My Inquiry
My Account
Renesas R5F10267ASM#35
- Part No.:
- R5F10267ASM#35
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10267ASM#35.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,900
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F10267ASM#35 from Renesas Electronics is a 20-pin RL78/G12 16-bit microcontroller with 4 KB code flash, 2 KB data flash, and 256 B RAM, operating at 1.8–5.5 V and delivering 31 DMIPS at 24 MHz. It integrates an ultra-low-power CPU core (63 μA/MHz), 10-bit 11-channel ADC, UART/CSI/I²C serial interfaces, 4-channel 16-bit TAU timer, and on-chip debug - deployed in battery-powered sensor nodes and industrial control panels.
For engineers reviewing the R5F10267ASM#35 datasheet, R5F10267ASM#35 pinout, R5F10267ASM#35 application, or R5F10267ASM#35 equivalent, key selection criteria include its 2 KB data flash with background operation (BGO), ±1.0% high-speed on-chip oscillator accuracy over –20 to +85°C, and support for STOP/HALT/SNOOZE low-power modes in compact TSSOP20 packaging.
Technical Context
The R5F10267ASM#35 implements the RL78 CISC CPU core with 3-stage pipeline and 1 MB address space, executing instructions in as little as 0.04167 µs at 24 MHz using the high-speed on-chip oscillator. Its peripheral set includes two CSI channels, two simplified I²C channels, one UART channel, and CRC hardware - all enabled only in R5F102-series variants per datasheet Section 1.3.3.
It features dual-voltage tolerance I/O (6 V on P60/P61), programmable key interrupt (KR0–KR5), and analog inputs with internal 1.45 V reference and temperature sensor. The device supports self-programming via flash shield window and uses dedicated low-speed on-chip oscillator (15 kHz) for watchdog timer operation independent of main clock domain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space, 8×8-bit register banks ×4 |
| Flash Memory | 4 KB code flash (1 KB block size) + 2 KB data flash with BGO and 1M rewrite cycles (TYP) |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3 V logic without level shifters |
| Power Consumption | 63 μA/MHz active current; HALT/STOP/SNOOZE modes reduce leakage for battery life extension |
| ADC | 10-bit resolution, 11 input channels, internal 1.45 V reference, integrated temperature sensor |
| Oscillator Accuracy | ±1.0% over TA = –20 to +85°C (high-speed on-chip oscillator); ±1.5% at –40 to –20°C |
| Package & Pins | TSSOP20 (4.4 × 6.5 mm, 0.65 mm pitch), 18 I/O pins including 2×6 V-tolerant N-ch open-drain outputs |
Pinout & Package
TSSOP20 package (PTSP0020JI-A), 4.4 × 6.5 mm body, 0.65 mm lead pitch, exposed pad not present. Pin functions validated per datasheet Figure 1-1 and Table 1-1 for R5F10267x series.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock Output / SPI Clock / I²C Clock | Multi-function pin supporting timer-driven buzzer output, synchronous serial communication, or analog sensing |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI Input / UART Receive / I²C Data / Debug RX | Shared serial receive path for UART, I²C, and SPI - selectable via PIOR register; also serves debug interface |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI Output / UART Transmit / Debug TX | Unified transmit path for UART and SPI; enables firmware updates and tool communication without extra GPIO |
| 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 - used for pulse-width measurement or PWM generation |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt 3 | Dedicated timer channel for edge-triggered event counting or complementary PWM output with P13 |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Primary analog reference voltage input - must be decoupled; sets full-scale range for all 10-bit ADC conversions |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Differential reference input enabling ratiometric measurements and noise rejection in precision sensor front-ends |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | General-purpose analog input with internal 1.45 V reference option - suitable for thermistor or voltage monitoring |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog channel sharing same reference structure - allows multi-sensor acquisition within single conversion cycle |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface | Configurable as keypad scan input or debug I/O - supports low-power wake-up from STOP mode on key press |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / SPI Output / I²C Data / Timer Input/Output / Interrupt 1 | High-flexibility pin combining analog, serial, and timing functions - enables compact design in space-constrained modules |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / SPI Clock / I²C Clock / Timer Input/Output | Second CSI/I²C interface clock line with timer capture capability - supports dual-sensor I²C bus or synchronized sampling |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock A / UART Transmit (remapped) | I²C master clock output with 6 V tolerance - drives mixed-voltage I²C slaves (e.g., 5 V sensors) without external level shifter |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data A / UART Receive (remapped) | I²C bidirectional data line with 6 V tolerance - enables robust communication with legacy industrial peripherals |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Input / Timer Input / Interrupt | Primary crystal oscillator input - supports 1–20 MHz resonators; doubles as timer input for external event counting |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Output / External Clock / Timer Input / Interrupt | Crystal oscillator output or external clock input - enables precise timing synchronization with system clocks or RTC modules |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Input / Reset Input | Active-low reset pin with internal pull-up; also serves as SPI data input - simplifies board layout by sharing function |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated external interrupt pin with configurable edge sensitivity - used for emergency shutdown or motion detection |
| VDD | Power Supply | Single 1.8–5.5 V supply rail - powers core, peripherals, and I/O; requires local 100 nF ceramic decoupling |
| VSS | Ground | Digital ground reference - must be connected to PCB ground plane with low-inductance path for ADC stability |
Key Features
| Feature | Design Value |
|---|---|
| True low-power platform | 63 μA/MHz active current + STOP mode down to 0.51 μA - extends coin-cell battery life to >5 years in periodic-sense applications |
| Data flash with BGO | 2 KB data flash supports background rewriting while executing code - enables seamless firmware parameter updates without halting operation |
| On-chip security functions | CRC calculation unit, RAM guard, SFR guard, and flash block erase/write prohibition - protects firmware integrity in untrusted environments |
| Multi-voltage I/O tolerance | P60/P61 withstand 6 V - directly interfaces with 5 V sensors, actuators, or legacy I²C devices without external level translators |
| Integrated analog subsystem | 10-bit 11-channel ADC with internal 1.45 V reference and temperature sensor - eliminates external references for environmental monitoring |
| Peripheral I/O redirection | PIOR register enables dynamic remapping of UART, CSI, and I²C functions to alternate pins - increases PCB routing flexibility and reuse |
Applications
| Smart Home Sensor Hub | Industrial Motor Controller |
|---|---|
|
Use Scenario: Compact wireless node aggregating temperature, humidity, and occupancy data from multiple analog and digital sensors. IC Role / Device Role / Timing Role: Central MCU managing sensor polling, ADC conversion, I²C/SPI peripheral control, and BLE/Wi-Fi co-processor handshaking. Use Value: Integrated 11-channel ADC and 2 KB data flash enable local calibration storage and sensor fusion without external memory - reducing BOM cost and footprint. |
Use Scenario: Closed-loop speed and position control for 24 V DC brushless motors in factory automation equipment. IC Role / Device Role / Timing Role: Real-time controller executing PID algorithms, generating PWM gate drive signals, and monitoring current/voltage feedback via ADC. Use Value: 4-channel 16-bit TAU timer with complementary PWM outputs and 10-bit ADC sampling at 1 MS/s provide deterministic motor control timing and fast fault response. |
| Portable Medical Monitor | Energy Metering Module |
|
Use Scenario: Battery-powered wearable device measuring ECG, skin temperature, and SpO₂ with clinical-grade accuracy. IC Role / Device Role / Timing Role: Low-power signal acquisition MCU performing analog front-end conditioning, oversampled ADC conversion, and secure data logging. Use Value: 63 μA/MHz operation and SNOOZE mode allow continuous sensor sampling at <10 μA average current - achieving >14-day runtime on CR2032. |
Use Scenario: DIN-rail mounted electricity meter reading voltage, current, and power factor across three phases using shunt and CT sensors. IC Role / Device Role / Timing Role: Metrology processor handling isolated ADC interfacing, RMS calculation, harmonic analysis, and tamper detection logic. Use Value: On-chip CRC and RAM/SFR guards ensure firmware integrity against electromagnetic interference in noisy industrial substations - meeting IEC 62053 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10268ASM#35 | 8 KB code flash, 512 B RAM, same 2 KB data flash and peripherals | Supports larger firmware images (e.g., OTA stack + encryption libraries) without external memory | Select when application requires >4 KB program space but retains identical low-power profile and pin compatibility |
| R5F10367ASM#35 | No data flash; DMA controller omitted; ±5.0% oscillator accuracy; simplified I²C removed | Lacks background data logging and high-accuracy timing - suited for cost-sensitive, non-data-logging control tasks | Choose for basic I/O control where data persistence and tight timing tolerances are unnecessary - lower unit cost |
Compared with R5F10267ASM#35, R5F10268ASM#35 offers scalable code density while maintaining identical low-power behavior and peripheral set, whereas R5F10367ASM#35 trades data flash, oscillator precision, and interface richness for reduced bill-of-materials cost in simpler applications.
Availability
R5F10267ASM#35 is available at Aetrix Electronics and suitable for smart home sensor hubs, portable medical monitors, and industrial motor controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for R5F10267ASM#35 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications - balancing performance, integration, and energy efficiency in compact packages.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F10267ASM#35?
The R5F10267ASM#35 operates at up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS at that frequency. This performance level is achieved with the RL78 CPU core's 3-stage pipeline and is specified under VDD = 2.7–5.5 V conditions per the R01DS0193EJ0250 datasheet revision 2.50.
Does the R5F10267ASM#35 support background data flash rewriting while executing application code?
Yes, the R5F10267ASM#35 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the MCU to execute instructions from program memory while simultaneously erasing or writing to data flash - essential for real-time parameter updates without service interruption.
What are the absolute maximum ratings for analog input pins on the R5F10267ASM#35?
For the R5F10267ASM#35, analog input pins (ANI0–ANI3, ANI16–ANI22) have an absolute maximum rating of –0.3 V to VDD + 0.3 V, and must not exceed AVREF(+) + 0.3 V during A/D conversion. Exceeding these limits risks latch-up or permanent damage to the analog front-end circuitry.
Which oscillator options are available for the R5F10267ASM#35, and what is the accuracy of the high-speed on-chip oscillator?
The R5F10267ASM#35 supports both external crystal/ceramic (X1/X2, 1–20 MHz) and high-speed on-chip oscillator (1–24 MHz). The on-chip oscillator achieves ±1.0% accuracy over TA = –20 to +85°C and ±1.5% over –40 to –20°C - verified in datasheet Section 2.2.2.
Is the R5F10267ASM#35 pin-compatible with other RL78/G12 20-pin variants such as R5F10268ASM#35 or R5F10367ASM#35?
Yes, the R5F10267ASM#35 shares identical TSSOP20 pinout and mechanical footprint with all RL78/G12 20-pin variants including R5F10268ASM#35 and R5F10367ASM#35. However, functional differences exist - notably data flash presence, oscillator accuracy, and peripheral count - requiring firmware validation after substitution.
R5F10267ASM#35 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10267ASM#35 FAQ
1.How can I place an order for R5F10267ASM#35 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10267ASM#35 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 R5F10267ASM#35 reliable?
The price and inventory of R5F10267ASM#35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10267ASM#35 is usually 5 days.
3.What payment methods are accepted for R5F10267ASM#35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10267ASM#35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10267ASM#35?
R5F10267ASM#35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10267ASM#35 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 R5F10267ASM#35?
For technical support, including R5F10267ASM#35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10267ASM#35 requirements.
6.How does Aetrix verify that R5F10267ASM#35 is sourced from the original manufacturer or authorized distributors?
All R5F10267ASM#35 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 R5F10267ASM#35 meets industry standards.
7.What is the process for return or replacement of R5F10267ASM#35?
All R5F10267ASM#35 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10267ASM#35, 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 R5F10267ASM#35 part is unused and in its original packaging.
Return procedure for R5F10267ASM#35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10267ASM#35 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…
