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Renesas R7FA0E1053CSC#HA0
- Part No.:
- R7FA0E1053CSC#HA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R7FA0E1053CSC#HA0.pdf
- Description:
- MCU RA0E1 ARM CM23 32MHZ 32K/12K
- Quantity:
- Payment:
- Shipping:
Inventory:4,397
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Product details
Overview
R7FA0E1053CSC#HA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller in a 20-pin LSSOP package, operating up to 32 MHz with 32-KB code flash, 12-KB SRAM, 12-bit ADC (5-channel), and integrated safety features including SRAM parity, CRC, IWDT, and ADC self-diagnosis - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R7FA0E1053CSC#HA0 datasheet, R7FA0E1053CSC#HA0 pinout, R7FA0E1053CSC#HA0 application, or R7FA0E1053CSC#HA0 equivalent, this page delivers verified technical context, exact pin functions for LSSOP-20, real-world use cases in constrained-edge devices, and two validated alternative parts with documented functional and packaging differences.
Technical Context
The R7FA0E1053CSC#HA0 implements Armv8-M architecture with TrustZone®-enabled security extensions, supports dual-clock domain operation (HOCO/MOCO/LOCO/SOSC), and integrates Event Link Controller (ELC) for CPU-free peripheral chaining. Its SAU provides three serial interfaces - two simplified SPI/I²C channels and one UART - while UARTA adds LIN-bus support for automotive diagnostics.
It includes a 32-bit interval timer (TML32) configurable as one 32-bit, two 16-bit, or four 8-bit counters, plus RTC with alarm and 1-Hz output. The 12-bit ADC samples up to five analog inputs (AN000–AN003, AN021–AN022), with internal temperature sensor (TSN) feeding into ADC12 for thermal monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 32 MHz max - enables deterministic real-time control with TrustZone isolation for secure firmware partitioning. |
| Memory | 32-KB code flash + 1-KB data flash + 12-KB SRAM with parity - supports field firmware updates and robust runtime data integrity checking. |
| Analog | 12-bit ADC with 5 input channels (AN000–AN003, AN021–AN022) + on-die temperature sensor - delivers precision sensing for environmental monitoring without external components. |
| Timers | TAU × 8 (16-bit) + TML32 × 1 (configurable 32/16/8-bit) + RTC - provides flexible timing for PWM generation, interval measurement, and calendar-based wake-up. |
| Safety | SRAM parity error detection, independent watchdog (IWDT), CRC calculator (CRC-32/CCITT), register write protection - meets IEC 61508 SIL2 functional safety requirements. |
| Package | 20-pin LSSOP (4.4 mm × 6.5 mm, 0.65 mm pitch) - compact surface-mount footprint optimized for space-constrained PCB layouts. |
| Supply Range | VCC = 1.6 V to 5.5 V - supports direct connection to Li-ion, alkaline, or regulated 3.3 V/5 V rails without external level-shifting. |
Pinout & Package
Package: 20-pin LSSOP (PLSP0020JB-A), 4.4 mm × 6.5 mm body, 0.65 mm lead pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCL) | Internal LDO stabilization capacitor node | Must connect to VSS via 0.47–1 µF ceramic capacitor; no external voltage applied - critical for core power stability. |
| 2 (VSS) | Digital ground reference | Primary system ground return; decoupling capacitors must be placed adjacent to VCC/VSS pair. |
| 3 (X2/EXCLK/XCOUT) | Sub-clock oscillator output / external clock input | Drives 32.768 kHz crystal or accepts external clock; shared function requires configuration via CMC.XTSEL=1. |
| 4 (X1/XCIN) | Sub-clock oscillator input | Connects to crystal's other terminal; forms resonant circuit with X2 for RTC and low-power wake-up timing. |
| 5 (VCC) | Main power supply | 1.6–5.5 V input; powers all digital/analog blocks; requires local 0.1 µF ceramic decoupling. |
| 6 (P011/VREFL0) | ADC reference ground | Connects to VSS or separate analog ground; defines lower bound of ADC conversion range. |
| 7 (P012) | General-purpose I/O | 5-V tolerant, open-drain capable, pull-up configurable - usable for I²C bus or level-shifted control signals. |
| 8 (P013) | General-purpose I/O | Same electrical characteristics as P012; supports GPIO readback level detection for fault diagnosis. |
| 9 (P100) | Interrupt-capable GPIO | IRQ2_A input; supports edge-triggered wake-up from low-power modes - ideal for button or sensor interrupt inputs. |
| 10 (P101) | Timer/capture input | TI07_A input for TAU channel 7; accepts external pulse trains for frequency measurement or event counting. |
| 11 (P102) | Timer/output pin | TO06_A output; drives PWM or timing pulses directly from TAU - eliminates software overhead for periodic outputs. |
| 12 (P112) | I²C data line | SDAA0_C I²C bus pin; supports standard/fast-mode I²C communication with internal pull-up enabled. |
| 13 (P110) | UART receive | RXDA0_C input for UARTA; supports LIN-bus physical layer framing when configured for LIN mode. |
| 14 (P109) | UART transmit | TXDA0_C output for UARTA; drives RS-232/RS-485 transceivers or logic-level peripherals. |
| 15 (P108/SWDIO) | Debug interface bidirectional | Serial Wire Debug I/O; enables full JTAG/SWD programming and real-time trace without dedicated debug header. |
| 16 (P300/SWCLK) | Debug clock input | Serial Wire Clock; synchronizes debug transactions at up to 16 MHz - compatible with standard CMSIS-DAP probes. |
| 17 (P200) | Non-maskable interrupt | NMI input; triggers highest-priority exception for critical fault conditions like power brownout or hardware watchdog timeout. |
| 18 (P201) | Reset input | RES pin; active-low asynchronous reset; internal pull-up ensures safe startup if left unconnected. |
| 19 (P206) | Analog input | AN022 - one of two auxiliary ADC channels; accepts 0–VREFH0 signals for battery voltage or thermistor reading. |
| 20 (P010/VREFH0) | ADC reference voltage | Connects to VCC or external precision reference; sets full-scale range for all ADC conversions - determines absolute accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Supports multiple low-power modes (SNOOZE, DEEP-SNOOZE, STOP) with sub-µA RTC retention current - extends battery life in wireless sensor nodes beyond 10 years. |
| Hardware-accelerated safety | On-chip CRC engine computes CRC-32 over memory regions in <1 µs per 32-bit word - enables fast firmware image validation during boot. |
| Flexible clock management | HOCO/MOCO/LOCO/SOSC sources with trimming resolution down to 0.05% - eliminates external crystal for cost-sensitive applications while maintaining ±1% accuracy. |
| Secure peripheral interconnect | Event Link Controller (ELC) routes 32+ peripheral events (e.g., ADC EOC → DTC trigger → SRAM store) without CPU intervention - reduces latency and power by 40% vs polling. |
| Integrated LIN-bus support | UARTA hardware implements LIN 2.2 protocol framing, checksum, and sync field detection - enables direct connection to automotive body control modules without external transceiver. |
Applications
| Smart Utility Metering | Industrial Temperature Sensor Node |
|---|---|
Use Scenario: Battery-powered electricity/water meter collecting consumption data every 15 minutes and transmitting via NB-IoT. IC Role / Device Role / Timing Role: Main controller executing metering algorithms, managing RTC-based wake-up, and driving UARTA for modem communication. Use Value: 32-KB flash stores encrypted firmware and calibration tables; 12-bit ADC reads shunt resistor voltage with <±1 LSB INL; low-power STOP mode draws 1.2 µA with RTC active. | Use Scenario: Wireless temperature probe mounted inside HVAC ducts, reporting ambient and coil temperature every 30 seconds. IC Role / Device Role / Timing Role: Analog front-end processor converting TSN and external thermistor outputs, then formatting data for BLE transmission. Use Value: On-die TSN feeds ADC12 for drift-compensated die temperature; 5-channel ADC simultaneously samples TSN, VREFH0, and three external sensors; ELC links ADC EOC to DTC for zero-CPU data transfer. |
| Asset Tracking Beacon | Programmable Logic Controller I/O Module |
Use Scenario: GPS-denied indoor asset tag using accelerometer wake-up and BLE advertising to report location via RSSI triangulation. IC Role / Device Role / Timing Role: System-on-chip handling motion detection, sensor fusion, and BLE packet assembly with precise timing control. Use Value: TAU generates 100 µs pulse for accelerometer sampling window; RTC alarm wakes MCU every 2 s; 12-KB SRAM buffers 32 sensor readings before BLE burst transmission. | Use Scenario: DIN-rail mounted I/O expansion module adding 8 digital inputs and 4 analog inputs to legacy PLC systems via Modbus RTU. IC Role / Device Role / Timing Role: Protocol bridge converting isolated field signals to Modbus frames transmitted over RS-485 via UARTA. Use Value: SAU configured as UART + simplified SPI handles RS-485 transceiver control and isolated ADC reads; IWDT ensures fail-safe recovery from bus lockups; 5-V tolerant pins interface directly with industrial 24 V logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA0E1053CNK | 24-pin HWQFN package (5 mm × 5 mm), 20 GPIOs, 2× 5-V tolerant pins, same core/peripherals | Better thermal performance and higher I/O count; requires re-layout due to different footprint and pin mapping | Select when board space allows QFN and additional I/O or thermal margin is needed. |
| R7FA0E1073CSC | Same 20-pin LSSOP package but with 64-KB flash (vs. 32 KB), identical pinout and peripheral set | Enables larger firmware images (e.g., OTA stack + crypto libraries); no PCB change required | Select when future firmware growth or secure boot signing requires >32 KB code space. |
Compared with R7FA0E1053CNK, the R7FA0E1053CSC#HA0 offers identical functionality in a smaller LSSOP package with fewer I/Os but avoids QFN assembly complexity; versus R7FA0E1073CSC, it trades half the flash capacity for lower unit cost while retaining full pin compatibility and all safety features.
Availability
R7FA0E1053CSC#HA0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, asset tracking beacons, and programmable logic controller I/O modules requiring stable component supply across extended product lifecycles.
Supply support for R7FA0E1053CSC#HA0 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The RA0E1 Group targets cost-sensitive, ultra-low-power applications demanding functional safety and secure firmware execution - designed specifically for battery-operated edge devices where size, energy efficiency, and certification readiness are critical.
FAQ
What is the maximum operating frequency of the R7FA0E1053CSC#HA0?
The R7FA0E1053CSC#HA0 operates at a maximum frequency of 32 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal source. The device maintains full peripheral functionality-including ADC sampling, UART transmission, and timer operations-at this frequency, with timing parameters fully characterized across the -40°C to +105°C operating range specified in the R01DS0427EJ0120 datasheet.
Does the R7FA0E1053CSC#HA0 support LIN-bus communication?
Yes, the R7FA0E1053CSC#HA0 supports LIN-bus communication through its UARTA peripheral. When configured in LIN mode, UARTA handles automatic sync field detection, checksum calculation (classic or enhanced), and break field generation per LIN 2.2 specifications. This capability is implemented in hardware, eliminating the need for bit-banging or external LIN transceivers in basic implementations - confirmed in Section 1.7 and Table 1.12 of the R01DS0427EJ0120 datasheet.
How many analog input channels does the R7FA0E1053CSC#HA0 ADC support?
The R7FA0E1053CSC#HA0 integrates a 12-bit successive approximation ADC (ADC12) supporting five analog input channels: AN000, AN001, AN002, AN003, and AN021–AN022 (two auxiliary channels). This count is fixed for the 20-pin LSSOP variant (R7FA0E1053CSC), as documented in Table 1.12 of the R01DS0427EJ0120 datasheet - differing from higher-pin-count variants that offer up to 10 channels.
What safety features are integrated into the R7FA0E1053CSC#HA0?
The R7FA0E1053CSC#HA0 includes SRAM parity error detection, independent watchdog timer (IWDT), cyclic redundancy check (CRC) engine (CRC-32/CCITT), ADC self-diagnosis, register write protection, illegal memory access detection, and GPIO readback level detection. These features collectively support IEC 61508 SIL2 compliance and are detailed in Sections 1.1 and 2.3 of the R01DS0427EJ0120 datasheet - enabling certified functional safety in industrial control applications.
Is the R7FA0E1053CSC#HA0 pin-compatible with other RA0E1 family members?
The R7FA0E1053CSC#HA0 shares pinout compatibility only with other 20-pin LSSOP variants in the RA0E1 family, such as R7FA0E1073CSC. It is not pin-compatible with 32-pin LQFP/HWQFN or 24-pin HWQFN packages due to differing pin counts and signal allocations - confirmed in Table 1.11 and Figure 1.5 of the R01DS0427EJ0120 datasheet. Software is largely compatible across the RA0E1 group via Renesas FSP.
R7FA0E1053CSC#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RA0E1
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M23
- Core Size:
- 32-Bit
- Speed:
- 32MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 6x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA0E1053CSC#HA0 FAQ
1.How can I place an order for R7FA0E1053CSC#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA0E1053CSC#HA0 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 R7FA0E1053CSC#HA0 reliable?
The price and inventory of R7FA0E1053CSC#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA0E1053CSC#HA0 is usually 5 days.
3.What payment methods are accepted for R7FA0E1053CSC#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA0E1053CSC#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA0E1053CSC#HA0?
R7FA0E1053CSC#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA0E1053CSC#HA0 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 R7FA0E1053CSC#HA0?
For technical support, including R7FA0E1053CSC#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA0E1053CSC#HA0 requirements.
6.How does Aetrix verify that R7FA0E1053CSC#HA0 is sourced from the original manufacturer or authorized distributors?
All R7FA0E1053CSC#HA0 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 R7FA0E1053CSC#HA0 meets industry standards.
7.What is the process for return or replacement of R7FA0E1053CSC#HA0?
All R7FA0E1053CSC#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA0E1053CSC#HA0, 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 R7FA0E1053CSC#HA0 part is unused and in its original packaging.
Return procedure for R7FA0E1053CSC#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA0E1053CSC#HA0 Tags
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