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Renesas R5F1051AASP#70
- Part No.:
- R5F1051AASP#70
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 10-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1051AASP#70.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G11 16K
- Quantity:
- Payment:
- Shipping:
Inventory:1,650
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Product details
Overview
R5F1051AASP#70 from Renesas Electronics is a 10-pin, ultra-low-power 16-bit RL78/G11 microcontroller featuring 16 KB code flash, 2 KB data flash, and 1.5 KB RAM. It operates from 1.6 V to 5.5 V, delivers 33 DMIPS at 24 MHz, and achieves 58.3 μA/MHz active current and 0.64 μA in LVD-only operation-ideal for battery-powered consumer sensors and smart home peripherals.
For engineers reviewing the R5F1051AASP#70 datasheet, R5F1051AASP#70 pinout, R5F1051AASP#70 application, or R5F1051AASP#70 equivalent, this page provides verified technical context, validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and packaging differences for rapid selection in cost-optimized, space-constrained embedded designs.
Technical Context
The R5F1051AASP#70 integrates an RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction execution time (0.04167 μs @ 24 MHz to 66.6 μs @ 15 kHz). It supports multiply/divide/MAC instructions and features a 1 Mbyte address space with four banks of 8-bit general-purpose registers.
Its clock system includes high-speed (up to 24 MHz), middle-speed (4 MHz), and low-speed (15 kHz) on-chip oscillators, plus external crystal support (1–20 MHz). Power management includes HALT, STOP, and SNOOZE modes, POR, and a 14-level voltage detector (LVD) with interrupt/reset options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 Mbyte address space |
| Flash Memory | 16 KB code flash (1 KB block size) + 2 KB data flash with background operation (BGO) |
| RAM | 1.5 KB on-chip RAM; flash library uses RAM starting at address FF900H |
| Power Consumption | 58.3 μA/MHz active current; 0.64 μA in LVD-only operation enables multi-year battery life |
| A/D Converter | 10-bit resolution, 3-channel analog input (ANI0–ANI2), internal reference (1.45 V), and temperature sensor |
| Timers & Peripherals | 4-channel 16-bit TAU timer, 1-channel watchdog, 1-channel 12-bit interval timer, 2-channel 8-bit interval timer |
| I/O & Interfaces | 7 total I/O pins (4 CMOS I/O, 3 CMOS input); 1 CSI channel, 1 UART channel, 2 comparator channels, 1 PGA |
Pinout & Package
Package: 10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65-mm pitch), RoHS-compliant, consumer-grade (TA = −40 to +85°C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| P20/ANI0/AVREFP/IVREF1/TKBO1 | Analog input / A/D reference (+) / comparator reference / TMKB output | Primary analog input channel 0; selectable as AVREFP for A/D reference or IVREF1 for comparator; supports key scan output |
| P21/ANI1/AVREFM/IVREF0 | Analog input / A/D reference (−) / comparator reference | Analog input channel 1; dual-role as AVREFM (A/D negative reference) and IVREF0 (comparator reference) |
| P22/ANI2/PGAI/IVCMP0/SO10/TxD1 | Analog input / PGA input / comparator input / serial output / UART transmit | Third analog input; feeds PGA and comparator 0; shares SO10 (CSI) and TxD1 (UART1) functions |
| P40/TOOL0/TO03/PCLBUZ0/SCK10/VCOUT0/INTFO/TKBO0 | Tool interface / timer output / clock output / serial clock / comparator output / interrupt flag / TMKB output | Multi-function pin supporting debug (TOOL0), buzzer clock (PCLBUZ0), CSI clock (SCK10), and comparator output VCOUT0 |
| P137/INTP10/TI03/SI10/RxD1 | External interrupt / timer input / serial input / UART receive | Interrupt-capable input supporting TI03 (timer), SI10 (CSI), and RxD1 (UART1 receive) - critical for event-driven wake-up |
| P125/RESET/INTP9 | Reset input / external interrupt | Active-low hardware reset with integrated pull-up; doubles as INTP9 for external interrupt triggering |
| P122/EXCLK/TI02/INTP1 | External clock input / timer input / external interrupt | Accepts external main system clock (EXCLK) up to 20 MHz; also serves as TI02 and INTP1 for flexible timing/interrupt routing |
| REGC | Regulator capacitance | Must connect to VSS via 0.47–1 μF capacitor to stabilize internal regulator; not a signal pin |
| VSS | Ground | Primary ground reference for digital and analog domains; required for REGC capacitor connection |
| VDD | Power supply | Single 1.6–5.5 V supply powering all logic, analog, and peripheral blocks; no separate EVDD (not present in 10-pin variant) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power modes | Halt (0.23 μA), Stop (0.42 μA), and SNOOZE mode enable sub-μA sleep while retaining RAM and selected peripheral state |
| Self-programming flash | Supports boot swap and flash shield window functions for secure firmware updates without external programmer |
| On-chip debug | Integrated debug interface enables full-cycle development without external JTAG emulator; disable before mass production |
| Comparator with window mode | Two comparators (IVCMP0/IVCMP1) support high-speed/low-speed modes and window detection for threshold monitoring |
| Programmable clock/buzzer | PCLBUZ0 generates precise frequencies (2.44 kHz–10 MHz) directly from system clock or 15-kHz subsystem clock |
Applications
| Smart Sensor Node | Home Appliance Control |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART to gateway. IC Role / Device Role / Timing Role: Primary MCU managing ADC sampling, LVD monitoring, UART communication, and ultra-low-power sleep scheduling. Use Value: 0.64 μA LVD-only operation extends coin-cell battery life beyond 5 years; 10-bit ADC with internal 1.45 V reference eliminates external precision references. |
Use Scenario: Fan speed control and status reporting in compact air purifier with buzzer feedback. IC Role / Device Role / Timing Role: System controller handling PWM fan drive (via TO03), buzzer output (PCLBUZ0), and key interrupt (INTP9/INTP10) for button inputs. Use Value: Integrated PCLBUZ0 eliminates external oscillator; 10-pin LSSOP fits tight PCB footprints; 1.6 V minimum operation supports wide-input buck-boost regulators. |
| Industrial Remote Monitor | Low-Cost IoT Edge Device |
Use Scenario: DIN-rail mounted environmental monitor logging data to local flash and alerting via UART. IC Role / Device Role / Timing Role: Data acquisition engine using 3-channel ADC, 2 KB data flash BGO writes, and watchdog supervision. Use Value: Background data flash rewriting allows continuous logging during active operation; 14-level LVD ensures reliable brown-out detection across varying supply conditions. |
Use Scenario: BLE-connected smoke detector requiring fast wake-on-interrupt and minimal BOM count. IC Role / Device Role / Timing Role: Standby supervisor activating only on INTP9 (smoke alarm trigger) or TI02 (external sensor pulse), then executing ADC and UART burst. Use Value: 33 DMIPS at 24 MHz enables rapid sensor processing before returning to 0.42 μA STOP mode; single-VDD simplifies power design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1054AASP#70 | 16-pin SSOP package; adds 4 more I/O pins, 5-channel ADC, 2 UARTs, 2 CSI channels, and key interrupt (KR0–KR2) | Required when >7 I/O or dual UART/CSI interfaces needed; same 16 KB flash/1.5 KB RAM/2 KB data flash | Select for expanded peripheral count without changing core architecture or toolchain |
| R5F1051AGSP#70 | Identical 10-pin LSSOP package and pinout; industrial-grade (-40 to +105°C) with enhanced LVD accuracy and extended voltage detector range | Suitable for automotive cabin modules or industrial controls requiring higher ambient temperature tolerance | Choose when operating above +85°C ambient or needing tighter LVD tolerance (±0.06V vs ±0.04V) |
Compared with R5F1051AASP#70, R5F1054AASP#70 offers scalable I/O and interfaces for mid-complexity systems, while R5F1051AGSP#70 maintains identical footprint and functionality but guarantees performance over a wider temperature range-enabling reuse of PCB layout with only qualification-level validation.
Availability
R5F1051AASP#70 is available at Aetrix Electronics and suitable for smart sensor nodes, home appliance controllers, and industrial remote monitors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F1051AASP#70 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, and power solutions for automotive, industrial, and IoT markets.
The RL78/G11 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated consumer and industrial applications-balancing performance, integration, and energy efficiency in compact packages.
FAQ
What is the maximum operating frequency and corresponding instruction execution time for R5F1051AASP#70?
The R5F1051AASP#70 supports a maximum high-speed on-chip oscillator frequency of 24 MHz, yielding a minimum instruction execution time of 0.04167 μs. When using the external crystal oscillator, it operates up to 20 MHz with a 0.05 μs execution time. These values are confirmed in the electrical specifications section of the R01DS0282EJ0260 datasheet under AC characteristics.
Does R5F1051AASP#70 support in-system programming and secure firmware updates?
Yes, R5F1051AASP#70 supports self-programming with boot swap functionality and flash shield window protection. This enables field firmware updates without external programmers and prevents unauthorized access to protected memory regions. The flash library uses RAM starting at address FF900H, and rewrite endurance is rated at 1,000,000 cycles for data flash.
How many analog input channels does R5F1051AASP#70 provide, and what reference options are available?
R5F1051AASP#70 provides three external analog input channels (ANI0–ANI2) and one internal temperature sensor. Reference options include external AVREFP/AVREFM pins and an internal 1.45 V reference voltage. The A/D converter supports 8- or 10-bit resolution depending on configuration, with VDD = 1.6–5.5 V operation.
What power-saving modes are available on R5F1051AASP#70, and what is the lowest achievable current draw?
R5F1051AASP#70 offers HALT, STOP, and SNOOZE modes. In STOP mode with only the low-voltage detector (LVD) active, it draws 0.64 μA (typical). With all peripherals disabled and LVD off, HALT mode achieves 0.23 μA. These values are measured at VDD = 3.0 V and TA = 25°C per the R01DS0282EJ0260 datasheet.
Is R5F1051AASP#70 pin-compatible with other RL78/G11 variants such as R5F1054AASP#70?
No, R5F1051AASP#70 is not pin-compatible with R5F1054AASP#70. The former is a 10-pin LSSOP device with 7 I/O pins, while the latter is a 16-pin SSOP with 13 I/O pins and additional peripherals. Pin counts, layouts, and function mappings differ significantly-PCB redesign is required for substitution.
R5F1051AASP#70 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 10-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G11
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, UART/USART
- Peripherals:
- LVD, POR, WDT
- Number of I/O:
- 4
- 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):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 4x10b; D/A 1x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1051AASP#70 FAQ
1.How can I place an order for R5F1051AASP#70 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1051AASP#70 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 R5F1051AASP#70 reliable?
The price and inventory of R5F1051AASP#70 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1051AASP#70 is usually 5 days.
3.What payment methods are accepted for R5F1051AASP#70?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1051AASP#70 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1051AASP#70?
R5F1051AASP#70 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1051AASP#70 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 R5F1051AASP#70?
For technical support, including R5F1051AASP#70 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1051AASP#70 requirements.
6.How does Aetrix verify that R5F1051AASP#70 is sourced from the original manufacturer or authorized distributors?
All R5F1051AASP#70 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 R5F1051AASP#70 meets industry standards.
7.What is the process for return or replacement of R5F1051AASP#70?
All R5F1051AASP#70 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1051AASP#70, 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 R5F1051AASP#70 part is unused and in its original packaging.
Return procedure for R5F1051AASP#70:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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