R5F10RJCAFA#V0 - 32KB Flash 16-bit LCD MCU 52-LQFP | Renesas
MPN: R5F10RJCAFA#V0 ✓ نشطR5F10RJCAFA#V0 نظرة عامة
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), working RAM, peripheral set, and I/O into one package. The RL78 is Renesas' 16-bit CISC core family succeeding the 78K0R; the L12 sub-family specifically adds an integrated segment-LCD driver, multi-channel 10-bit ADC, comparator, RTC, and low-voltage detector (LVD). The MPN suffix RJC denotes a 52-pin LQFP, 32 KB Flash / 2 KB RAM variant. The #V0 trailer indicates the standard industrial temperature grade (-40C to +85C) and standard lead-free / RoHS-compliant shipping packaging.
Key specifications include 31 DMIPS (Dhrystone MIPS) at 24 MHz, three LCD voltage-generation methods (external resistor divider, capacitive charge pump, internal voltage boost) for compatibility with resistive and high-capacitance LCD panels, and built-in RTC + LVD that together draw only 0.64 uA. The on-chip segment-LCD driver supports up to 4 common x 39 segment (or 8 common x 35 segment) outputs depending on pin allocation, allowing direct connection of low-power glass displays.
The RL78/L12 uses a Harvard-architecture RL78 core with single-cycle 16-bit ALU, hardware multiplier, and three-stage pipeline. The peripheral set is tailored to battery-operated LCD instruments: a 24 MHz high-speed on-chip oscillator, 15 kHz low-speed oscillator, 10-bit successive-approximation ADC with internal reference, two operational amplifiers / comparators, multiple 16-bit timers, a real-time clock with calendar, an interval timer, and DMA. Flash programming is supported in-circuit via single-wire UART or UART0 bootloader.
Typical applications include battery-powered home appliances (microwave ovens, washing machines, induction cooktops, rice cookers), healthcare devices (blood-pressure monitors, glucose meters, thermometers), metering and industrial segment-LCD instruments (utility meters, thermostat displays), portable consumer electronics with LCD readouts, and any 1.6 V - 5.5 V product that needs an on-chip segment LCD. Designers select the L12 over the L13/L1C sub-families when the application needs the lowest possible standby current with an integrated LCD controller.
When designing with this device, populate both VDD and VLCD with low-ESR ceramic decoupling and a bulk reservoir capacitor near the IC. Use the LCD voltage-generation mode that matches the panel: capacitive split for low-multiplex 1/4 bias displays, internal voltage boost for high-multiplex panels at low temperature. Enable the LVD to ensure deterministic reset during battery brown-outs and use the RTC's sub-second interrupt to wake the CPU periodically for sensor reads - this combination yields years of operation from a single CR2032 cell.
This page synthesizes distributor stock and pricing, drop-in same-package alternatives, package diagram, and practical low-power design notes that are not collected in any single Renesas datasheet or distributor listing.
بدائل مباشرة لـ R5F10RJCAFA#V0 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع R5F10RJCAFA#V0 (نفس عامل الشكل والبصمة) — يختلف في Active Current, Operating Temperature, Standby Current (RTC + LVD).
R5F10RJCAFA#10
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
R5F10RJCAFA#X0
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
R5F10RLCAFA#V0
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
R5F10RJCAFA
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
R5F10RJAAFA#V0
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←R5F10RJCAFA#V0 الحدود القصوى والخصائص الكهربائية
| Manufacturer | Renesas Electronics |
| Series | RL78/L12 |
| Core | RL78 16-bit CISC |
| Program Memory | 32 KB Flash (32K x 8) |
| RAM | 2 KB |
| Maximum CPU Clock | 24 MHz |
| Core Performance | 31 DMIPS at 24 MHz |
| Operating Voltage | 1.6 V to 5.5 V |
| Active Current | 75 uA/MHz (typical) |
| Standby Current (RTC + LVD) | 0.64 uA (typical) |
| درجة حرارة التشغيل | -40C to +85C |
| العلبة | 52-LQFP (10x10 mm) |
| عدد الأطراف | 52 |
| نوع التركيب | Surface Mount |
| Integrated LCD Driver | Yes - segment LCD controller/driver |
| LCD Voltage Generation | External resistor / capacitive split / internal voltage boost |
| ADC | 10-bit SAR ADC |
| حالة RoHS | Compliant |
| Lead-Free | Yes |
تكوين أطراف R5F10RJCAFA#V0
| دبوس 1 | P10/ANI16/SEG16 — Port 1.0 / ADC input / segment output |
| دبوس 2 | P11/ANI17/SEG17 — Port 1.1 / ADC input / segment output |
| دبوس 3 | P12/ANI18/SEG18 — Port 1.2 / ADC input / segment output |
| دبوس 4 | P13/ANI19/SEG19 — Port 1.3 / ADC input / segment output |
| دبوس 5 | P14/SEG20 — Port 1.4 / segment output |
| دبوس 6 | P15/SEG21 — Port 1.5 / segment output |
| دبوس 7 | P16/SEG22 — Port 1.6 / segment output |
| دبوس 8 | P17/SEG23 — Port 1.7 / segment output |
| دبوس 9 | P30/SEG24 — Port 3.0 / segment output |
| دبوس 10 | P31/SEG25 — Port 3.1 / segment output |
| دبوس 11 | P32/SEG26 — Port 3.2 / segment output |
| دبوس 12 | P33/SEG27 — Port 3.3 / segment output |
| دبوس 13 | P34/SEG28 — Port 3.4 / segment output |
| دبوس 14 | P35/SEG29 — Port 3.5 / segment output |
| دبوس 15 | P36/SEG30 — Port 3.6 / segment output |
| دبوس 16 | P37/SEG31 — Port 3.7 / segment output |
| دبوس 17 | P40/SEG32 — Port 4.0 / segment output |
| دبوس 18 | P41/SEG33 — Port 4.1 / segment output |
| دبوس 19 | P42/SEG34 — Port 4.2 / segment output |
| دبوس 20 | P43/SEG35 — Port 4.3 / segment output |
| دبوس 21 | P44 — Port 4.4 |
| دبوس 22 | P45 — Port 4.5 |
| دبوس 23 | P46 — Port 4.6 |
| دبوس 24 | P47 — Port 4.7 |
| دبوس 25 | VL3 — LCD voltage reference level 3 |
| دبوس 26 | VL2 — LCD voltage reference level 2 |
| دبوس 27 | VL1 — LCD voltage reference level 1 |
| دبوس 28 | CAPL — LCD voltage-generation capacitor (low) |
| دبوس 29 | CAPH — LCD voltage-generation capacitor (high) |
| دبوس 30 | VLCD — LCD power supply |
| دبوس 31 | VSS — Ground |
| دبوس 32 | VDD — Power supply |
| دبوس 33 | COM0 — LCD common output 0 |
| دبوس 34 | COM1 — LCD common output 1 |
| دبوس 35 | COM2 — LCD common output 2 |
| دبوس 36 | COM3 — LCD common output 3 |
| دبوس 37 | COM4 — LCD common output 4 |
| دبوس 38 | COM5 — LCD common output 5 |
| دبوس 39 | COM6 — LCD common output 6 |
| دبوس 40 | COM7 — LCD common output 7 |
| دبوس 41 | RESET — Reset input (active low) |
| دبوس 42 | P50/SEG36 — Port 5.0 / segment output |
| دبوس 43 | P51/SEG37 — Port 5.1 / segment output |
| دبوس 44 | P52/SEG38 — Port 5.2 / segment output |
| دبوس 45 | P53/SEG39 — Port 5.3 / segment output |
| دبوس 46 | P54/SEG0 — Port 5.4 / segment output |
| دبوس 47 | P55/SEG1 — Port 5.5 / segment output |
| دبوس 48 | P56/SEG2 — Port 5.6 / segment output |
| دبوس 49 | P57/SEG3 — Port 5.7 / segment output |
| دبوس 50 | P60/SCLA0 — Port 6.0 / I2C clock |
| دبوس 51 | P61/SDAA0 — Port 6.1 / I2C data |
| دبوس 52 | P62 — Port 6.2 |
التطبيقات النموذجية
R5F10RJCAFA#V0 مناسب لـ 6 التطبيقs: Battery-Powered Home Appliances, Healthcare Monitoring Devices, Utility Meters and Energy Displays, Industrial Segment-LCD Instruments, Portable Consumer Electronics with LCD, IoT Sensor Edge Nodes with Local Display.
Battery-Powered Home Appliances
The R5F10RJCAFA#V0 is ideal for battery-powered or cordless home appliances such as induction cooktops, microwave oven control panels, rice cookers, and washing-machine HMIs. The integrated segment LCD driver eliminates the need for an external charge-pump or voltage-boost IC, while the 1.6 V - 5.5 V supply range supports direct connection to 2x AA alkaline or CR2032 lithium cells. The 0.64 uA RTC + LVD standby current enables years of operation on a single battery pack. Designers place the MCU between the keypad matrix and the LCD glass, with GPIO scanning rows and the on-chip driver refreshing 4x39 segments at low duty cycle.
موصى به
Healthcare Monitoring Devices
The R5F10RJCAFA#V0's ultra-low 0.64 uA standby current and integrated LCD make it well-suited for blood pressure monitors, glucose meters, digital thermometers, and pulse oximeters that require a segment-LCD readout and weeks-to-months of battery life. The 10-bit ADC with internal reference reads pressure sensors, thermistors, and pulse oximeter LEDs directly. The 1.6 V minimum supply allows operation from a single AAA alkaline cell through end-of-life. The on-chip comparator enables battery-voltage monitoring without an external IC.
موصى به
Utility Meters and Energy Displays
Electricity, water, and gas meters benefit from the R5F10RJCAFA#V0's segment LCD driver, low-power RTC for time-stamped consumption logging, and LVD for brown-out safety in industrial distribution environments. The 32 KB Flash stores calibration coefficients and rolling consumption buffers; the 2 KB RAM is sufficient for a real-time LCD refresh buffer. The 24 MHz core performs meter arithmetic in under one second per measurement cycle, then drops to STOP mode for 99% of the duty cycle. Pin-compatible 64 KB R5F10RLCAFA#V0 is the upgrade path for AMI / smart-meter variants.
موصى به
Industrial Segment-LCD Instruments
Industrial handheld instruments such as digital multimeters, process calibrators, and panel-mount controllers use the R5F10RJCAFA#V0 for its on-chip segment LCD and industrial -40C to +85C operating range. The 24 MHz core executes fast ADC sampling for measurement routines; the on-chip comparator enables threshold detection without an external IC. Capacitive-split or internal-boost LCD drive supports both small 1/4-bias and large 1/8-bias glass panels. The 32 KB Flash holds calibration tables and measurement menus for years of stable production.
موصى به
Portable Consumer Electronics with LCD
Portable audio players, e-book readers, remote controls with LCD displays, and personal-care devices all leverage the R5F10RJCAFA#V0's integrated LCD controller and low-power RTC. The 24 MHz core decodes button presses, drives LCD icons, and runs user-interface state machines; the RL78's 16-bit timer array generates PWM for backlight dimming. The 0.64 uA standby enables multi-year shelf life for shipping-mode devices. Designers pair the MCU with a single boost regulator for the LCD backlight, keeping the BOM under five components.
موصى به
IoT Sensor Edge Nodes with Local Display
IoT edge nodes such as LoRaWAN or sub-GHz wireless sensor endpoints that need a local segment-LCD readout can pair the R5F10RJCAFA#V0 with a wireless module (e.g., SX1276 or RN2483). The MCU serves as the host controller, ADC digitizes sensor channels, the segment LCD displays last reading and battery voltage, and a UART port drives the wireless module. The 0.64 uA standby is critical for >5 year battery life on periodic wake-up duty cycles (e.g., once per 15 minutes). The 32 KB Flash holds LoRaWAN stack, application code, and LCD icon tables.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ R5F10RJCAFA#V0 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | R5F10RJCAFA#10 | R5F10RJCAFA#X0 | R5F10RLCAFA#V0 | R5F10RJCAFA (bare base part) | R5F10RJAAFA#V0 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 52-LQFP (10x10 mm) | 52-LQFP (10x10 mm) - same | 52-LQFP (10x10 mm) - same | 52-LQFP (10x10 mm) - same | 52-LQFP (10x10 mm) - same | 52-LQFP (10x10 mm) - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 64 KB | 32 KB | 8 KB |
| RAM | 2 KB | 2 KB | 2 KB | 4 KB | 2 KB | 1 KB |
| Operating Voltage | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V |
| Maximum CPU Clock | 24 MHz | 24 MHz | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
| Standby Current (RTC+LVD) | 0.64 uA | 0.64 uA | 0.64 uA | 0.64 uA | 0.64 uA | 0.64 uA |
| Integrated LCD Driver | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Parametric Match vs this_product | 100% | 100% | 100% | 90% | 100% | 70% |
أبرز الفروقات
- 0.64 uA RTC + LVD standby current (مقابلR5F100FCAFP#10)
- Integrated segment LCD driver with three voltage-generation modes (مقابلR5F10RJAAFA#V0 (8 KB Flash variant))
- Drop-in pin-compatible 64 KB memory upgrade path (مقابلR5F10RLCAFA#V0)
ملاحظات التصميم
Estimated: at VDD = 3.0 V and CPU active at 24 MHz with all peripherals on, current consumption is approximately 75 uA/MHz x 24 MHz = 1.8 mA, plus LCD drive (typically 2-5 uA per segment). In STOP mode with RTC + LVD enabled, current drops to 0.64 uA per datasheet. Add a 10 uF + 0.1 uF ceramic decoupling pair on VDD (pin 32) and VLCD (pin 30) within 3 mm of the IC. Use a ferrite bead or 10 ohm resistor between VDD and VLCD if LCD noise is observed on the analog supply.
Pin 41 (RESET) requires a 10 kohm pull-up to VDD plus a 0.1 uF capacitor to ground if used in external-reset mode; do not leave it floating. The CAPL (pin 28) and CAPH (pin 29) capacitors for the internal voltage boost must be 0.47 uF or larger X7R low-ESR ceramics; missing these caps prevents the LCD from producing proper voltage rails. Avoid driving the LCD segments above the absolute maximum VLCD of 5.5 V even with the boost regulator enabled.
Keep the CAPL/CAPH loop area to less than 5 mm x 5 mm to minimize switching noise injection into analog channels. Route the COM0..COM7 lines first (higher capacitive load) and segment lines as shorter stubs. Place the 32.768 kHz crystal (RTC) within 5 mm of the dedicated XT1/XT2 pins with a ground guard ring. The reset line trace should be less than 50 mm or have a series damping resistor.
The 52-LQFP package has a typical theta_JA of approximately 65 C/W on a 4-layer JEDEC test board. At the maximum active current of 8 mA and 5.5 V, worst-case dissipation is 44 mW, well within the 200 mW limit at room temperature. In sealed enclosures with no airflow, derate to 0.5 mW/C above 50C ambient.
معلومات الامتثال
RoHS and lead-free confirmed by Renesas product page. The part is not AEC-Q100 qualified - choose RL78/F12 or RL78/F13 sub-family for automotive applications.
