R5F52203BDFL - 32MHz 32-bit RX220 MCU, 64KB Flash, LQFP-48 | Renesas
MPN： R5F52203BDFL ✗ 停產R5F52203BDFL 概覽
An entry-level 32-bit MCU (microcontroller unit) integrates a CPU core, on-chip flash program memory, SRAM, and a curated set of peripherals into a single IC. Within the broader hierarchy it sits between 8/16-bit legacy MCUs and high-performance Cortex-M/RX700 parts. The RX220 series in particular is the slimmed-down, low-pin-count derivative of the RX210 family, retaining pin-compatibility and the same RXv1 instruction set while trimming unused peripherals to reduce cost and active current.
Key features include 64 KB (64K x 8) flash, 8 KB SRAM, up to 32 MHz CPU clock, a 12-bit A/D converter, multi-function timer (MTU2), and serial interfaces (SCI, I2C-bus compatible, RSPI). Supply voltage spans 1.8 V to 5.5 V, supporting both 3.3 V and 5 V system rails. The device also integrates watchdog timer, real-time clock, low-voltage detection, and on-chip debugging via a single-wire interface.
Architecturally, the RX220 uses a 3-stage pipelined RXv1 core with hardware MAC (multiply-accumulate) instructions, supporting C-level DSP routines without an extra DSP unit. The 1.8 V internal core regulator and selectable low-power modes (Sleep, Deep Sleep) reduce quiescent current to a few microamps, enabling coin-cell powered designs.
Typical applications include consumer appliances, sensor signal conditioning, battery-driven IoT nodes, low-end motor control, and human-interface boards replacing 8/16-bit MCUs. The wide 1.8-5.5 V supply simplifies migration from 5 V legacy systems. Consider total power budget: at 32 MHz active and 3.3 V, the core draws several mA, so duty-cycling is essential for battery lifetime. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the standalone datasheet.
直接替換替代品，適用於 R5F52203BDFL — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： R5F52203BDFL （相同外形與佔位） — 差異在於 Core Architecture, Program Memory (Flash), Maximum CPU Clock, Operating Temperature, Package.
R5F52205BDFL
✅ 直接替換📋 參考替代品（不在目錄中）
R5F52201BDFL
✅ 直接替換📋 參考替代品（不在目錄中）
R5F52206BDFL
✅ 直接替換📋 參考替代品（不在目錄中）
R5F52203BDFL#V0
✅ 直接替換📋 參考替代品（不在目錄中）
R5F52203BDFL#10
✅ 直接替換📋 參考替代品（不在目錄中）
R5F52203BDFL 最大額定值與電氣特性
| Core Architecture | RXv1 (RX220 family) |
| CPU Bit Width | 32-bit |
| Maximum CPU Clock | 32 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| RAM | 8 KB |
| 封裝 | 48-LFQFP (PLQP0048KB-A, 7x7 mm) |
| 安裝類型 | Surface Mount |
| Operating Voltage (Vcc) | 1.8 V to 5.5 V |
| 工作溫度 | -40C to +85C |
| A/D Converter | 12-bit |
| Serial Interfaces | SCI, I2C (RIIC), RSPI |
| Timers | MTU2 (multi-function timer), watchdog, RTC |
| On-Chip Debug | Single-wire debug interface |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant |
R5F52203BDFL 腳位配置
| 腳位 1 | VREFH — ADC reference voltage high |
| 腳位 2 | VREFL — ADC reference voltage low |
| 腳位 3 | AVCC — Analog supply voltage |
| 腳位 4 | P40/AN000 — Port 4 / ADC input 0 |
| 腳位 5 | P41/AN001 — Port 4 / ADC input 1 |
| 腳位 6 | P42/AN002 — Port 4 / ADC input 2 |
| 腳位 7 | P43/AN003 — Port 4 / ADC input 3 |
| 腳位 8 | P44/AN004 — Port 4 / ADC input 4 |
| 腳位 9 | P45/AN005 — Port 4 / ADC input 5 |
| 腳位 10 | P46/AN006 — Port 4 / ADC input 6 |
| 腳位 11 | P47/AN007 — Port 4 / ADC input 7 |
| 腳位 12 | AVSS — Analog ground |
| 腳位 13 | P50/RTCOUT — Port 5 / RTC output |
| 腳位 14 | P51 — Port 5 |
| 腳位 15 | P52 — Port 5 |
| 腳位 16 | P53 — Port 5 |
| 腳位 17 | P54 — Port 5 |
| 腳位 18 | P55 — Port 5 |
| 腳位 19 | P56 — Port 5 |
| 腳位 20 | P57 — Port 5 |
| 腳位 21 | VSS — Digital ground |
| 腳位 22 | P30/IRQ0 — Port 3 / external interrupt 0 |
| 腳位 23 | P31/IRQ1 — Port 3 / external interrupt 1 |
| 腳位 24 | P32/IRQ2 — Port 3 / external interrupt 2 |
| 腳位 25 | P33/IRQ3 — Port 3 / external interrupt 3 |
| 腳位 26 | P10/MTIOC0B — Port 1 / MTU2 channel 0B |
| 腳位 27 | P11/MTIOC0A — Port 1 / MTU2 channel 0A |
| 腳位 28 | P12/MTIOC0C — Port 1 / MTU2 channel 0C |
| 腳位 29 | P13/MTIOC0D — Port 1 / MTU2 channel 0D |
| 腳位 30 | P14 — Port 1 |
| 腳位 31 | P15 — Port 1 |
| 腳位 32 | P16 — Port 1 |
| 腳位 33 | P17 — Port 1 |
| 腳位 34 | VCC — Digital supply voltage |
| 腳位 35 | P60/SCL — Port 6 / I2C clock |
| 腳位 36 | P61/SDA — Port 6 / I2C data |
| 腳位 37 | P62 — Port 6 |
| 腳位 38 | P63 — Port 6 |
| 腳位 39 | P64 — Port 6 |
| 腳位 40 | P65 — Port 6 |
| 腳位 41 | P66 — Port 6 |
| 腳位 42 | P67 — Port 6 |
| 腳位 43 | RESET# — Reset input (active low) |
| 腳位 44 | MD/FINEC — Mode / fine clock input |
| 腳位 45 | XCIN — Sub-clock crystal input (32.768 kHz) |
| 腳位 46 | XCOUT — Sub-clock crystal output |
| 腳位 47 | XIN — Main clock crystal input |
| 腳位 48 | XOUT — Main clock crystal output |
典型應用
R5F52203BDFL 適用於 6 應用s: Consumer Appliance Control, Battery-Powered IoT Sensor Node, Low-End Motor Control / Fan Drive, Human-Machine Interface (HMI) Boards, 5 V Legacy System Migration, Smart Meter / Utility Endpoint.
Consumer Appliance Control
The R5F52203BDFL's wide 1.8-5.5 V supply lets it sit directly on a 5 V appliance rail without level shifting, and the 12-bit ADC digitizes thermistor and current-sense signals for heating loops. With 32 MHz of CPU, the part handles PID control for washing-machine drums or induction-cooktop timing well within interrupt latency budgets. Placed near the user interface, it reads capacitive-touch pads via the MTU2 input-capture channels and drives LED/PWM indicators. Compared to a discrete 8-bit MCU + op-amp solution, the integrated RXv1 core simplifies firmware, reduces BOM, and shortens time-to-market for white-goods designs.
推薦
Battery-Powered IoT Sensor Node
The R5F52203BDFL is well-matched to battery-powered sensor nodes because its 1.8-5.5 V supply accepts 2x AA cells or a CR2032 with boost, and Deep-Sleep current is in the single-digit uA range per the Renesas RX220 datasheet Rev.1.10. At a 1% duty cycle with the 32 MHz core active for sensor sampling and BLE-friendly UART bursts, average current stays well under 50 uA, enabling multi-year battery life. The 12-bit ADC reads temperature, humidity, and PIR sensor outputs directly without an external analog front end. Its single-wire debug interface simplifies in-field firmware updates via a 2-pin test pad.
推薦
Low-End Motor Control / Fan Drive
The R5F52203BDFL drives small BLDC or brushed-DC fan motors through its MTU2 multi-function timer, which generates complementary PWM with dead-time insertion up to 32 MHz. The 12-bit ADC samples back-EMF or current-sense signals synchronously to the PWM period, allowing sensorless trapezoidal commutation. With 64 KB of flash, the firmware fits sensorless start-up routines, RPM control, and fault handling without resorting to a larger RX231. Versus a discrete timer IC + logic IC approach, the integrated RXv1 core lowers cost and gives access to UART/diagnostic feedback for the host controller.
推薦
Human-Machine Interface (HMI) Boards
The R5F52203BDFL fits HMI daughter boards for entry-level thermostats, water heaters, and small appliances, where it scans keypads, drives 7-segment or 14-segment LCDs, and hosts a UART link to a main controller. The wide 1.8-5.5 V supply rails eliminate a level shifter when interfacing to a 3.3 V master or 5 V LED drivers, and the RXv1 core comfortably runs debounce, charlieplex LED driving, and protocol translation in real time. With 64 KB flash and 8 KB RAM, the device supports moderate menu logic without external memory, keeping PCB footprint at the 7x7 mm LQFP size.
推薦
5 V Legacy System Migration
Engineers migrating 5 V 8051 or H8 designs to a modern 32-bit core choose the R5F52203BDFL because its 1.8-5.5 V supply accepts the legacy 5 V rail directly, eliminating the cost and EMI of a level shifter or LDO. The RXv1 core offers a familiar C-friendly toolchain (GCC, IAR, e2 studio) and a robust interrupt controller that simplifies porting legacy interrupt-driven firmware. Compared to a Cortex-M0 at the same clock, the RX220's hardware MAC instructions accelerate DSP-style signal processing in sensor-conditioning code, and the 48-LFQFP footprint fits existing 7x7 mm land patterns with no PCB rework.
推薦
Smart Meter / Utility Endpoint
The R5F52203BDFL is a fit for utility metering endpoints where low-power RTC operation, tamper detection, and a real UART for AMR (Automatic Meter Reading) modules are required. According to the Renesas RX220 datasheet Rev.1.10, the integrated RTC with sub-clock at 32.768 kHz keeps accurate time-of-use across power events, and the 12-bit ADC digitizes voltage and current sensors for billing-grade metrology. With 64 KB flash, firmware fits DLMS/COSEM stacks on entry-level residential meters, while the wide 1.8-5.5 V supply tolerates long cable runs. Its single-wire debug simplifies field firmware updates without exposing a JTAG port.
推薦
推薦產品摘要
工程參考資料，適用於 R5F52203BDFL — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | R5F52205BDFL | R5F52201BDFL | R5F52206BDFL | R5F52203BDFL#V0 | R5F52203BDFL#10 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 48-LFQFP (7x7 mm) | 48-LFQFP (7x7 mm) - same | 48-LFQFP (7x7 mm) - same | 48-LFQFP (7x7 mm) - same | 48-LFQFP (7x7 mm) - same | 48-LFQFP (7x7 mm) - same |
| CPU Core | RXv1 (32-bit) | RXv1 (32-bit) | RXv1 (32-bit) | RXv1 (32-bit) | RXv1 (32-bit) | RXv1 (32-bit) |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 64 KB | 128 KB | 32 KB | 256 KB | 64 KB | 64 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| AEC-Q100 Automotive Grade | No | No | No | No | Yes | No |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
主要差異化特點
- Wide 1.8-5.5 V single-supply operation (對比R5F52203BDFL#V0)
- Balanced flash/RAM for entry-level designs (對比R5F52201BDFL (32 KB flash))
- Same pinout, scalable flash density (對比R5F52206BDFL (256 KB flash))
設計說明
Decouple VCC and AVCC with a 0.1 uF ceramic capacitor placed within 3 mm of each supply pin, plus a 10 uF bulk capacitor near the package. The wide 1.8-5.5 V supply tolerates both 3.3 V and 5 V rails, but a ferrite bead between digital and analog supplies reduces ADC reference noise. Estimated: at 32 MHz active and 3.3 V Vcc, the core draws roughly 5-7 mA; gate the analog supply when entering Deep Sleep to eliminate AVCC leakage.
At 32 MHz active with all peripherals off and a typical 5 mA core current at 3.3 V, dissipation is roughly 16.5 mW - well within the 48-LFQFP thermal envelope without heatsinking. However, when sourcing high current from port pins (e.g., driving LEDs), total package dissipation can rise to several hundred mW; place copper pours under the exposed pad to spread heat. The MSL-3 rating mandates dry-pack handling and pre-bake before reflow if the bag has been open beyond 168 hours.
Route the 32.768 kHz sub-clock traces (XCIN/XCOUT) as short, symmetric loops with a ground guard ring to avoid coupling noise into the RTC. Keep the main-clock traces (XIN/XOUT) away from switching nodes and place a 4.7 kohm feedback resistor across the crystal. The single-wire debug pin (TOOL0) requires a 4.7 kohm pull-up to VCC for programming mode entry - omitting this prevents debugger connection without rework.
Do not exceed 5.5 V on VCC; even brief transients above 6 V will damage the internal regulator. The MD/FINEC pin must be held low at reset for normal boot mode; leaving it floating can latch the part into serial programming mode. When using the on-chip flash for non-volatile data storage, enable the EWP (Erase-Write Protect) bits to prevent accidental overwrite from runaway pointers. Always check the Renesas RX220 errata document for known silicon revisions before locking the PCB layout.
合規資訊
RoHS and lead-free compliance per Renesas product page. AEC-Q100 qualification available only on R5F52203BDFL#V0 suffix variant. NRND status as of 2026-10-10.
