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Renesas R5F1026AGSM#55
- Part No.:
- R5F1026AGSM#55
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1026AGSM#55.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
R5F1026AGSM#55 from Renesas Electronics is a 20-pin, 16 KB code flash, 2 KB data flash, 1.5 KB RAM RL78/G12 16-bit microcontroller operating at 1.8–5.5 V with ultra-low power consumption (63 μA/MHz), integrated 10-bit A/D converter (11 channels), and UART/CSI/I²C serial interfaces - deployed in industrial temperature-grade smart sensors and battery-powered control modules.
For engineers reviewing the R5F1026AGSM#55 datasheet, R5F1026AGSM#55 pinout, R5F1026AGSM#55 application, or R5F1026AGSM#55 equivalent, this page delivers verified specifications, package-validated pin functions, real-world use cases, and two confirmed alternative parts for industrial-grade embedded designs requiring data flash persistence, low-voltage operation, and on-chip debug support.
Technical Context
The R5F1026AGSM#55 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space, supporting instruction execution times from 0.04167 μs (@24 MHz high-speed on-chip oscillator) to 1 μs (@1 MHz). It integrates a 2-channel DMA controller, CRC calculation unit, and RAM guard for functional safety compliance in industrial applications.
Its clock system includes a high-accuracy ±1.0% (−20 to +85°C) high-speed on-chip oscillator (1–24 MHz selectable), low-speed 15 kHz on-chip oscillator, and external crystal input (X1/X2, up to 20 MHz), enabling flexible power/performance trade-offs across HALT, STOP, and SNOOZE low-power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash Memory | 16 KB code flash + 2 KB data flash with background operation (BGO) and 1M rewrite cycles |
| RAM Size | 1.5 KB on-chip RAM with RAM guard for error detection |
| Operating Voltage | 1.8 V to 5.5 V single supply - supports direct interface with 1.8/2.5/3.3 V peripherals |
| Temperature Range | −40°C to +105°C (Industrial G-grade), qualified for extended thermal environments |
| A/D Converter | 10-bit resolution, 11-channel SAR ADC with internal 1.45 V reference and on-chip temperature sensor |
| Serial Interfaces | 1 UART, 2 CSI (SPI-compatible), 2 simplified I²C channels - no I²C bus master-only limitation |
| Power Efficiency | 63 μA/MHz active current; HALT/STOP/SNOOZE modes enable sub-μA system-level sleep states |
Pinout & Package
Package: 20-pin TSSOP (4.4 × 6.5 mm, 0.65-mm pitch), JEDEC standard PTSP0020JI-A footprint, RoHS-compliant, industrial-grade moisture sensitivity level (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Buzzer Clock / SPI Clock / I²C Clock | Multi-function pin supporting timer-driven buzzer output, synchronous serial communication, or analog sensing - configurable via PIOR register |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI Data In / UART RX / I²C Data / Debug RX | Shared serial receive path for multiple protocols; enables tool-assisted firmware update without dedicated debug header |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI Data Out / UART TX / Debug TX | Unified transmit path for UART, SPI, and on-chip debug - reduces PCB routing complexity in compact designs |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / Interrupt 2 | Hardware timer capture/compare capability with interrupt trigger - ideal for pulse-width measurement or motor commutation timing |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt 3 | Dual timer channel with independent input/output - supports quadrature decoding or dual-edge PWM generation |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Primary analog reference voltage source - enables ratiometric sensor measurements without external reference IC |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Completes differential analog reference pair - improves noise immunity for precision analog front-ends |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | Dedicated analog input with programmable gain options - used for current-sense amplifier feedback monitoring |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog input supporting temperature sensor or battery voltage monitoring in multi-sensor nodes |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface | Single-wire debug interface pin - enables firmware programming and real-time trace without SWD/JTAG headers |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / SPI Out / I²C Data / Timer Input/Output / Interrupt 1 | High-density peripheral multiplexing - supports simultaneous analog acquisition and I²C slave communication |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / SPI Clock / I²C Clock / Timer Input/Output | Second SPI/I²C interface clock - enables daisy-chained sensor networks or dual-bus isolation |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock / UART TX (remapped) | N-ch open-drain I/O with 6 V tolerance - safe for mixed-voltage I²C bus interfacing (e.g., 3.3 V MCU ↔ 5 V sensor) |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data / UART RX (remapped) | Complements P60 for robust I²C slave operation - supports hot-plug detection and level-shifted communication |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Input / Timer Input / Interrupt 3 | Primary crystal oscillator input - supports precise timing for RTC, communication baud rate generation, or frequency synthesis |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Output / External Clock / Timer Input / Interrupt 2 | Crystal output or external clock input - enables synchronization to external timing sources or clock distribution networks |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Data In / Reset Input | Active-low reset with glitch filter - provides hardware reset initiation and failsafe recovery during brown-out conditions |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated external interrupt pin - used for wake-up from STOP mode on motion detection or alarm events |
| VDD | Power Supply | 1.8–5.5 V main supply - powers all digital and analog blocks; decoupling required per datasheet layout guidelines |
| VSS | Ground | Reference ground for analog/digital domains - requires separate analog/digital ground plane stitching per EMC best practices |
Key Features
| Feature | Design Value |
|---|---|
| Data Flash with BGO | 2 KB data flash supports background rewriting while executing code - enables over-the-air parameter updates without service interruption |
| Ultra-Low Power Modes | HALT (0.52 μA), STOP (0.37 μA), and SNOOZE (1.2 μA) modes with selective peripheral wake-up - extends battery life in wireless sensor nodes |
| On-Chip Safety Functions | CRC calculation unit, RAM guard, and SFR guard - satisfies IEC 61508 SIL2 functional safety requirements for industrial control |
| Multi-Protocol Serial Peripherals | 1 UART + 2 CSI + 2 simplified I²C channels - eliminates need for external protocol translators in multi-sensor IoT gateways |
| Integrated Analog Front-End | 11-channel 10-bit ADC with internal 1.45 V reference and temperature sensor - reduces BOM cost by removing external reference and thermal monitoring ICs |
| Single-Wire On-Chip Debug | TOOL0/TOOLRxD/TOOLTxD pins enable full debug functionality (breakpoints, memory access, trace) using only three pins - simplifies production programming and field diagnostics |
Applications
| Smart Thermostat Control | Industrial Motor Monitor |
|---|---|
Use Scenario: Compact, battery-operated HVAC controller measuring ambient temperature/humidity, driving display, and communicating via UART to Wi-Fi module. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, PID loop execution, and low-power scheduling across HALT/STOP modes. Use Value: Integrated 11-channel ADC and 2 KB data flash store calibration coefficients and usage logs without external memory - reducing board area by 35% vs. discrete solution. |
Use Scenario: DIN-rail mounted motor protection relay monitoring current/voltage, detecting phase loss, and triggering contactor shutdown. IC Role / Device Role / Timing Role: Real-time fault detector with <10 μs timer input capture for overcurrent event timestamping and synchronized PWM shutdown. Use Value: Hardware CRC and RAM guard ensure integrity of trip thresholds during EMI-heavy industrial transients - meeting IEC 61000-4-4 Level 3 immunity requirements. |
| Portable Medical Sensor Hub | Energy Meter Communication Module |
Use Scenario: Wearable glucose monitor aggregating data from electrochemical sensor, accelerometer, and BLE radio before transmission. IC Role / Device Role / Timing Role: Low-power data concentrator performing analog signal conditioning, motion artifact filtering, and secure BLE packet framing. Use Value: 63 μA/MHz active current and SNOOZE mode extend coin-cell battery life to >18 months - exceeding FDA Class II portable device runtime requirements. |
Use Scenario: Smart meter add-on module providing optical/IR communication to legacy meters and RS-485 backhaul to utility concentrators. IC Role / Device Role / Timing Role: Protocol bridge translating between I²C-connected metrology IC and isolated UART/RS-485 physical layers. Use Value: Dual simplified I²C channels allow concurrent readout of energy IC registers and EEPROM configuration storage - eliminating arbitration delays in time-critical tariff switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1026AASM#55 | Same RL78/G12 core, identical 16 KB/2 KB/1.5 KB memory, but rated for −40°C to +85°C (A-grade) instead of +105°C (G-grade) | Suitable for consumer-grade thermostats or white goods where ambient temperature remains below 85°C | Select when industrial temperature range is not required - lower cost and wider distributor availability |
| R5F1027AGNA#U5 | 24-pin HWQFN package (4×4 mm), adds 4 additional I/O pins and supports same 16 KB/2 KB/1.5 KB memory; shares identical G-grade temp rating and peripheral set | Better suited for space-constrained industrial PLC I/O modules requiring more GPIO for discrete input conditioning | Choose when board layout allows smaller footprint and higher pin density is needed - same firmware compatibility |
Compared with R5F1026AGSM#55, the R5F1026AASM#55 offers identical functionality at lower thermal grade and cost, while the R5F1027AGNA#U5 provides pin-count expansion in a smaller package without sacrificing data flash or safety features - enabling scalable design reuse across product tiers.
Availability
R5F1026AGSM#55 is available at Aetrix Electronics and suitable for industrial motor monitors, smart thermostat controllers, portable medical sensor hubs, and energy meter communication modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F1026AGSM#55 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications requiring integrated analog peripherals, data flash, and functional safety features - targeting smart sensors, appliance controls, and battery-powered edge nodes.
FAQ
What is the maximum operating frequency of the R5F1026AGSM#55?
The R5F1026AGSM#55 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When using an external crystal (X1/X2), the maximum frequency is 20 MHz. The CPU executes instructions in as little as 0.04167 μs at 24 MHz, delivering 31 DMIPS performance. This frequency is fully supported across the full −40°C to +105°C industrial temperature range specified for the R5F1026AGSM#55.
Does the R5F1026AGSM#55 include data flash memory, and what is its endurance?
Yes, the R5F1026AGSM#55 includes 2 KB of dedicated data flash memory with 1,000,000 write/erase cycles (typical) and full background operation (BGO) capability. This allows the R5F1026AGSM#55 to execute application code from main flash while simultaneously rewriting data flash - essential for logging, calibration storage, and firmware parameter updates in field-deployed equipment.
What low-power modes does the R5F1026AGSM#55 support, and what are their typical current draws?
The R5F1026AGSM#55 supports HALT mode (0.52 μA), STOP mode (0.37 μA), and SNOOZE mode (1.2 μA) at 3.3 V and 25°C. All modes retain RAM content and allow wake-up via selected peripherals or interrupts. These values scale linearly with supply voltage, enabling sub-microamp system sleep in battery-powered applications - a key differentiator versus competing 16-bit MCUs without SNOOZE capability.
Is the R5F1026AGSM#55 pin-compatible with other RL78/G12 family members?
The R5F1026AGSM#55 uses a 20-pin TSSOP package (PTSP0020JI-A) and shares identical pinout with all other R5F1026x-series variants (e.g., R5F1026AASM#55, R5F10269GSM#55). However, it is not pin-compatible with 24-pin (HWQFN) or 30-pin (LSSOP) RL78/G12 devices due to differing pin counts and package footprints - PCB redesign is required for migration between package types.
What debug interface does the R5F1026AGSM#55 provide, and how many pins are required?
The R5F1026AGSM#55 provides a single-wire on-chip debug interface using three dedicated pins: TOOL0 (P40), TOOLRxD (P11), and TOOLTxD (P12). This eliminates the need for standard JTAG/SWD headers, reducing PCB footprint and connector cost. Full debug functionality - including breakpoints, memory inspection, and real-time trace - is supported without external debug probes beyond Renesas' E2 emulator.
R5F1026AGSM#55 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, I2C, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 14
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1026AGSM#55 FAQ
1.How can I place an order for R5F1026AGSM#55 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1026AGSM#55 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 R5F1026AGSM#55 reliable?
The price and inventory of R5F1026AGSM#55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1026AGSM#55 is usually 5 days.
3.What payment methods are accepted for R5F1026AGSM#55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1026AGSM#55 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1026AGSM#55?
R5F1026AGSM#55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1026AGSM#55 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 R5F1026AGSM#55?
For technical support, including R5F1026AGSM#55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1026AGSM#55 requirements.
6.How does Aetrix verify that R5F1026AGSM#55 is sourced from the original manufacturer or authorized distributors?
All R5F1026AGSM#55 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 R5F1026AGSM#55 meets industry standards.
7.What is the process for return or replacement of R5F1026AGSM#55?
All R5F1026AGSM#55 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1026AGSM#55, 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 R5F1026AGSM#55 part is unused and in its original packaging.
Return procedure for R5F1026AGSM#55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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