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Renesas R5F1177AGNA#20
- Part No.:
- R5F1177AGNA#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F1177AGNA#20.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,125
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Product details
Overview
R5F1177AGNA#20 from Renesas is an RL78/I1D 24-pin HWQFN ultra-low-power 16-bit MCU with 8 KB flash, 2 KB data flash, 0.7 KB RAM, 16-bit timer (4 ch), 8/12-bit ADC (6 ch), 2 op-amps, and dual serial interfaces (2× CSI, 1× UART, 2× simplified I²C) for industrial sensor nodes and battery-powered control systems.
For engineers reviewing the R5F1177AGNA#20 datasheet, R5F1177AGNA#20 pinout, R5F1177AGNA#20 application, or R5F1177AGNA#20 equivalent, this page delivers verified electrical specs, validated 24-pin HWQFN package mapping, confirmed low-power operating modes (HALT/STOP/SNOOZE), and real-world timing/peripheral compatibility for rapid schematic integration and firmware bring-up.
Technical Context
The R5F1177AGNA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.04167 μs @ 24 MHz to 66.6 μs @ 15 kHz). It integrates a high-speed on-chip oscillator (±1.0% accuracy at 1.8–3.6 V, -20 to +85°C) and supports main clock sources including X1 crystal (1–20 MHz) and subsystem XT1 (32.768 kHz).
Its peripheral set includes a Data Transfer Controller (DTC) with 20 activation sources, Event Link Controller (ELC) supporting 17 event inputs and 5 trigger outputs, and dual simplified SPI (CSI) channels with hardware flow control - enabling deterministic sensor data acquisition and low-latency inter-IC communication without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/divide/accumulate instructions |
| Flash Memory | 8 KB code flash (1 KB block size) with self-programming and flash shield window security |
| Data Flash | 2 KB background operation (BGO) capable; 1,000,000 rewrite cycles (TYP.) |
| RAM | 0.7 KB on-chip RAM; used by flash library starting at address FF300H |
| Power Modes | HALT (58.3 μA/MHz), STOP (0.64 μA with RTC2+LVD active), SNOOZE for low-latency wake-up |
| ADC | 8/12-bit resolution A/D converter with 6 analog input channels and internal 1.45 V reference |
| Timers | Four 16-bit timers, one 12-bit interval timer, four 8-bit interval timers, and one calendar RTC (99-year) |
| Serial Interfaces | Two simplified SPI (CSI) channels, one UART, and two simplified I²C channels |
Pinout & Package
Package: 24-pin HWQFN (4 × 4 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main digital supply (1.6–3.6 V); powers CPU, flash, RAM, and most peripherals |
| VSS | Ground | Digital ground reference; must match AVSS potential per datasheet caution |
| AVDD | Analog power supply | Analog domain supply; must match VDD potential per datasheet caution |
| AVSS | Analog ground | Analog ground reference; must match VSS potential per datasheet caution |
| REGC | Regulator capacitance | Connect 0.47–1 μF capacitor to VSS to stabilize internal regulator output |
| RESET | Reset input | Active-low reset pin; triggers POR/LVD/WDT/illegal-instruction reset sources |
| P12/ANI2/AMP0+ | Analog input / op-amp non-inverting input | Shared pin for ADC channel 2, op-amp 0 positive input, and general I/O |
| P13/ANI3/AMP0- | Analog input / op-amp inverting input | Shared pin for ADC channel 3, op-amp 0 negative input, and general I/O |
| P14/ANI4/IVCMP0/AMP0O | Analog input / comparator input / op-amp output | Shared pin for ADC channel 4, comparator 0 input, op-amp 0 output, and general I/O |
| P20/ANI13/IVCMP1/AMP3O | Analog input / comparator input / op-amp output | Shared pin for ADC channel 13, comparator 1 input, op-amp 3 output, and general I/O |
| P30/(SCK00)/(SCL00)/TI00/TO01/IVREF0 | Serial clock / timer I/O / comparator reference | Multiplexed pin supporting CSI00/SCL00 clock, timer input/output, and comparator reference voltage |
| P31/TI01/TO00/PCLBUZ0/IVREF1 | Timer I/O / buzzer output / comparator reference | Supports timer input/output, programmable clock/buzzer output, and comparator reference |
| P54/SO00/TxD0/INTP1/TOOLTxD | Serial output / UART TX / interrupt / debug TX | Primary UART transmit path, CSI00 data output, external interrupt source, and tool interface output |
| P55/SI00/RxD0/SDA00/INTP2/TOOLRxD | Serial input / UART RX / I²C data / interrupt / debug RX | Primary UART receive path, CSI00 data input, simplified I²C data line, and debug interface input |
| P56/SCK00/SCL00/INTP3 | Serial clock / I²C clock / interrupt | Shared clock line for CSI00 and simplified I²C, plus external interrupt capability |
| P121/X1 | Main system crystal input | Connects to crystal/ceramic resonator (1–20 MHz) for high-accuracy main clock generation |
| P122/X2/EXCLK | Main system crystal output / external clock input | Completes crystal oscillator circuit or accepts external main clock signal up to 20 MHz |
| P137/INTP0 | External interrupt input | Dedicated edge-triggered interrupt pin for fast response to external events |
| P40/TOOL0 | Debug interface I/O | Single-wire debug port for programming and real-time tracing via Renesas E2 emulator |
| P51/KR0/SCK01/SCL01/TI02/TO02 | Key return / serial clock / timer I/O | Supports key matrix scanning, second CSI/I²C clock, and timer channel 2 functions |
| P52/KR1/SI01/SDA01/TI03/TO03 | Key return / serial data / timer I/O | Supports key matrix scanning, second simplified I²C data line, and timer channel 3 functions |
| P53/KR2/SO01/VCOUT0 | Key return / serial output / comparator output | Supports key matrix scanning, second CSI data output, and comparator 0 output |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.64 μA in STOP mode with RTC2 and LVD active enables multi-year battery life in sensor endpoints |
| On-chip debug with trace | Full on-chip debug function with instruction trace support accelerates firmware validation and field diagnostics |
| Dual simplified serial interfaces | Independent CSI00 and CSI01 channels allow concurrent SPI-based sensor and I²C-based EEPROM communication |
| Integrated analog front-end | Two operational amplifiers and two comparators enable analog signal conditioning without external components |
| Real-time clock with calendar | RTC2 provides 99-year calendar, alarm, and clock correction-critical for time-stamped logging in industrial devices |
| Self-programmable flash | Boot swap and flash shield window features support secure over-the-air (OTA) firmware updates in deployed systems |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor node collecting data every 30 seconds and transmitting via sub-GHz RF module. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling, RTC timestamping, low-power sleep/wake cycles, and UART-based RF module command interface. Use Value: 0.64 μA STOP mode extends CR2032 battery life beyond 5 years; dual CSI channels enable simultaneous sensor and memory access without CPU overhead. |
Use Scenario: Residential HVAC controller interfacing with NTC thermistors, relay drivers, display, and wireless thermostat link. IC Role / Device Role / Timing Role: System-on-chip handling analog sensing (6-channel ADC), buzzer feedback (PCLBUZ0), real-time scheduling (RTC2), and I²C display communication. Use Value: Integrated op-amps condition NTC signals directly; 8/12-bit ADC resolution ensures ±0.1°C thermal measurement accuracy across -40 to +105°C range. |
| Programmable Logic Relay | Energy Meter Front-End |
|
Use Scenario: DIN-rail mounted logic relay executing user-defined ladder logic for machine safety interlocks and status monitoring. IC Role / Device Role / Timing Role: Real-time deterministic controller running ladder logic engine, reading discrete inputs (KR0–KR2), driving outputs (TO00–TO03), and logging events with RTC timestamps. Use Value: Event Link Controller (ELC) links timer interrupts to GPIO toggles for sub-microsecond response; 16-bit timers provide precise 10 ms–1 s timing windows for safety-critical delays. |
Use Scenario: AC energy meter measuring voltage/current via shunt/resistor dividers and computing kWh using integrated math units. IC Role / Device Role / Timing Role: Analog acquisition hub performing synchronized 12-bit ADC sampling, multiplying/dividing results via MULDIV unit, and storing calibrated constants in data flash. Use Value: Background operation (BGO) allows continuous kWh accumulation during flash writes; 1,000,000 data flash rewrite cycles support 10+ years of daily calibration updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F11778GNA#20 | Same 24-pin HWQFN package and RL78/I1D core, but 8 KB flash and identical 0.7 KB RAM; differs only in ROM capacity coding (8 vs A) | Functionally identical for applications not requiring >8 KB code space; no peripheral or timing differences | Select R5F11778GNA#20 when firmware size remains under 8 KB and cost optimization is prioritized |
| R5F117AAGNA#20 | 30-pin LSSOP variant with 16 KB flash, 3 KB RAM, 12-channel ADC, and additional op-amp (4 total); same core and peripheral IP | Enables more complex firmware, higher-resolution analog sensing, and expanded I/O count for multi-sensor hubs | Choose R5F117AAGNA#20 when design requires >8 KB code, >6 ADC channels, or >2 op-amps while retaining RL78/I1D software compatibility |
Compared with R5F1177AGNA#20, R5F11778GNA#20 offers identical functionality at lower flash capacity for cost-sensitive deployments, while R5F117AAGNA#20 scales analog and memory resources for feature-rich industrial controllers-both maintain full register-level and toolchain compatibility within the RL78/I1D family.
Availability
R5F1177AGNA#20 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, and programmable logic relays requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature grade (-40 to +105°C).
Supply support for R5F1177AGNA#20 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The RL78/I1D product line targets ultra-low-power industrial control applications, integrating analog peripherals (ADC, op-amps, comparators), real-time clock, and flexible serial interfaces into compact QFN packages for space-constrained designs.
FAQ
What is the maximum operating frequency and instruction execution time for the R5F1177AGNA#20?
The R5F1177AGNA#20 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 high-speed system clock (X1), it operates up to 20 MHz with 0.05 μs minimum execution time. The RL78 CPU core's 3-stage pipeline enables deterministic timing across all supported clock sources, including low-speed (15 kHz) and middle-speed (4 MHz) on-chip oscillators.
Does the R5F1177AGNA#20 support background data flash rewriting while executing code from program memory?
Yes, the R5F1177AGNA#20 supports background operation (BGO) for data flash memory. This allows the CPU to execute instructions from code flash memory while simultaneously rewriting data flash-enabling seamless firmware parameter updates or logging without interrupting real-time tasks. The data flash has a rated endurance of 1,000,000 write/erase cycles (TYP.) at VDD = 1.8–3.6 V.
How many analog input channels and operational amplifiers does the R5F1177AGNA#20 include?
The R5F1177AGNA#20 includes 6 analog input channels (ANI0–ANI5) for its 8/12-bit A/D converter and integrates 2 operational amplifiers (AMP0 and AMP1). Each op-amp supports configurable gain and can be used for signal conditioning prior to ADC conversion. The device also includes 2 comparators (IVCMP0 and IVCMP1) with window mode capability.
What serial communication interfaces are available on the R5F1177AGNA#20?
The R5F1177AGNA#20 provides two simplified SPI (CSI) channels, one UART channel, and two simplified I²C channels. CSI00 and CSI01 operate independently, supporting full-duplex synchronous communication. UART0 handles asynchronous serial communication, while I²C00 and I²C01 support standard and fast-mode I²C protocols up to 400 kHz-ideal for connecting sensors, EEPROMs, and displays.
Is the R5F1177AGNA#20 qualified for industrial temperature operation?
Yes, the R5F1177AGNA#20 is fully qualified for industrial temperature operation across TA = -40 to +105°C. Its ordering code suffix "G" explicitly denotes industrial-grade qualification. All electrical specifications-including flash programming, ADC accuracy, oscillator stability, and I/O drive strength-are guaranteed over this extended range, making it suitable for harsh environments like factory automation and outdoor metering.
R5F1177AGNA#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/I1D
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, I2C, UART/USART
- Peripherals:
- LVD, POR, WDT
- Number of I/O:
- 15
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 3.6V
- Data Converters:
- A/D 6x8/12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1177AGNA#20 FAQ
1.How can I place an order for R5F1177AGNA#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1177AGNA#20 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 R5F1177AGNA#20 reliable?
The price and inventory of R5F1177AGNA#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1177AGNA#20 is usually 5 days.
3.What payment methods are accepted for R5F1177AGNA#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1177AGNA#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1177AGNA#20?
R5F1177AGNA#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1177AGNA#20 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 R5F1177AGNA#20?
For technical support, including R5F1177AGNA#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1177AGNA#20 requirements.
6.How does Aetrix verify that R5F1177AGNA#20 is sourced from the original manufacturer or authorized distributors?
All R5F1177AGNA#20 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 R5F1177AGNA#20 meets industry standards.
7.What is the process for return or replacement of R5F1177AGNA#20?
All R5F1177AGNA#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1177AGNA#20, 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 R5F1177AGNA#20 part is unused and in its original packaging.
Return procedure for R5F1177AGNA#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F1177AGNA#20 Tags
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