock input | Drives 32.768 kHz crystal; alternatively accepts external clock source for synchronous timing. |
| P137 / INTP0 | Interrupt input 0 | Dedicated wake-up/interrupt pin with configurable sensitivity; used for emergency stop or tamper detection. |
| P40 / TOOL0 | On-chip debug interface | Enables Flash programming and real-time debugging via Renesas E2 emulator without additional headers. |
| REGC | Regulator bypass capacitor | Must connect 0.47–1 μF capacitor to VSS; stabilizes internal voltage regulator for noise immunity. |
| VDD / VSS | Power supply / ground | Single 1.6–5.5 V supply; supports direct connection to Li-ion, 3.3 V, or 5 V rails without external regulators. |
Key Features
| Feature | Design Value |
|---|---|
| Self-programmable flash with boot swap | Enables field firmware updates with zero downtime and rollback capability - critical for certified industrial devices. |
| Background operation (BGO) for data flash | Allows CPU to execute code from main flash while rewriting data flash (e.g., logging or calibration storage) without interruption. |
| Hardware Event Link Controller (ELC) | Eliminates software interrupt latency by routing 19–26 peripheral events directly to target functions (e.g., trigger ADC conversion on timer match). |
| Integrated RTC with calendar & alarm | Provides 99-year calendar, programmable alarms, and clock correction - removes need for external RTC IC in time-stamped data loggers. |
| Ultra-low-power STOP mode (0.60 μA) | Preserves RTC and LVD functionality during extended sleep; extends battery life in wireless sensor nodes beyond 10 years. |
Applications
| Smart Energy Metering | Industrial HMI Panel |
|---|---|
Use Scenario: Residential/commercial electricity meter with tariff switching, tamper detection, and daily consumption logging. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing LCD display, communicating via RS-485/M-Bus, and maintaining accurate time stamping. Use Value: Integrated 10-bit ADC (20 ch), RTC with calendar, and 8 KB data flash enable secure, timestamped energy logging without external components. | Use Scenario: Local operator interface for PLC-controlled packaging line with touch buttons, LED indicators, and status display. IC Role / Device Role / Timing Role: Dedicated UI processor handling button debouncing, LED PWM dimming, serial display updates, and fault alarm signaling. Use Value: PCLBUZ outputs drive buzzers; multiple UART/I²C channels interface with display and PLC; SNOOZE mode reduces idle power during standby. |
| Automotive Body Control | Wireless Sensor Node |
Use Scenario: Under-hood module managing cooling fan speed, cabin lighting sequencing, and LIN-connected door locks. IC Role / Device Role / Timing Role: LIN transceiver host MCU with PWM fan control, GPIO-driven relays, and diagnostic reporting over LIN bus. Use Value: LIN-capable UART channels, -40 to +105°C rating, and robust LVD/POR ensure reliable operation in harsh thermal environments. | Use Scenario: Battery-powered environmental monitor (temp/humidity/pressure) transmitting data via BLE or sub-GHz RF every 5 minutes. IC Role / Device Role / Timing Role: Sensor aggregator and low-power scheduler - wakes on RTC alarm, reads sensors, processes data, transmits, then returns to STOP mode. Use Value: 0.60 μA STOP mode + RTC + 10-bit ADC minimizes average current draw to <10 μA, enabling >10-year CR2032 battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104MLAFB#X0 | Same 80-pin LFQFP-0.5 mm package, but 384 KB flash and 32 KB RAM; identical peripheral set and G-grade temp range. | Preferred where larger firmware image size or expanded data buffering is required (e.g., OTA update staging area or multi-language UI). | Select when future firmware growth or enhanced data logging capacity is anticipated; pin-compatible with no PCB change. |
| R5F104MHAFB#X0 | Same package and G-grade rating, but 128 KB flash and 16 KB RAM; otherwise identical clock, ADC, and peripheral configuration. | Suitable for cost-optimized designs with smaller firmware footprint and reduced RAM needs (e.g., basic relay controllers or simple sensor hubs). | Choose for lower BOM cost where 128 KB flash suffices; shares same layout and debug interface. |
Compared with R5F104MLAFB#X0 and R5F104MHAFB#X0, the R5F104MJAFB#X0 provides optimal balance of memory resources (192 KB/20 KB) for mid-complexity industrial applications - avoiding over-provisioning while ensuring headroom for safety-critical firmware partitions and runtime data structures.
Availability
R5F104MJAFB#X0 is available at Aetrix Electronics and suitable for smart metering, industrial HMI, and automotive body control applications requiring stable component supply, long-term lifecycle assurance, and G-grade reliability.
Supply support for R5F104MJAFB#X0 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.
The RL78/G14 product line targets cost-sensitive, ultra-low-power general-purpose applications - delivering high integration, robustness, and toolchain maturity for rapid development of certified industrial and consumer devices.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F104MJAFB#X0?
The R5F104MJAFB#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 44 DMIPS of processing performance. This frequency is fully supported across its entire operating voltage range (1.6–5.5 V) and industrial temperature range (-40 to +105°C), enabling deterministic real-time control in motor drives and communication stacks without external clock sources.
Does the R5F104MJAFB#X0 support in-system programming and secure firmware updates?
Yes, the R5F104MJAFB#X0 supports full in-system programming via its on-chip debug interface (TOOL0 pin) and includes boot swap functionality, flash shield window, and block erase prohibition. These features allow authenticated, atomic firmware updates with rollback capability - essential for maintaining functional safety compliance in industrial deployments of the R5F104MJAFB#X0.
How many analog input channels does the R5F104MJAFB#X0 ADC support, and what reference options are available?
The R5F104MJAFB#X0 integrates a 10-bit successive-approximation ADC with 20 configurable analog input channels. It supports both external reference voltages and an internal 1.45 V reference, enabling precise measurements across varying supply conditions - a key capability for accurate sensor interfacing in battery-operated or wide-input-voltage industrial systems using the R5F104MJAFB#X0.
What low-power modes are available on the R5F104MJAFB#X0, and what is the lowest achievable current consumption?
The R5F104MJAFB#X0 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it achieves 0.60 μA typical current consumption at 3.0 V and 25°C. This ultra-low quiescent current enables decade-scale operation in battery-backed applications such as utility meters and remote environmental monitors built around the R5F104MJAFB#X0.
Is the R5F104MJAFB#X0 pin-compatible with other RL78/G14 variants in the same package?
Yes, all RL78/G14 MCUs in the 80-pin LFQFP-0.5 mm package - including R5F104MHAFB#X0, R5F104MJAFB#X0, and R5F104MLAFB#X0 - share identical pinouts and electrical characteristics. This enables scalable memory selection (128/192/384 KB flash) without PCB redesign, simplifying platform development and inventory management for projects based on the R5F104MJAFB#X0.
R5F104MJAFB#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- RL78/G14
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 64
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 17x8/10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104MJAFB#X0 FAQ
1.How can I place an order for R5F104MJAFB#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104MJAFB#X0 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 R5F104MJAFB#X0 reliable?
The price and inventory of R5F104MJAFB#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104MJAFB#X0 is usually 5 days.
3.What payment methods are accepted for R5F104MJAFB#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104MJAFB#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104MJAFB#X0?
R5F104MJAFB#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104MJAFB#X0 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 R5F104MJAFB#X0?
For technical support, including R5F104MJAFB#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104MJAFB#X0 requirements.
6.How does Aetrix verify that R5F104MJAFB#X0 is sourced from the original manufacturer or authorized distributors?
All R5F104MJAFB#X0 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 R5F104MJAFB#X0 meets industry standards.
7.What is the process for return or replacement of R5F104MJAFB#X0?
All R5F104MJAFB#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104MJAFB#X0, 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 R5F104MJAFB#X0 part is unused and in its original packaging.
Return procedure for R5F104MJAFB#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F104MJAFB#X0 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…
